Dieter.Nuetzel@hamburg.de said:
> How do you checked it?
I used sginfo from Doug Gilbert's sg utilities (http://www.torque.net/sg)
The version was sg3_utils-0.98
Dieter.Nuetzel@hamburg.de said:
> But when I use "scsi-config" I get under "Cache Control Page": Read
> cache enabled: Yes Write cache enabled: No
I believe write cache enabled is the state of the WCE bit and read cache
enabled is the inverse of the RCD bit, so you have a write through cache.
I think that notwithstanding the spec, most drives are write through (purely
because of the safety aspect). I suspect certain manufacturers use write back
caching to try to improve performance figures (at the expense of safety).
James
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This archive was generated by hypermail 2b29 : Thu Mar 07 2002 - 21:00:16 EST