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Quantum FIREBALL PLUS AS 10.2 Product Manual

Summary of FIREBALL PLUS AS 10.2

  • Page 1

    Quantum fireball plus as quantum fireball plus as quantum fireball plus as quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 10.2/20.5/30.0/40.0/60.0 gb at 10.2/20.5/30.0/40.0/60.0 gb at 10.2/20.5/30.0/40.0/60.0 gb at product manual product manual product manual product manual december 12, 200...

  • Page 2

    Quantum reserves the right to make changes and improvements to its products, without incurring any obligation to incorporate such changes or improvements into units previously sold or shipped. You can request quantum publications from your quantum sales representative or order them directly from qua...

  • Page 3

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at iii table of contents table of contents table of contents table of contents chapter 1 about this manual 1.1 audience ................................................................................................................. 1-1 1.2 manua...

  • Page 4

    Table of contents iv quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3.9.2 the 8.4-gigabytes barrier ................................................................................. 3-16 3.9.3 operating system limitations ........................................................................

  • Page 5

    Table of contents quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at v chapter 6 ata bus interface and ata commands 6-1 6.1 introduction ....................................................................................................... 6-1 6.2 software interface...............................

  • Page 6

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at vi list of figures list of figures list of figures list of figures figure 3-1 mechanical dimensions of quantum fireball plus as hard disk drive ......3-1 figure 3-2 drive packing assembly ...........................................................

  • Page 7

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at vii list of tables list of tables list of tables list of tables table 3-1 at jumper options................................................................................................. 3-5 table 3-2 j1 power connector, section a...............

  • Page 8

    Table of contents viii quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at table 6-28 defect list data format.......................................................................... 6-74 table 6-29 defect entry data format...................................................................... 6...

  • Page 9

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 1-1 chapter 1 chapter 1 chapter 1 chapter 1 about this manual about this manual about this manual about this manual this chapter gives an overview of the contents of this manual, including the intended audience, how the manual is organized, ter...

  • Page 10

    About this manual 1-2 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at • ecc error correcting code • fci flux changes per inch • hz hertz • kb kilobytes • lsb least significant bit • ma milliamperes • mb megabytes (1 mb = 1,000,000 bytes when referring to disk storage and 1,048,576 bytes in a...

  • Page 11

    About this manual quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 1-3 naming conventions: • host: in general, the system in which the drive resides is referred to as the host. • computer voice: this refers to items you type at the computer keyboard. These items are listed in 10-point, all ca...

  • Page 12

    About this manual 1-4 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at.

  • Page 13

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 2-5 chapter 2 chapter 2 chapter 2 chapter 2 general description general description general description general description this chapter summarizes the general functions and key features of the quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 ...

  • Page 14

    General description 2-6 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at performance • average seek time of 8.5 ms • average rotational latency of 4.17 ms • new ultra ata interface with quantum-patented ultra ata/100 protocol supporting burst data transfer rates of 100 mb/s. • 2 mb buffer wit...

  • Page 15

    General description quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 2-7 2.7 2.7 2.7 2.7 regulatory compliance standards regulatory compliance standards regulatory compliance standards regulatory compliance standards quantum corporation’s disk drive products meet all domestic and internationa...

  • Page 16

    General description 2-8 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at.

  • Page 17

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3-1 chapter 3 chapter 3 chapter 3 chapter 3 installation installation installation installation this chapter explains how to unpack, configure, mount, and connect the quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at hard disk drive prior...

  • Page 18

    Installation 3-2 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3.2 3.2 3.2 3.2 unpacking instructions unpacking instructions unpacking instructions unpacking instructions 1. Open the shipping container and remove the packing assembly that contains the drive. 2. Remove the drive from the pa...

  • Page 19

    Installation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3-3 figure 3-3 figure 3-3 figure 3-3 figure 3-3 drive packing assembly of a polypropylene 20-pack container note: the 20-pack container should be shipped in the same way it was received from quantum. When individual drives are ship...

  • Page 20

    Installation 3-4 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3.3 3.3 3.3 3.3 hardware options hardware options hardware options hardware options the configuration of a quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at hard disk drive depends on the host system in which it is to be ...

  • Page 21

    Installation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3-5 the configuration of the following three jumpers controls the drive’s five modes of operation: • cs – cable select • ds – drive select • pk– jumper parking position (slave mode) • ac– alternate capacity the at pcb has two jumpe...

  • Page 22

    Installation 3-6 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at drive is configured as a master. If it is a 1 (high), the drive is configured as a slave. In order to configure two drives in a master/slave relationship using the cs jumper, you need to use a cable that provides the proper sig...

  • Page 23

    Installation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3-7 3.3.5 3.3.5 3.3.5 3.3.5 alternate capacity (ac) alternate capacity (ac) alternate capacity (ac) alternate capacity (ac) for user capacities below 66,055,248 sectors (32 gb), inserting the ac jumper limits the number of cylinder...

  • Page 24

    Installation 3-8 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3.4 3.4 3.4 3.4 ata bus adapter ata bus adapter ata bus adapter ata bus adapter there are two ways you can configure a system to allow the quantum fireball plus as hard disk drives to communicate over the ata bus of an ibm or i...

  • Page 25

    Installation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3-9 3.5 3.5 3.5 3.5 mounting mounting mounting mounting drive mounting orientation, clearance, and ventilation requirements are described in the following subsections. 3.5.1 3.5.1 3.5.1 3.5.1 orientation orientation orientation ori...

  • Page 26

    Installation 3-10 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at figure 3-8 figure 3-8 figure 3-8 figure 3-8 mounting screw clearance for the quantum fireball plus as hard disk drives caution: caution: caution: caution: the pcb is very close to the mounting holes. Do not ex- ceed the specif...

  • Page 27

    Installation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3-11 3.5.2 3.5.2 3.5.2 3.5.2 clearance clearance clearance clearance clearance from the drive to any other surface (except mounting surfaces) must be a minimum of 1.25 mm (0.05 inches). 3.5.3 3.5.3 3.5.3 3.5.3 ventilation ventilati...

  • Page 28

    Installation 3-12 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3.6.1 3.6.1 3.6.1 3.6.1 dc power (j1, section a) dc power (j1, section a) dc power (j1, section a) dc power (j1, section a) the recommended mating connectors for the +5 vdc and +12 vdc input power are listed in table 3-2. Tabl...

  • Page 29

    Installation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3-13 3.7 3.7 3.7 3.7 for systems with a motherboard ata adapter for systems with a motherboard ata adapter for systems with a motherboard ata adapter for systems with a motherboard ata adapter you can install the quantum fireball p...

  • Page 30

    Installation 3-14 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3.8.1.1 3.8.1.1 3.8.1.1 3.8.1.1 connecting the adapter board and the drive connecting the adapter board and the drive connecting the adapter board and the drive connecting the adapter board and the drive use a 40-pin ribbon ca...

  • Page 31

    Installation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3-15 figure 3-11 figure 3-11 figure 3-11 figure 3-11 completing the drive installation 3.9 3.9 3.9 3.9 techniques in drive configuration techniques in drive configuration techniques in drive configuration techniques in drive config...

  • Page 32

    Installation 3-16 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at • use a hard disk controller that translates the hard drive parameters to an appropriate setup for both ms-dos and the computer system’s rom-bios. • insert the alternate capacity (ac) jumper on the drive (see section 3.3.5). 3...

  • Page 33

    Installation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 3-17 3.10 3.10 3.10 3.10 system startup and operation system startup and operation system startup and operation system startup and operation once you have installed the quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at hard d...

  • Page 34

    Installation 3-18 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at to match the logical specifications of the drive to the drive type of a particular bios, consult the system’s drive-type table. This table specifies the number of cylinders, heads, and sectors for a particular drive type. You ...

  • Page 35

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4-1 chapter 4 chapter 4 chapter 4 chapter 4 specifications specifications specifications specifications this chapter gives a detailed description of the physical, electrical, and environmental characteristics of the quantum fireball plus as har...

  • Page 36

    Specifications 4-2 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 1. Disk to read buffer transfer rate is zone-dependent, instantaneous 2. Refer to section 4.14, “disk errors” for details on error rate definitions. 3. Css specifications assumes a duty cycle of one power off operation for ev...

  • Page 37

    Specifications quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4-3 4.2 4.2 4.2 4.2 formatted capacity formatted capacity formatted capacity formatted capacity at the factory, the quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at hard disk drives receive a low-level format that creates ...

  • Page 38

    Specifications 4-4 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4.4 4.4 4.4 4.4 timing specifications timing specifications timing specifications timing specifications table 4-3 illustrates the timing specifications of the quantum fireball plus as hard disk drives. Table 4-3 table 4-3 tab...

  • Page 39

    Specifications quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4-5 4.5 4.5 4.5 4.5 power power power power the quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at hard disk drives operate from two supply voltages: • +12v ±10% • +5v ±5% the allowable ripple and noise is 250 mv peak-to-pea...

  • Page 40

    Specifications 4-6 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4.5.3 4.5.3 4.5.3 4.5.3 power requirements power requirements power requirements power requirements table 4-5 lists the voltages and typical average corresponding currents for the various modes of operation of the quantum fir...

  • Page 41

    Specifications quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4-7 3. Idle mode is in effect when the drive is not reading, writing, seeking, or executing any commands. A portion of the r/w circuitry is powered down, the motor is up to speed and the drive ready condition exists. 4. Maximum s...

  • Page 42

    Specifications 4-8 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4.7 4.7 4.7 4.7 mechanical mechanical mechanical mechanical quantum fireball plus as hard disk drives are designed to meet the form factor dimensions of the sff committee specification sff8300. Height: 26.1 mm maximum width: ...

  • Page 43

    Specifications quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4-9 4.9 4.9 4.9 4.9 shock and vibration shock and vibration shock and vibration shock and vibration the quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at hard disk drives can withstand levels of shock and vibration applied ...

  • Page 44

    Specifications 4-10 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4.10 4.10 4.10 4.10 handling the drive handling the drive handling the drive handling the drive before handling the quantum hard disk drive some precautions must to be taken to ensure that the drive is not damaged. Use both ...

  • Page 45

    Specifications quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 4-11 4.12 4.12 4.12 4.12 electromagnetic susceptibility electromagnetic susceptibility electromagnetic susceptibility electromagnetic susceptibility e field: 3volts/meter at b field: as per standard en61004-8 4.13 4.13 4.13 4.13 ...

  • Page 46

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5-1 chapter 5 chapter 5 chapter 5 chapter 5 basic principles of operation basic principles of operation basic principles of operation basic principles of operation this chapter describes the operation of quantum fireball plus as at hard disk dr...

  • Page 47

    Basic principles of operation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5-2 figure 5-1 figure 5-1 figure 5-1 figure 5-1 quantum fireball plus as at hard disk drive exploded view.

  • Page 48

    Basic principles of operation 5-3 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5.1.1 5.1.1 5.1.1 5.1.1 base casting assembly base casting assembly base casting assembly base casting assembly a single-piece, e-coated, aluminum-alloy base casting provides a mounting surface for the drive me...

  • Page 49

    Basic principles of operation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5-4 5.1.4 5.1.4 5.1.4 5.1.4 headstack assembly headstack assembly headstack assembly headstack assembly the headstack assembly consists of read/write heads, head arms, and a coil joined together by insertion moldin...

  • Page 50

    Basic principles of operation 5-5 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5.1.7 5.1.7 5.1.7 5.1.7 air filtration air filtration air filtration air filtration the quantum fireball plus as at hard disk drives are winchester-type drives. The heads fly very close to the media surface. Th...

  • Page 51

    Basic principles of operation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5-6 5.2.1 5.2.1 5.2.1 5.2.1 integrated µprocessor, disk controller and ata interface integrated µprocessor, disk controller and ata interface integrated µprocessor, disk controller and ata interface integrated µpro...

  • Page 52

    Basic principles of operation 5-7 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at the integrated µprocessor, disk controller, and ata interface electronics have nine functional modules (described below): • µprocessor • digital synchronous spoke (dss) • error correction code (ecc) control • f...

  • Page 53

    Basic principles of operation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5-8 5.2.1.5 5.2.1.5 5.2.1.5 5.2.1.5 buffer controller buffer controller buffer controller buffer controller the buffer controller supports a 2 mb buffer, which is organized as 1m x 16 bits. The 16-bit width impleme...

  • Page 54

    Basic principles of operation 5-9 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at • clock synthesizer • pll • serial interface • ta detection and correction 5.2.2.1 5.2.2.1 5.2.2.1 5.2.2.1 pre-compensator pre-compensator pre-compensator pre-compensator the pre-compensator introduces pre-comp...

  • Page 55

    Basic principles of operation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5-10 5.2.3 5.2.3 5.2.3 5.2.3 preamplifier and write driver preamplifier and write driver preamplifier and write driver preamplifier and write driver the preamplifier and write driver provides write driver and read ...

  • Page 56

    Basic principles of operation 5-11 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at discache works by continuing to fill its cache memory with adjacent data after transferring data requested by the host. Unlike a noncaching controller, quantum’s disk controller continues a read operation afte...

  • Page 57

    Basic principles of operation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5-12 the requested read data takes up a certain amount of space in the cache segment. Hence, the corresponding prefetch data can essentially occupy the rest of the space within the segment. The other factors determ...

  • Page 58

    Basic principles of operation 5-13 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5.3.2.4 5.3.2.4 5.3.2.4 5.3.2.4 skew offsets skew offsets skew offsets skew offsets table 5-2 table 5-2 table 5-2 table 5-2 skew offsets note: note: note: note: nominal wedge-to-wedge time of 56.25 ms is used....

  • Page 59

    Basic principles of operation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5-14 the drive does not need to re-read a sector on the next disk revolution or apply ecc for those errors that are corrected on-the-fly. Errors corrected in this manner are invisible to the host system. When error...

  • Page 60

    Basic principles of operation 5-15 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at complex firmware ecc algorithm, the drive will always try to recover from an error by attempting to re-read the data correctly. This strategy prevents invoking correction on non-repeatable errors. Each time a ...

  • Page 61

    Basic principles of operation quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 5-16.

  • Page 62

    Basic principles of operation 5-17 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at.

  • Page 63

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-1 chapter 6 chapter 6 chapter 6 chapter 6 ata bus interface and ata commands ata bus interface and ata commands ata bus interface and ata commands ata bus interface and ata commands this chapter describes the interface between quantum firebal...

  • Page 64

    Ata bus interface and ata commands 6-2 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at note: note: note: note: some host systems do not read the status register after the drive issues an interrupt. In such cases, the interrupt may not be acknowledged. To overcome this problem, you may have t...

  • Page 65

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-3 dd0 17 bit 0 dd1 15 bit 1 dd2 13 bit 2 dd3 11 bit 3 dd4 9 bit 4 dd5 7 bit 5 dd6 5 bit 6 dd7 3 bit 7 dd8 4 bit 8 dd9 6 bit 9 dd10 8 bit 10 dd11 10 bit 11 dd12 12 bit 12 dd13 14 bit 13 dd14 16 bit 14 dd15 18...

  • Page 66

    Ata bus interface and ata commands 6-4 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at cable select — 28 this is a signal from the host that allows the drive to be configured as drive 0 when the signal is 0 (grounded), and as drive 1 when the signal is 1 (high). The drive has a 10kw pull-up ...

  • Page 67

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-5 passed diagnostics pdiag– i/o 34 drive 0 (master) monitors this drive 1 (slave) open- collector output signal, which indicates the result of a diagnostics command or reset. The drive has a 10k pull-up resi...

  • Page 68

    Ata bus interface and ata commands 6-6 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at series termination resistors are required at both the host and the device for operation in any of the ultra ata/100 modes. Table 6-2 describes recommended values for series termination at the host and the ...

  • Page 69

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-7 6.4.1.3 6.4.1.3 6.4.1.3 6.4.1.3 ultra ata/100 80 conductor cable ultra ata/100 80 conductor cable ultra ata/100 80 conductor cable ultra ata/100 80 conductor cable the use of a 80 conductor cable is sugges...

  • Page 70

    Ata bus interface and ata commands 6-8 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at table 6-3 table 6-3 table 6-3 table 6-3 signal line definitions table 6-4 table 6-4 table 6-4 table 6-4 interface signal name assignments new definition new definition new definition new definition old def...

  • Page 71

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-9 note: note: note: note: 1. See signal descriptions for information on source of these signals. 2. Used during ultra dma protocol only. 3. Pins numbered 2, 19, 22, 24, 26, 30, and 40 are ground. 4. Pin numb...

  • Page 72

    Ata bus interface and ata commands 6-10 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at table 6-5 table 6-5 table 6-5 table 6-5 pio host interface timing figure 6-1 figure 6-1 figure 6-1 figure 6-1 pio interface timing symbol symbol symbol symbol description description description descripti...

  • Page 73

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-11 6.4.2.2 6.4.2.2 6.4.2.2 6.4.2.2 multiword dma transfer mode multiword dma transfer mode multiword dma transfer mode multiword dma transfer mode the multiword dma host interface timing shown in table 6-6 i...

  • Page 74

    Ata bus interface and ata commands 6-12 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at table 6-7 contains the values for the timings for each of the ultra dma modes. All timing measurement switching points (low to high and high to low) shall be taken at 1.5v. Table 6-8 contains descriptions...

  • Page 75

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-13 notes: notes: notes: notes: 1. All signal transitions for a timing parameter will be measured at the connector specified in the measured location column. For example, in the case of t rfs , both strobe an...

  • Page 76

    Ata bus interface and ata commands 6-14 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at notes: notes: notes: notes: 1. The parameters t ui , t mli and t li indicate sender-to-recipient or recipient-to- sender interlocks, i.E., one agent (either sender or recipient) is waiting for the other a...

  • Page 77

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-15 figure 6-3 figure 6-3 figure 6-3 figure 6-3 initiating a data in burst figure 6-4 figure 6-4 figure 6-4 figure 6-4 sustained data in burst note: note: note: note: dd(15:0) and dstrobe signals are shown at...

  • Page 78

    Ata bus interface and ata commands 6-16 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at figure 6-5 figure 6-5 figure 6-5 figure 6-5 host pausing a data in burst note: note: note: note: the host knows the burst is fully paused trp ns after hdmardy- is negated and may then assert stop to termi...

  • Page 79

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-17 figure 6-7 figure 6-7 figure 6-7 figure 6-7 host terminating a data in burst figure 6-8 figure 6-8 figure 6-8 figure 6-8 initiating a data out burst tdvh crc taz dmarq (device) dmack- (host) stop (host) h...

  • Page 80

    Ata bus interface and ata commands 6-18 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at figure 6-9 figure 6-9 figure 6-9 figure 6-9 sustained data out burst note: note: note: note: dd(15:0) and hstrobe signals are shown at both the device and the host to emphasize that cable settling time as...

  • Page 81

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-19 figure 6-11 figure 6-11 figure 6-11 figure 6-11 host terminating a data out burst dmarq (device) dmack- (host) stop (host) ddmardy- (device) hstrobe (host) dd(15:0) (host) da0, da1, da2, cs0-, cs1- tack t...

  • Page 82

    Ata bus interface and ata commands 6-20 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at figure 6-12 figure 6-12 figure 6-12 figure 6-12 device terminating a data out burst 6.4.2.3 6.4.2.3 6.4.2.3 6.4.2.3 host interface reset timing host interface reset timing host interface reset timing host...

  • Page 83

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-21 6.5 6.5 6.5 6.5 register address decoding register address decoding register address decoding register address decoding the host addresses the drive by using programmed i/o. Host address lines a0–a2, chip...

  • Page 84

    Ata bus interface and ata commands 6-22 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at after power on or following a reset, the drive initializes the command block registers to the values shown in table 6-11. Table 6-11 table 6-11 table 6-11 table 6-11 command block register initial values ...

  • Page 85

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-23 6.6.1.2 6.6.1.2 6.6.1.2 6.6.1.2 device control register device control register device control register device control register this write-only register contains two control bits, as shown in table 6-12. ...

  • Page 86

    Ata bus interface and ata commands 6-24 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.6.1.3 6.6.1.3 6.6.1.3 6.6.1.3 drive address register drive address register drive address register drive address register the drive address register returns the head-select addresses for the drive curre...

  • Page 87

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-25 table 6-14 table 6-14 table 6-14 table 6-14 error register bits 6.6.2.3 6.6.2.3 6.6.2.3 6.6.2.3 sector count register sector count register sector count register sector count register the sector count reg...

  • Page 88

    Ata bus interface and ata commands 6-26 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.6.2.6 6.6.2.6 6.6.2.6 6.6.2.6 cylinder high register cylinder high register cylinder high register cylinder high register the cylinder high register contains the eight high-order bits of the starting cy...

  • Page 89

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-27 6.6.2.8 6.6.2.8 6.6.2.8 6.6.2.8 status register status register status register status register the status register contains information about the status of the drive and the controller. The drive updates...

  • Page 90

    Ata bus interface and ata commands 6-28 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.6.2.9 6.6.2.9 6.6.2.9 6.6.2.9 command register command register command register command register the host sends a command to the drive by means of an 8-bit code written to the command register. As soon...

  • Page 91

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-29 sc = sector count register sn = sector number register cy = cylinder low and high registers ds = drive select bit (bit 4 of drive/head register) hd = 4 head select bits (bits 0–3 of drive head register) v...

  • Page 92

    Ata bus interface and ata commands 6-30 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at error outputs 6.7.2 6.7.2 6.7.2 6.7.2 read sectors read sectors read sectors read sectors command code – 20h description – the read sectors command reads from 1 to 256 sectors, beginning at the specified ...

  • Page 93

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-31 6.7.3 6.7.3 6.7.3 6.7.3 write sectors write sectors write sectors write sectors command code – 30h description – the write sectors command reads from 1 to 256 sectors, beginning at the specified sector. A...

  • Page 94

    Ata bus interface and ata commands 6-32 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.4 6.7.4 6.7.4 6.7.4 read verify sectors read verify sectors read verify sectors read verify sectors command code – 40h description – the read verify sectors executes similarly to the read sectors comm...

  • Page 95

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-33 6.7.5 6.7.5 6.7.5 6.7.5 seek seek seek seek command code – 70h description – the seek command causes the actuator to seek to the lba or cylinder location indicated in the lba registers or cylinder registe...

  • Page 96

    Ata bus interface and ata commands 6-34 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.6 6.7.6 6.7.6 6.7.6 execute drive diagnostics execute drive diagnostics execute drive diagnostics execute drive diagnostics command code – 90h description – the execute drive diagnostic command perfor...

  • Page 97

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-35 inputs outputs register register register register 7 77 7 6 66 6 5 55 5 4 44 4 3 33 3 2 22 2 1 11 1 0 00 0 features na sector count sector count sector number sector number or lba cylinder low cylinder lo...

  • Page 98

    Ata bus interface and ata commands 6-36 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.7 6.7.7 6.7.7 6.7.7 initialize drive parameters initialize drive parameters initialize drive parameters initialize drive parameters command code – 91h description – the initialize drive parameters com...

  • Page 99

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-37 6.7.8 6.7.8 6.7.8 6.7.8 download microcode download microcode download microcode download microcode command code - 92h type - optional protocol - pio data out inputs- the head bits of the device/head regi...

  • Page 100

    Ata bus interface and ata commands 6-38 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at sector count register will indicate no data is to transferred. This allows transfer sizes from 0 bytes to 33, 553, 920 bytes in 512 byte increments. The features register will be used to determine the eff...

  • Page 101

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-39 prerequisites - drdy set equal to one. Smart enabled. Description - this command disables all smart capabilities within the device including any and all timer functions related exclusively to this feature...

  • Page 102

    Ata bus interface and ata commands 6-40 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at normal outputs - none error outputs - if the device does not support this command, if smart is disabled or if the values in the features, cylinder low or cylinder high registers are invalid, an aborted co...

  • Page 103

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-41 6.7.9.2 6.7.9.2 6.7.9.2 6.7.9.2 smart enable operations smart enable operations smart enable operations smart enable operations command code - b0h type - optional - smart feature set. If the smart feature...

  • Page 104

    Ata bus interface and ata commands 6-42 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.9.3 6.7.9.3 6.7.9.3 6.7.9.3 smart read attribute thresholds smart read attribute thresholds smart read attribute thresholds smart read attribute thresholds command code - b0h type - optional - smart f...

  • Page 105

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-43 table 6-19 defines the twelve bytes that make up the information for each threshold entry in the device attribute thresholds data structure. Attribute entries in the individual threshold data structure mu...

  • Page 106

    Ata bus interface and ata commands 6-44 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at table 6-21 table 6-21 table 6-21 table 6-21 device smart data structure the attribute id numbers and their definitions are vendor specific. Any non-zero value in the attribute id number indicates an activ...

  • Page 107

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-45 6.7.9.4 6.7.9.4 6.7.9.4 6.7.9.4 smart return status smart return status smart return status smart return status command code - b0h type - optional - smart feature set. If the smart feature set is implemen...

  • Page 108

    Ata bus interface and ata commands 6-46 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.9.5 6.7.9.5 6.7.9.5 6.7.9.5 smart save attribute values smart save attribute values smart save attribute values smart save attribute values command code - b0h type - optional - smart feature set. If t...

  • Page 109

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-47 6.7.9.6 6.7.9.6 6.7.9.6 6.7.9.6 smart execute off-line collection immediate smart execute off-line collection immediate smart execute off-line collection immediate smart execute off-line collection immedi...

  • Page 110

    Ata bus interface and ata commands 6-48 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at prerequisites - drdy set equal to one. Smart enabled. Description - upon issuing of the smart command sub-code d4 the drive will begin an off-line testing. Any ecc correctable errors encountered during th...

  • Page 111

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-49 error outputs 6.7.11 6.7.11 6.7.11 6.7.11 write multiple sectors write multiple sectors write multiple sectors write multiple sectors command code – c5h description – the write multiple sectors execute si...

  • Page 112

    Ata bus interface and ata commands 6-50 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.12 6.7.12 6.7.12 6.7.12 set multiple mode set multiple mode set multiple mode set multiple mode command code – c6h the set multiple mode command enables the controller to perform read multiple and wri...

  • Page 113

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-51 6.7.13 6.7.13 6.7.13 6.7.13 read dma read dma read dma read dma command code – c8h;c9h description – the read dma command allows the host to write data using the dma transfer protocol. Inputs error output...

  • Page 114

    Ata bus interface and ata commands 6-52 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.14 6.7.14 6.7.14 6.7.14 write dma write dma write dma write dma command code – cah,cbh description – the write dma command allows the host to write data using the dma transfer protocol. The host shoul...

  • Page 115

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-53 6.7.14.1 6.7.14.1 6.7.14.1 6.7.14.1 power management commands power management commands power management commands power management commands the quantum fireball plus as hard disk drive provides numerous p...

  • Page 116

    Ata bus interface and ata commands 6-54 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.15 6.7.15 6.7.15 6.7.15 standby immediate standby immediate standby immediate standby immediate command code – e0h description – the standby immediate power command immediately puts the drive in the s...

  • Page 117

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-55 6.7.16 6.7.16 6.7.16 6.7.16 idle immediate idle immediate idle immediate idle immediate command code – e1h description – the idle immediate command immediately puts the drive in the idle mode. Inputs outp...

  • Page 118

    Ata bus interface and ata commands 6-56 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.17 6.7.17 6.7.17 6.7.17 standby standby standby standby command code – e2h description – the standby command causes the drive to enter the standby mode. If the sector count register is non-zero then t...

  • Page 119

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-57 6.7.18 6.7.18 6.7.18 6.7.18 idle idle idle idle command code – e3h description – the idle command immediately puts the drive into idle mode. The sector count register is examined. If the value of the regi...

  • Page 120

    Ata bus interface and ata commands 6-58 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.19 6.7.19 6.7.19 6.7.19 read buffer read buffer read buffer read buffer command code – e4h description – the read buffer command enables the host to read the current contents of the drive's sector buf...

  • Page 121

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-59 6.7.20 6.7.20 6.7.20 6.7.20 check power mode check power mode check power mode check power mode command code – e5h description – the check power mode allows the host to probe the drive to determine its cu...

  • Page 122

    Ata bus interface and ata commands 6-60 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.21 6.7.21 6.7.21 6.7.21 sleep sleep sleep sleep command code – e6h description – the quantum quantum fireball plus as hard disk drives considers the sleep mode to be equivalent to the standby mode, ex...

  • Page 123

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-61 6.7.22 6.7.22 6.7.22 6.7.22 flush cache flush cache flush cache flush cache command code – e7h description – the flush cache command allows the host to request the device to flush (empty) the write cache....

  • Page 124

    Ata bus interface and ata commands 6-62 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.23 6.7.23 6.7.23 6.7.23 write buffer write buffer write buffer write buffer command code – e8h description – the write buffer command enables the host to write to the drive's sector buffer. When the h...

  • Page 125

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-63 6.7.24 6.7.24 6.7.24 6.7.24 identify drive identify drive identify drive identify drive command code – ech description – the identify drive command allows the host to receive parameter information from th...

  • Page 126

    Ata bus interface and ata commands 6-64 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at inputs outputs register register register register 7 77 7 6 66 6 5 55 5 4 44 4 3 33 3 2 22 2 1 11 1 0 00 0 features na sector count na sector number na cylinder low na cylinder high na device/ head obs na...

  • Page 127

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-65 table 6-24 table 6-24 table 6-24 table 6-24 identify drive parameters words words words words 1 11 1 parameter description parameter description parameter description parameter description (statements bel...

  • Page 128

    Ata bus interface and ata commands 6-66 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 21 374h buffer size in 512-byte increments 22 4 number of ecc bytes passed on read/write long commands 23–26 firmware revision (8 ascii characters) 27–46 quantum fireball p as 10.2a quantum fireball p as ...

  • Page 129

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-67 60–61 10.2at = 20,066,251 20.5at = 40,132,503 30.0at = 58,633,344 40.0at = 78,177,792 60.0at = 117,266,688 total number of user addressable sectors (lba mode only) 62 15–8 7–0 n/a retired 63 15–8 7–0 4 7 ...

  • Page 130

    Ata bus interface and ata commands 6-68 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 83 15 14 13–10 9 8 7 6 5 4 3 2 1 0 4101h command sets supported. If words 82 and 83 =0000h or ffffh command set notification is not supported. Will be cleared to zero will be set to one reserved 1 = advan...

  • Page 131

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-69 86 15–10 9 8 7 6 5 4 3 2 1 0 1h command set/feature enabled. If words 85, 86, and 87 = 0000h or ffffh command set enabled notification is not supported. 1 = advanced acoustic management feature set enable...

  • Page 132

    Ata bus interface and ata commands 6-70 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 2. The serial number has the following format: 00qtmtcyjjjlssssbbb where:00 = placeholders qt = quantum m = place of manufacture t = drive type family (fixed at 2) c = drive capacity y = last digit of yea...

  • Page 133

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-71 6.7.25 6.7.25 6.7.25 6.7.25 set features efh set features efh set features efh set features efh the set features command is used by the host to establish certain parameters which control execution of the ...

  • Page 134

    Ata bus interface and ata commands 6-72 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.27 6.7.27 6.7.27 6.7.27 read defect list read defect list read defect list read defect list the read defect list command enables the host to retrieve the drive’s defect list. Prior to issuing the read...

  • Page 135

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-73 table 6-27 table 6-27 table 6-27 table 6-27 at read defect list command bytes note: note: note: note: registers 1f2h and 1f3h must contain the transfer length that is appropriate for the specific product,...

  • Page 136

    Ata bus interface and ata commands 6-74 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at table 6-28 table 6-28 table 6-28 table 6-28 defect list data format table 6-29 table 6-29 table 6-29 table 6-29 defect entry data format note: note: note: note: bytes 4 – 7 will be set to ffh for bad trac...

  • Page 137

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-75 6.7.28 6.7.28 6.7.28 6.7.28 configuration configuration configuration configuration in addition to the set features command, the quantum fireball plus as 10.2/ 20.5/30.0/40.0/60.0 gb at hard disk drives p...

  • Page 138

    Ata bus interface and ata commands 6-76 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at in table 6-31. However, in the read configuration command, bytes 0 through 31 of the data field are not key information, as they are in the set configuration command. The drive reads these bytes as quantu...

  • Page 139

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-77 table 6-32 table 6-32 table 6-32 table 6-32 accessing the set configuration without saving to disk command note: note: note: note: in table 6-32: registers 1f2h through 1f5h must contain the exact values ...

  • Page 140

    Ata bus interface and ata commands 6-78 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at table 6-33 table 6-33 table 6-33 table 6-33 configuration command format note: note: note: note: all fields marked reserved or n/a should be set to zero. 6.7.28.5 6.7.28.5 6.7.28.5 6.7.28.5 quantum config...

  • Page 141

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-79 rc – read continuous (byte 36, bit 4): when set to 1, this bit instructs the drive to transfer data of the requested length without adding delays to increase data integrity—that is, delays caused by the d...

  • Page 142

    Ata bus interface and ata commands 6-80 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.7.29.1 6.7.29.1 6.7.29.1 6.7.29.1 read native max address. Read native max address. Read native max address. Read native max address. Feature set: host protected area this command return the native maxi...

  • Page 143

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-81 set max address set max address set max address set max address inputs features - will be equal to 00h. Sector count - vv (value volatile). If bit 0 is set to one, the device will preserve the maximum val...

  • Page 144

    Ata bus interface and ata commands 6-82 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at cylinder high - maximum cylinder number high or lba bits (23:16) set on the device. Device/head - dev will indicate the selected device. Maximum native head number or lba bits (27:24) set on the device. D...

  • Page 145

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-83 description description description description this command requests a transfer of a single sector of data from the host. The table below defines the content of this sector of information. The password i...

  • Page 146

    Ata bus interface and ata commands 6-84 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at set max unlock set max unlock set max unlock set max unlock command code command code command code command code f9h with the content of the features register equal to 03h. Inputs inputs inputs inputs desc...

  • Page 147

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-85 set max freeze lock set max freeze lock set max freeze lock set max freeze lock command code command code command code command code f9h with the content of the features register equal to 04h. Inputs input...

  • Page 148

    Ata bus interface and ata commands 6-86 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6.8 6.8 6.8 6.8 error reporting error reporting error reporting error reporting at the start of a command’s execution, the quantum fireball plus as 10.2/20.5/ 30.0/40.0/60.0 gb at hard disk drives check t...

  • Page 149

    Ata bus interface and ata commands quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at 6-87 drdy=drive ready dsc=disk seek complete not detected df=device fault detected err=error bit in the status register idnf=requested id not found tk0=track zero not found error unc=uncorrectable data error.

  • Page 150

    Ata bus interface and ata commands 6-88 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at.

  • Page 151

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at g-1 glossary glossary glossary glossary a a a a access – (v) read, write, or update information on some storage medium, such as a disk. (n) one of these operations. Access time – the interval between the time a request for data is made by the s...

  • Page 152

    Glossary g-2 quantum fireball plus lm 10.2/15.0/20.5/30.0 gb at bpi – abbreviation for bits per inch. A measure of how densely information is packed on a storage medium. Flux changes per inch is also a term commonly used in describing storage density on a magnetic surface. Buffer – an area of ram re...

  • Page 153

    Glossary quantum fireball plus lm 10.2/15.0/20.5/30.0 gb at g-3 disk controller – a plug-in board, or embedded circuitry on the drive, that passes information to and from the disk. The quantum disk drives all have controllers embedded on the drive printed-circuit board. Diskware – the program instru...

  • Page 154

    Glossary g-4 quantum fireball plus lm 10.2/15.0/20.5/30.0 gb at g g g g gigabyte (gb) – one billion bytes (one thousand megabytes). Guide rails – plastic strips attached to the sides of a disk drive mounted in an ibm at and compatible computers so that the drive easily slides into place. H h h h hal...

  • Page 155

    Glossary quantum fireball plus lm 10.2/15.0/20.5/30.0 gb at g-5 k k k k kilobyte (k) – a unit of measure consisting of 1,024 (2 10 ) bytes. Llll landing zone – a position inside the disk’s inner cylinder in a non data area reserved as a place to rest the heads during the time that power is off. Usin...

  • Page 156

    Glossary g-6 quantum fireball plus lm 10.2/15.0/20.5/30.0 gb at mttr – mean time to repair. The average time it takes to repair a drive that has failed for some reason. This only takes into consideration the changing of the major sub-assemblies such as circuit board or sealed housing. Component leve...

  • Page 157

    Glossary quantum fireball plus lm 10.2/15.0/20.5/30.0 gb at g-7 rll – run length limited. A method used on some hard disks to encode data into magnetic pulses. Rll requires more processing, but stores almost 50% more data per disk than the mfm method. Rom – acronym for read only memory. Usually in t...

  • Page 158

    Glossary g-8 quantum fireball plus lm 10.2/15.0/20.5/30.0 gb at tttt thin film – a type of coating, used for disk surfaces. Thin film surfaces allow more bits to be stored per disk. Tpi – acronym for tracks per inch. The number of tracks or cylinders that are written in each inch of travel across th...

  • Page 159

    Quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at i-1 index index index index a abbreviations 1-1 actuator lock 5-4 adapter board 2-7, 3-13, 6-1 adaptive caching 5-10 adaptive segmentation 5-10 air filtration 5-5 airlock® 5-4 alternate status register 6-22 arr (automatic read reallocation) 6-7...

  • Page 160

    Index i-2 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at ecc error handling 5-14 eec (enable early correction) 6-79 endec 5-7 error bit 6-27 error detection, correction 5-13 error rates 5-13 error recovery parameters 6-78 error register 6-24 error reporting 6-86 f faceplate 3-1 firmware fea...

  • Page 161

    Index quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at i -3 q quantum configuration key 6-78 r r/w head matrix 5-10 rc (read continuous) 6-79 read configuration 6-75 read defect list 6-72 read preamplifier 5-4 read/write asic 5-10 register error 6-24 reset 6-23 reset limits 4-5 ripple 4-5 rot...

  • Page 162

    Index i-4 quantum fireball plus as 10.2/20.5/30.0/40.0/60.0 gb at.