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IBM REDPAPER 520Q Technical Overview And Introduction - Preface

Manual is about: IBM Server - Home Server User Manual

Summary of REDPAPER 520Q

  • Page 1

    Ibm.Com/redbooks red paper front cover ibm system p5 520 and 520q technical overview and introduction giuliano anselmi charlie cler carlo costantini bernard filhol sahngshin kim gregor linzmeier ondrej plachy finer system granulation using micro-partitioning technology to help lower tco support for ...

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    International technical support organization ibm system p5 520 and 520q technical overview and introduction september 2006.

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    © copyright international business machines corporation 2006. All rights reserved. Note to u.S. Government users restricted rights -- use, duplication or disclosure restricted by gsa adp schedule contract with ibm corp. Second edition (september 2006) this edition applies to ibm system p5 520 (produ...

  • Page 5: Contents

    © copyright ibm corp. 2006. All rights reserved. Iii contents notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vii trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

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    Iv ibm system p5 520 and 520q technical overview and introduction 2.6.2 scsi adapters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 2.6.3 integrated raid options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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    Contents v 3.1.3 permanent monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 3.1.4 self-healing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 3.1.5 n+1 redundancy . . . . . . . . ....

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    Vi ibm system p5 520 and 520q technical overview and introduction.

  • Page 9: Notices

    © copyright ibm corp. 2006. All rights reserved. Vii notices this information was developed for products and services offered in the u.S.A. Ibm may not offer the products, services, or features discussed in this document in other countries. Consult your local ibm representative for information on th...

  • Page 10: Trademarks

    Viii ibm system p5 520 and 520q technical overview and introduction trademarks the following terms are trademarks of the international business machines corporation in the united states, other countries, or both: eserver ® redbooks (logo) ™ pseries® aix 5l™ aix® chipkill™ ds4000™ ds6000™ ds8000™ fic...

  • Page 11: Preface

    © copyright ibm corp. 2006. All rights reserved. Ix preface this ibm redpaper is a comprehensive guide that covers the ibm® system p5™ 520 and 520q unix® servers. It introduces major hardware offerings and discusses their prominent functions. Professionals who want to acquire a better understanding ...

  • Page 12: Become A Published Author

    X ibm system p5 520 and 520q technical overview and introduction expertise include mainframe channel subsystem, ficon®, and pseries ras. He has written extensively on ficon. Sahngshin kim is a sales specialist of stg infra-solution sales team in seoul, korea. For three years, he was a sales speciali...

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    Preface xi use the online contact us review redbook form found at: ibm.Com/redbooks send your comments in an e-mail to: redbook@us.Ibm.Com mail your comments to: ibm corporation, international technical support organization dept. Hytd mail station p099 2455 south road poughkeepsie, ny 12601-5400

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    Xii ibm system p5 520 and 520q technical overview and introduction.

  • Page 15: General Description

    © copyright ibm corp. 2006. All rights reserved. 1 chapter 1. General description the ibm system p5 520 and ibm system p5 520q rack-mount and deskside servers (9131-52a) give you new tools for managing on demand business, greater application flexibility, and innovative technology in 1-core, 2-core, ...

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    2 ibm system p5 520 and 520q technical overview and introduction three non-hot-swappable media bays are used to accommodate additional devices. Two media bays only accept slim-line media devices, such as dvd-rom or dvd-ram drives, and one half-height bay is used for a tape drive. The rack-mount mode...

  • Page 17: 1.1  System Specifications

    Chapter 1. General description 3 1.1 system specifications table 1-1 lists the general system specifications of the p5-520 and p5-520q systems. Table 1-1 ibm system p5 520 and ibm system p5 520q specifications 1.2 physical package this section discusses the major physical attributes of the p5-520 an...

  • Page 18

    4 ibm system p5 520 and 520q technical overview and introduction figure 1-1 the deskside model (fc 7184) and acoustic cover (right fc 7185) the p5-520 or p5-520q, when configured as a deskside server, is ideal for environments that require local access to the machine, such as applications that requi...

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    Chapter 1. General description 5 1.2.2 rack-mount model the ibm system p5 520 or ibm system p5 520q can be configured as a 4u rack-mount model with the selected feature code. Table 1-3 lists the physical attributes and figure 1-2 shows the system. Table 1-3 physical attributes of the rack-mount mode...

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    6 ibm system p5 520 and 520q technical overview and introduction aix 5l system tools for configuration management if the adapter is connected to a common maintenance console, such as the 7316-tf3 rack-mounted flat-panel display. 1.3 minimum and optional features the systems are based on a flexible, ...

  • Page 21

    Chapter 1. General description 7 table 1-4 processor feature codes 1.3.2 memory features the minimum memory requirement for the p5-520 and p5-520q servers is 1 gb, and the maximum capacity is 32 gb using 533 mhz ddr2 technology. The planar of each system has eight sockets for memory dimms. Table 1-5...

  • Page 22

    8 ibm system p5 520 and 520q technical overview and introduction table 1-6 hot-swappable disk drive options you can install any combination of the following dvd-rom and dvd-ram drives in the two slim-line bays: dvd-ram drive, fc 1993 dvd-rom drive, fc 1994 a logical partition running a supported rel...

  • Page 23

    Chapter 1. General description 9 four attached 7311 model d20 drawers, the combined system supports up to 34 pci-x adapters (in a maximum configuration, remote i/o expansion cards are required) and 56 hot-swappable scsi disks, for a total internal capacity of 16.8 tb using 300 gb disks. Pci-x and pc...

  • Page 24

    10 ibm system p5 520 and 520q technical overview and introduction 1.3.6 hardware management console models a p5-520 or p5-520q can be either hmc-managed or non-hmc-managed. In hmc-managed mode, an hmc is required as a dedicated workstation that allows you to configure and manage partitions. The hmc ...

  • Page 25

    Chapter 1. General description 11 1.4 express product offerings the express product offerings provide a convenient way to order any of several configurations that are designed to meet typical client requirements. Special reduced pricing is available when a system order satisfies specific configurati...

  • Page 26: 1.5  System Racks

    12 ibm system p5 520 and 520q technical overview and introduction table 1-8 express product offering standard set of feature codes a specific express product offering id or specific offering feature code is used to select the processor type and quantity, and the associated memory feature code and qu...

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    Chapter 1. General description 13 if a server is to be installed in a non-ibm rack or cabinet, you must ensure that the rack conforms to the eia 2 standard eia-310-d (see 1.5.9, “oem rack” on page 21). 1.5.1 ibm 7014 model t00 rack the 1.8-meter (71-inch) model t00 is compatible with past and presen...

  • Page 28

    14 ibm system p5 520 and 520q technical overview and introduction optional rear door heat exchanger (fc 6858) improved cooling from the heat exchanger enables the client to more densely populate individual racks freeing valuable floor space without the need to purchase additional air conditioning un...

  • Page 29

    Chapter 1. General description 15 width: 605 mm (23.8 in.) with side panels depth: 1001 mm (39.4 in.) with front door height: 1344 mm (49.0 in.) weight: 100.2 kg (221.0 lb.) the s25 rack has a maximum load limit of 22.7 kg (50 lb.) per eia unit for a maximum loaded rack weight of 667 kg (1470 lb.). ...

  • Page 30

    16 ibm system p5 520 and 520q technical overview and introduction table 1-11 models supported in s11 and s25 racks 1.5.6 the ac power distribution unit and rack content for rack models t00 and t42, 12-outlet pdus (fc 9188 and fc 7188) are available. For rack models s11 and s25, fc 7188 is available....

  • Page 31

    Chapter 1. General description 17 the s11 and s25 racks support as many pdus as there is available rack space. For detailed power cord requirements and power cord feature codes, see ibm system p5, ibm eserver p5 and i5, and openpower edition planning, sa38-0508. For an online copy, select map of pse...

  • Page 32

    18 ibm system p5 520 and 520q technical overview and introduction 1.5.7 rack-mounting rules the primary rules that you should follow when you mount the server into a rack are: the p5-520 or p5-520q is designed to be placed at any location in the rack. For rack stability, we advise that you start fil...

  • Page 33

    Chapter 1. General description 19 reading and writing on ultrium 2 tape cartridges, it is also read and write compatible with ultrium 1 cartridges. Slr60 tape drive (qic format) comes with 37.5 gb native data physical capacity per tape cartridge and a native physical data transfer rate of up to 4 mb...

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    20 ibm system p5 520 and 520q technical overview and introduction occupies only 1u (1.75 in) in a 19-inch standard rack the 1x8 console switch can be mounted in one of the following racks: 7014-t00, 7014-t42, 7014-s11, or 7014-s25. The 1x8 console switch supports gxt135p (fc 1980 and fc 2849) graphi...

  • Page 35

    Chapter 1. General description 21 the switch offers four ports for server connections. Each port in the switch can connect a maximum of 16 systems: – one kco cable (fc 4268) or usb cable (fc 4269) is required for every four systems supported on the switch. – a maximum of 16 kco cables or usb cables ...

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    22 ibm system p5 520 and 520q technical overview and introduction figure 1-5 top view of non-ibm rack specification dimensions the vertical distance between the mounting holes must consist of sets of three holes spaced (from bottom to top) 15.9 mm (0.625 in.), 15.9 mm (0.625 in.), and 12.67 mm (0.5 ...

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    Chapter 1. General description 23 figure 1-7 rack specification dimensions, bottom front view it might be necessary to supply additional hardware, such as fasteners, for use in some manufacturer’s racks. The system rack or cabinet must be capable of supporting an average load of 15.9 kg (35 lb.) of ...

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    24 ibm system p5 520 and 520q technical overview and introduction.

  • Page 39: Architecture and Technical

    © copyright ibm corp. 2006. All rights reserved. 25 chapter 2. Architecture and technical overview this chapter discusses the overall system architecture of the p5-520 and p5-520q. Figure 2-1 details the base system hardware and the dcm or qcm options. (you cannot mix an installation of dcm and qcm ...

  • Page 40: 2.1  The Power5+ Processor

    26 ibm system p5 520 and 520q technical overview and introduction 2.1 the power5+ processor the ibm power5+ processor capitalizes on all the enhancements brought by the power5 processor. For a detailed description of the power5 processor, refer to ibm system p5 520 technical overview and introductio...

  • Page 41: 2.2  Processor and Cache

    Chapter 2. Architecture and technical overview 27 double the smp support. Changes have been made in the fabric, l2 and l3 controller, memory controller, gx controller, and processor ras to provide support for the qcm that allows the smp system sizes to be double that which is available in power5 dcm...

  • Page 42

    28 ibm system p5 520 and 520q technical overview and introduction figure 2-4 p5-520 power5+ 2.1 ghz scm with ddr2 memory socket layout view the storage structure for the power5+ processor is a distributed memory architecture that provides high-memory bandwidth. The processor is interfaced to eight m...

  • Page 43

    Chapter 2. Architecture and technical overview 29 sees a single shared memory resource. They are interfaced to eight memory slots, controlled by two smi-ii chips, which are located in close physical proximity to the processor modules. I/o connects to the p5-520 processor module using the gx+ bus. Th...

  • Page 44: 2.3  Memory Subsystem

    30 ibm system p5 520 and 520q technical overview and introduction 2.2.4 available processor speeds table 2-1 lists the available processor capacities and speeds for the p5-520 and p5-520q systems. Table 2-1 p5-520 and p5-520q available processor capacities and speeds to determine the processor chara...

  • Page 45

    Chapter 2. Architecture and technical overview 31 figure 2-7 memory placement for the p5-520 and p5-520q servers 2.3.1 memory placement rules table 2-2 lists the memory features that are available at the time of writing for the p5-520 and p5-520q servers. Table 2-2 available memory features memory c...

  • Page 47: 2.4  I/o Buses

    Chapter 2. Architecture and technical overview 33 table 2-3 theoretical throughput rates 2.4 i/o buses this section provide additional information that is related to the internal rio-2 buses and gx+ buses. The qcm or dcm provides a gx+ bus. In the past, the 6xx bus was the front end from the process...

  • Page 48: 2.5  Internal I/o Subsystem

    34 ibm system p5 520 and 520q technical overview and introduction figure 2-9 p5-520 or p5-520q gx+ bus connection overview according to the processor speed, the i/o subsystem is capable of supporting 5.6 gbps when using the 2.1 ghz processor, or capable of supporting 4.4 gbps when using a 1.65 ghz p...

  • Page 49

    Chapter 2. Architecture and technical overview 35 2.6 64-bit and 32-bit adapters ibm offers 64-bit adapter options for the p5-520 and p5-520q, as well as 32-bit adapters. Higher-speed adapters use 64-bit slots because they can transfer 64 bits of data for each data transfer phase. Generally, 32-bit ...

  • Page 50

    36 ibm system p5 520 and 520q technical overview and introduction you also have the option to make the internal ultra320 scsi channel externally accessible on the rear side of the system by installing fc 4275. No additional scsi adapter is required in this case. If fc 4275 is installed, a second 4-p...

  • Page 51

    Chapter 2. Architecture and technical overview 37 the iscsi protocol is implemented on top of the physical and data-link layers and presents to the operating system a standard scsi access method command set. It supports scsi-3 commands and reliable delivery over ip networks. The iscsi protocol runs ...

  • Page 52

    38 ibm system p5 520 and 520q technical overview and introduction ibm iscsi software host support kit the iscsi protocol can also be used over standard gigabit ethernet adapters. To utilize this approach, download the appropriate iscsi host support kit for your operating system from the ibm nas supp...

  • Page 53

    Chapter 2. Architecture and technical overview 39 table 2-7 available fibre channel adapters 2.6.6 graphic accelerators the p5-520 and p5-520q support up to four enhanced power gxt135p (fc 1980) 2d graphic accelerators. The power gxt135p is a low-priced 2d graphics accelerator for ibm system p5 serv...

  • Page 54

    40 ibm system p5 520 and 520q technical overview and introduction in many cases, the 5723 asynchronous adapter is configured to supply a backup hacmp heartbeat. In these cases, a serial cable (fc 3927 or fc 3928) must be also configured. Both of these serial cables and the 5723 adapter have 9-pin co...

  • Page 55: 2.7  Internal Storage

    Chapter 2. Architecture and technical overview 41 2.6.12 ethernet ports the two built-in ethernet ports provide 10/100/1000 mbps connectivity over cat-5 cable for up to 100 meters. Table 2-9 lists the attributes of the leds that are visible on the side of the jack. Table 2-9 ethernet led description...

  • Page 56

    42 ibm system p5 520 and 520q technical overview and introduction assigns the name ses0 to the first 4-pack, and ses1 to the second, if present). The two hot-swappable 4-pack disk drive backplanes can accommodate the devices listed in table 2-11. Table 2-11 available hot-swappable disk drives at the...

  • Page 57: 2.8  External I/o Subsystem

    Chapter 2. Architecture and technical overview 43 2.8 external i/o subsystem this section describes the external i/o subsystem, the 7311 d20 i/o drawer that is the only drawer supported on the p5-520 and p5-520q systems. 2.8.1 i/o drawers as described in chapter 1, “general description” on page 1, t...

  • Page 58

    44 ibm system p5 520 and 520q technical overview and introduction figure 2-11 7311 model d20 internal scsi cabling 2.8.2 7311 i/o drawer rio-2 cabling as described in 2.8, “external i/o subsystem” on page 43, you can connect up to four i/o drawers in the same loop to the p5-520 or p5-520q system. Ea...

  • Page 59

    Chapter 2. Architecture and technical overview 45 figure 2-12 rio-2 connections the rio-2 cables used have different lengths to satisfy the different connection requirements: remote i/o cable, 1.2 m (fc 3146) remote i/o cable, 1.75 m (fc 3156) remote i/o cable, 2.5 m (fc 3168) remote i/o cable, 3.5 ...

  • Page 60

    46 ibm system p5 520 and 520q technical overview and introduction figure 2-13 spcn cabling examples there are different spcn cables to satisfy different length requirements: spcn cable drawer to drawer, 2 m (fc 6001) spcn cable drawer to drawer, 3 m (fc 6006) spcn cable rack to rack, 6 m (fc 6008) s...

  • Page 61

    Chapter 2. Architecture and technical overview 47 36.4 gb, 73.4 gb or 146.8 gb 15k rpm drives. Each of the four six-packs disk drive enclosure can be attached independently to an ultra320 scsi or ultra320 scsi raid adapter. For high available configurations, a dual bus repeater card (fc 5742) allows...

  • Page 62: 2.10  Logical Partitioning

    48 ibm system p5 520 and 520q technical overview and introduction 2.10 logical partitioning dynamic logical partitions (lpars) and virtualization increase utilization of system resources and add a new level of configuration possibilities. This section provides details and configuration specification...

  • Page 63

    Chapter 2. Architecture and technical overview 49 2.11.1 power hypervisor combined with features designed into the power5 and power5+ processors, the power hypervisor delivers functions that enable other system technologies, including micro-partitioning technology, virtualized processors, ieee vlan,...

  • Page 64

    50 ibm system p5 520 and 520q technical overview and introduction client adapter. Only the virtual i/o server partition can define virtual scsi server adapters, other partitions are client partitions. The virtual i/o server is available with the optional advanced power virtualization feature (fc 794...

  • Page 65

    Chapter 2. Architecture and technical overview 51 2.12 advanced power virtualization feature the advanced power virtualization feature (fc 7940) is an optional, additional cost feature. This feature enables the implementation of more fine-grained virtual partitions on ibm system p5 servers. The adva...

  • Page 66

    52 ibm system p5 520 and 520q technical overview and introduction a partition can be defined with a processor capacity as small as 0.10 processing units. This represents one-tenth of a physical processor. Each physical processor can be shared by up to 10 shared processor partitions, and a partition’...

  • Page 67

    Chapter 2. Architecture and technical overview 53 virtual processors do not introduce any additional abstraction level, they are really only a dispatch entity. When running on a physical processor, they run at the full speed of the physical processor. Each partition’s profile defines a cpu entitleme...

  • Page 68

    54 ibm system p5 520 and 520q technical overview and introduction figure 2-14 logical, virtual, and physical processor mapping in figure 2-14, a system with four physical processors and four partitions is presented; one partition (lpar4) is in dedicated mode and three partitions (lpar1, lpar2, and l...

  • Page 69

    Chapter 2. Architecture and technical overview 55 figure 2-15 micro-partitioning technology and vios because the virtual i/o server is an operating system-based appliance server, redundancy for physical devices attached to the virtual i/o server can be provided by using capabilities such as multipat...

  • Page 70

    56 ibm system p5 520 and 520q technical overview and introduction shared ethernet adapter a shared ethernet adapter (sea) is a virtual i/o server service that acts as a layer 2 network bridge between a physical ethernet adapter or aggregation of physical adapters (etherchannel) and one or more virtu...

  • Page 71

    Chapter 2. Architecture and technical overview 57 virtual i/o server version 1.3 virtual i/o server version 1.3 brings a host of new enhancements, including improved monitoring such as additional topas and viostat performance metrics and the bundling of the performance toolkit (ptx®) agent. Virtual ...

  • Page 72

    58 ibm system p5 520 and 520q technical overview and introduction management solution that inherits some hmc features, thus avoiding the necessity of a dedicated control workstation. This solution enables the administrator to reduce system setup time. Ivm is targeted at small and medium systems. Ivm...

  • Page 73

    Chapter 2. Architecture and technical overview 59 ivm cannot be used by hacmp software to activate capacity on demand (cod) resources on machines that support cod. Ivm provides advanced virtualization functionality without the need for an extra-cost workstation. For more information about ivm functi...

  • Page 74

    60 ibm system p5 520 and 520q technical overview and introduction table 2-13 operating system supported functions 2.13 hardware management console the hardware management console (hmc) is a dedicated workstation that provides a graphical user interface for configuring, operating, and performing basi...

  • Page 75

    Chapter 2. Architecture and technical overview 61 figure 2-17 hmc to service processor and lpars network connection the default mechanism for allocation of the ip addresses for the service processor hmc ports is dynamic. The hmc can be configured as a dhcp server, providing the ip address at the tim...

  • Page 76

    62 ibm system p5 520 and 520q technical overview and introduction 2.13.1 high availability using the hmc the hmc is an important hardware component. Hacmp version 5.3 high availability cluster software can be used to activate resources automatically (where available), thus becoming an integral part ...

  • Page 77

    Chapter 2. Architecture and technical overview 63 unpartitioned system. You can create an entirely new system configuration, or you can create a system configuration based upon any of the following: performance data from an existing system that the new system is to replace performance estimates that...

  • Page 78

    64 ibm system p5 520 and 520q technical overview and introduction 2.14 operating system support the p5-520 and p5-520q are capable of running the aix 5l and linux operating systems. The aix 5l operating system has been developed and enhanced specifically to exploit and to support the extensive ras f...

  • Page 79

    Chapter 2. Architecture and technical overview 65 configuration changes are necessary to enable a system to use 64 kb pages; they are fully pageable, and the size of the pool of 64 kb page frames on a system is dynamic and fully managed by aix 5l. The main benefit of a larger page size is improved p...

  • Page 80: 2.15  Service Information

    66 ibm system p5 520 and 520q technical overview and introduction many of the features that are described in this document are operating system dependent and might not be available on linux. For more information, see: http://www.Ibm.Com/systems/p/software/whitepapers/linux_overview.Pdf specially pri...

  • Page 81

    Chapter 2. Architecture and technical overview 67 2.15.1 touch point colors blue (ibm blue) or terra-cotta (orange) on a component indicates a touch point (for electronic parts) where you can grip the hardware to remove it from or install it into the system, open or close a latch, and so on. Ibm def...

  • Page 82

    68 ibm system p5 520 and 520q technical overview and introduction figure 2-20 pull the server to the service position 3. Release the rack latches (c) on both the left and right sides, as shown in the figure 2-20. 4. Review the following notes, and then slowly pull the system or expansion unit out fr...

  • Page 83

    Chapter 2. Architecture and technical overview 69 2.15.5 operator control panel the service processor provides an interface to the control panel that is used to display server status and diagnostic information. See figure 2-21 for operator control panel physical details and buttons. Figure 2-21 oper...

  • Page 84

    70 ibm system p5 520 and 520q technical overview and introduction function 30 – cec sp ip address and location function 30 is one of the extended control panel functions and is only available when manual mode is selected. You can use this function to display the central electronic complex (cec) serv...

  • Page 85

    Chapter 2. Architecture and technical overview 71 the following examples are the output of the lsmcode command for aix 5l and linux, showing the firmware levels as they are displayed in the outputs: aix 5l the current permanent system firmware image is sf220_005. The current temporary system firmwar...

  • Page 86

    72 ibm system p5 520 and 520q technical overview and introduction receive server firmware fixes using an hmc if you use an hmc to manage your server and you need to configure several partitions on the server periodically, you need to download and install fixes for your server and power subsystem fir...

  • Page 87

    Chapter 2. Architecture and technical overview 73 2.15.7 service processor the service processor is an embedded controller running the service processor internal operating system. The service processor operating system contains specific programs and device drivers for the service processor hardware....

  • Page 88

    74 ibm system p5 520 and 520q technical overview and introduction this interface is accessible using a web browser on a client system that is connected directly to the service processor (in this case, you can use either a standard ethernet cable or a crossed cable) or through an ethernet network. Us...

  • Page 89

    Chapter 2. Architecture and technical overview 75 3. Look for the power-on self-test (post) indicators: memory, keyboard, network, scsi, and speaker that appear across the bottom of the screen. Press the numeric 1 key after the word keyboard appears and before the word speaker appears. The sms menus...

  • Page 90

    76 ibm system p5 520 and 520q technical overview and introduction through a power-on reset. Open firmware, which runs in addition to the hypervisor in a partitioned environment, runs in two modes: global and partition. Each mode of open firmware shares the same firmware binary that is stored in the ...

  • Page 91: Ras and Manageability

    © copyright ibm corp. 2006. All rights reserved. 77 chapter 3. Ras and manageability this chapter provides information about ibm system p5 design features that help lower the total cost of ownership (tco). Ibm reliability, availability, and service (ras) technology allow you to improve your tco arch...

  • Page 92

    78 ibm system p5 520 and 520q technical overview and introduction 3.1 reliability, availability, and serviceability excellent quality and reliability are inherent in all aspects of the ibm system p5 processor design and manufacturing. The fundamental objective of the design approach is to minimize o...

  • Page 93

    Chapter 3. Ras and manageability 79 figure 3-1 schematic of fault isolation register implementation the firs are important because they enable an error to be uniquely identified, thus enabling the appropriate action to be taken. Appropriate actions might include such things as a bus retry, ecc corre...

  • Page 94

    80 ibm system p5 520 and 520q technical overview and introduction the operating system cannot program or access the temperature threshold using the sp. Epow events can, for example, trigger the following actions: temperature monitoring, which increases the fan’s rotation speed when ambient temperatu...

  • Page 95

    Chapter 3. Ras and manageability 81 3.1.5 n+1 redundancy the use of redundant parts allows the p5-520 and p5-520q to remain operational with full resources: redundant spare memory bits in l1, l2, l3, and main memory redundant fans redundant power supplies (optional) 3.1.6 fault masking if correction...

  • Page 96

    82 ibm system p5 520 and 520q technical overview and introduction if the output shows cpu guard as disabled, enter the following command to enable it: chdev -l sys0 -a cpuguard='enable' cache or cache-line deallocation is aimed at performing dynamic reconfiguration to bypass potentially failing comp...

  • Page 97: 3.2  Manageability

    Chapter 3. Ras and manageability 83 internal led diagnostics that identify the parts that require service. Attenuation of the error is provided through a series of light attention signals, starting on the exterior of the system (system attention led) which is located on the front of the system and e...

  • Page 98

    84 ibm system p5 520 and 520q technical overview and introduction manage the machine-wide settings using the asmi and allows complete system and partition management from the hmc. Also, the surveillance function of the sp is monitoring the operating system to check that it is still running and has n...

  • Page 99

    Chapter 3. Ras and manageability 85 – concurrent mode enables the normal system functions to continue while you are checking selected resources. Because the system is running in normal operation, some devices might require additional actions by the user or diagnostic application before testing can b...

  • Page 100

    86 ibm system p5 520 and 520q technical overview and introduction service agent sends outbound transmissions only and does not allow any inbound connection attempts. Only hardware machine configuration, machine status, or error information is transmitted. Service agent does not access or transmit an...

  • Page 101

    Chapter 3. Ras and manageability 87 you can download the latest version of service agent at: ftp://ftp.Software.Ibm.Com/aix/service_agent_code service focal point traditional service strategies become more complicated in a partitioned environment. Each logical partition reports errors it detects, wi...

  • Page 102: 3.3  Cluster Solution

    88 ibm system p5 520 and 520q technical overview and introduction cannot be concurrently activated, are deferred. Figure 3-4 shows the system firmware file naming convention. Figure 3-4 system firmware file naming convention an installation is disruptive if: the release levels (xxx) of currently ins...

  • Page 103

    Chapter 3. Ras and manageability 89 cluster. If a server that is configured in partition mode (with physical or virtual resources) is part of the cluster, all partitions must be part of the cluster. Monitoring is much easier to use, and the system administrator can monitor all of the network interfa...

  • Page 104

    90 ibm system p5 520 and 520q technical overview and introduction.

  • Page 105: Related Publications

    © copyright ibm corp. 2006. All rights reserved. 91 related publications the publications listed in this section are considered particularly suitable for a more detailed discussion of the topics that are covered in this redpaper. Ibm redbooks for information about ordering these publications, see “h...

  • Page 106: Online Resources

    92 ibm system p5 520 and 520q technical overview and introduction ibm sserver hardware management console for pseries installation and operations guide, sa38-0590, provides information to operators and system administrators about how to use a ibm hardware management console for pseries (hmc) to mana...

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