68
Troubleshooting
Table 10 Troubleshooting Matrix – SCSI with Solution
Problem
Solution
SCSI problems
Changed SCSI ID, but the host
server system does not
recognize the new ID
Make sure that all SCSI devices on the same bus have
unique ID numbers.
If the SCSI bus is narrow (50-pin) only SCSI IDs 0 through 7
are available.
Make sure that you reboot the library after changing the SCSI
ID.
Reboot the host server system.
The tape drive does not
respond on the SCSI bus to the
host
Verify that a SCSI terminator is attached to both the last and
first SCSI device on the SCSI bus.
Verify that the SCSI cables are connected to the rear of the
library. See section
Connecting Library Cables (SCSI)
.
Make sure that the correct host controller card is installed.
Verify that the SCSI cables are not damaged and that the
total SCSI cable length is not exceeding the maximum
required length.
Verify that the drive SCSI IDs are set to unique SCSI IDs that
are not used by any other SCSI device on the same bus.
Verify that the host application and the device drivers are
installed with the most resent patches to support the tape
drive
Issue a system reset from the front panel or remote
management
Make sure the drive CRU is properly inserted into the bay.
Reboot the library by turning power off from the rear of the
library and then on.
Reboot the host system when the library has completed it’s
power on sequence.
Contact your service representative.
Table 11 Troubleshooting Matrix – Library Performance with Solution
Problem
Solution
Library Performance
The library is not efficiently
backing up data
Check the network bandwidth from the host system. If you
are backing up data over a network, consider comparing to a
local-only backup.
Verify that the host application and the device drivers are
installed with the most resent patches to support the tape
drive and the library.
Connect the library to an LVD SCSI bus and make sure there
are no SE devices on the same bus, because this causes the
entire bus to negotiate down to SE speed.
Clean the tape drive. See section
Cleaning Tape Drives
.
Try a new cartridge. A marginal cartridge can cause
performance problems due to bad spots on the tape requiring
retries.
Backing up compressed data lowers performance.
Check the size of the files. Small file size can impact
performance.
Summary of Contents for STORAGELIBRARY
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Page 32: ...24 Information about the Operator Interfaces Figure 14 Front Panel Interface Menu Tree...
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Page 64: ...56 Adding Removing and Replacing Figure 23 Adding Removing or Replacing a Drive CRU...
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