How to verify disks write cache is switched off in fibre HSG80

From: Hannes Visagie <visagi_h_at_mtn.co.ug>
Date: Fri, 06 Apr 2001 09:54:22 +0300

Hi all

I need to verify that all the drives in a Fibre HSG80 write cache is
disabled {Write through}. In case of power failure, cache on HSG80 is
battery backed up, but actual disks are not. So there can be a potential
loss of data in extreme cases.

On normal SCSI controllers, this is usually easy to determine. Use some
SCSI command and switch on/off.

Please note that this is for the actual disks, not configured RAID, LUN's.

AFAIK Compaq drives are default write cache off.

Thanks
Received on Fri Apr 06 2001 - 06:57:30 NZST