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Drives in Tape Arrays 63
Drives in Tape Arrays
Problems with the Drive and Cartridge
Tape drive does not work
The computer no longer recognizes the drive
The tape drive’s SCSI ID address is
not unique.
Make sure that each device connected to the SCSI controller has
a unique SCSI ID. Remember that 7 is normally reserved for the
host bus adapter.
Possible Cause Potential Solution
Possible Cause Potential Solution
The drive is not receiving power from
the tape array.
3
Check that the tape array is connected to a power source
and switched on.
3
Check that the drive is properly inserted into the tape array
so that it mates with the connections at the rear of the
enclosure. The extraction lever should be pushed in, locking
the drive in position.
3
If the drive ‘Ready’ LED is still off, call for assistance.
There is a fault with the drive. If possible, and if no other drives in the tape array are in use, try
resetting the drive, or turning the power switch on the tape array
off and then on again. (If there is a tape cartridge loaded in the
drive, try to unload it by pressing the Eject button. If this
succeeds, switch the tape array off and then on again.
If the problem persists, call for assistance.
Possible Cause Potential Solution
You powered up the drive or added
it to the tape array after the host
system was turned on.
The host computer system only identifies which IDs are present on
SCSI buses after power-on or a reset. To make the host look for
devices on the bus, you need to reset the host. You should be able
to do this using the SCSI management software on your computer.
As a last resort, you could turn the host system off and on again
.
You changed the drive’s SCSI ID
after the host system was turned on.
3
If you have replaced a drive that was recognized by the host,
the host should recognize the new drive at the same SCSI ID
as its predecessor.
3
If you make any changes to SCSI IDs (on the back on the tape
array), you need to reset the bus for the host to recognize the
changes.