IBM 3590 manual Appendix C. Problem Determination, Scsi Bus, AIX Environment Attachment Check

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.

vVerify the drive power is ON.

vVerify the drive SCSI address is the same as the SCSI address being used by the host program.

vCheck 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.

vIf 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.

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