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* [9fans] disk mirroring
@ 2001-08-31 22:46 geoff
  2001-09-01  6:22 ` William K. Josephson
  0 siblings, 1 reply; 2+ messages in thread
From: geoff @ 2001-08-31 22:46 UTC (permalink / raw)
  To: 9fans

Does anybody have experience with the fancier Promis IDE controllers?
One line (FastTrak?) claims to implement drive mirroring, but I
don't know if this requires OS intervention, or if it just works
once you configure it via the Promis BIOS.

I've just got a version of nemo's IDE file server up and running
on a system with 2 20GB IDE drives.  I've added optional mirroring
and that seems to work (I haven't yet done a thorough verification)
at a performance penalty of 8-9% real time.  I just copied 275MB into
the main file system; so far everything seems to be working right.


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [9fans] disk mirroring
  2001-08-31 22:46 [9fans] disk mirroring geoff
@ 2001-09-01  6:22 ` William K. Josephson
  0 siblings, 0 replies; 2+ messages in thread
From: William K. Josephson @ 2001-09-01  6:22 UTC (permalink / raw)
  To: 9fans

On Fri, Aug 31, 2001 at 03:46:45PM -0700, geoff@collyer.net wrote:
> Does anybody have experience with the fancier Promis IDE controllers?
> One line (FastTrak?) claims to implement drive mirroring, but I
> don't know if this requires OS intervention, or if it just works
> once you configure it via the Promis BIOS.

The version with which I am familiar require configuration through the
BIOS and an appropriate driver.  I think both FreeBSD and Linux have a
driver now.

 -WJ




^ permalink raw reply	[flat|nested] 2+ messages in thread

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2001-08-31 22:46 [9fans] disk mirroring geoff
2001-09-01  6:22 ` William K. Josephson

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