TANDBERG B DLTSAGE INTEGRATION Integration Manual - page 31
DLTSage Integration Guide
81-81201-01 Rev A01
October 2003
A-3
A.2.2 MODE SENSE Command Pages
The MODE SENSE command pages provide information about the current operating mode of the tape
drive, including the number of write and read retries the tape drive performs before reporting an error,
the density of the media currently loaded in the tape drive, and a wide variety of other configuration
settings. The MODE SELECT (6) / (10) command (15h / 55h) sets these configuration settings.
A.2.3 Modifying the Media Load Count Threshold
The media load count threshold for DLTSage is a parameter of the EEPROM Vendor Specific Page
(page 3Eh) of the MODE SELECT command. The parameter name is SageLoadCountThresh; it is an
ASCII / Decimal data type. The allowable range for this parameter is 2 to 50. The value of this
parameter is multiplied by 100 to achieve the actual load count threshold. For example, a value of 2
translates to a Media Life Warning threshold of 200; a value of 36 translates to a Media Life Warning
threshold of 3,600. The default value for this parameter is 50, or a Media Life Warning threshold
of 5,000.
The SageLoadCountThresh parameter is not a Medium Auxiliary Memory (MAM) attribute and as a
result cannot be set using the WRITE ATTRIBUTE command. This also means that the Media Life
Warning threshold cannot be set on a per-cartridge basis, but is the same for all cartridges used with a
given SDLT 600 tape drive.
A.3 Medium Auxiliary Memory (MAM) Attributes
This section describes Quantum’s Medium Auxiliary Memory (MAM) attributes. Quantum’s MAM
capacity is 32 KB. For more information about Quantum’s specific implementation of MAM, see your
tape drive’s interface guide.
The following relevant information is stored in MAM:
•
The native (uncompressed) capacity and the remaining capacity of the media.
•
All TapeAlert flags set during the previous load of the media.
•
The number of times the media has been loaded into any tape drive.
•
The formatted density of the media.
•
The number of times the media has been formatted.
•
The serial numbers of the last four tape drives that loaded the media.
•
The total MB of data written to and read from the media during its lifetime.