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SCSI HA number changes on server reboot

By Darren Hancock ·
Server: Compaq ML370 Tower Server - PIII/1.13Ghz/256MB

SCSI devices (dual channel): 2 HDD's (port 2), HP DAT internal tape drive (port 1)

Novell Netware 4.11, Veritas Backup Exec 8.5

Problem: Backup Exec does not recognize tape drive partition when server is rebooted. Before reboot, Hardware Adapter # is 0. (HA:0 ID:1 LUN:0)After reboot, HA # is 1...(HA:1 ID:1 LUN:0)? Note: when all devices are on same SCSI bus, no problems (except HP/Compaq doesn't support it if it fails, which it has for me... something about data collisions and bad SCSI commands with multiple HDD's on same bus).

Any thought's would be greastly appreciated. I need a solution as we have 10 servers with the same SCSI configs, and 2 tape drives have already failed!!! Help.

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by djent In reply to SCSI HA number changes on ...

You don't mention what the SCSI controller brand is. If Compaq cant or wont provide help, get an Adaptec controller(single or dual channel) as needed and disable the onboard controller. There is no reason HBA # should change, the lower # is polled first and the boot HD should reside there. The primary problem with integrated controllers is dependence on the OEM for support (Compaq) and it is often absent or deficiant.

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