IBM 3590 - Manual (Page 125)

Appendix C. Problem Determination
SCSI Bus
Devices on the SCSI bus must be varied off-line before the problem
determination procedure can be performed.
Due to the 3590 Ultra/Wide device speed, SCSI time-outs may occur to other
peripherals if it is placed on a shared SCSI bus with multiple peripherals. To
prevent this, both the Host Adapter SCSI address, and the 3590 Ultra SCSI
address should be lower (0 or 1) then the SCSI addresses of the peripherals (E
or F). This gives the other peripherals higher priority and allows successful
SCSI bus sharing.
Determine the number of drives on the SCSI bus.
If the problems exist with more than one drive, for example with all the
devices on the SCSI bus, either the bus is hung or the SCSI cable from the
host to the first device on the bus is defective.
v Verify the drive power is ON.
v Verify the drive SCSI address is the same as the SCSI address being used by
the host program.
v Check the SCSI attachment in their environments.
– For the SCSI attachment in an AIX ™ environment, see “AIX Environment
Attachment Check”.
– For the SCSI attachment in an AS/400 environment, see “AS/400
Environment Attachment Check” on page 107.
– For the SCSI attachment in an HP-UX environment, see “HP-UX
Environment Attachment Check” on page 107.
– For the SCSI attachment in a Sun environment, see “Sun Environment
Attachment Check” on page 108.
– For the SCSI attachment in a Windows NT environment, see “Windows
NT and Windows 2000 Environment Attachment Check” on page 109.
v If problems exist after checking the SCSI environment, call the appropriate
host or drive service organization.
AIX Environment Attachment Check
Verify a 3590 is properly attached in an AIX environment with the following
procedure. For more information, see IBM SCSI Tape Drive, Medium Changer,
and Library Device Drivers.
© Copyright IBM Corp. 1995, 2001 105