Quantum LTO-5 HH SAS C, Техническое справочное руководство

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Chapter 6: Troubleshooting
Resolving Problems Reported by the Server
Quantum LTO-5 HH SAS Model C User’s Guide 81
4 Verify the SAS host adapter is supported by the tape drive.
5 Ensure there is a point-to-point connectivity between the server and
the tape drive. SAS connectivity does not support multiple drive
connections (daisy-chaining of devices).
6 Check the length of the SAS cable. It can not exceed 5.5m (18 ft).
Resolving Problems Reported by the Server
The procedure for fixing interface bus errors varies, depending on
whether the error is consistent or intermittent, and on your
configuration. The sections that follow describe how to fix an error.
Fixing SAS Bus Errors
1 Check if the tape drive power is on.
2 Verify the SAS cable is connected properly to the server and to the
tape drive.
3 Replace SAS cable if it shows any signs of damage.
Resolving Media-Related Problems
To resolve problems that are related to media, the drive's firmware
includes:
• Test Cartridge & Media diagnostic that verifies whether a suspect
cartridge and its magnetic tape are acceptable for use.
• Statistical Analysis and Reporting System (SARS) to assist in isolating
failures between media and hardware. To determine the cause of
failure, SARS uses the cartridge performance history that is saved in
the cartridge memory (CM) and the drive performance history that
is kept in the drive's VPD (Vital Product Data) area in NVRAM. Any
failures that SARS detects are reported as TapeAlert flags on the
server (see Quantum LTO Ultrium Tape Drive SCSI Reference).