I also agree. You want a raid controller that has it's own CPU. You want
hot spare, hot swapping, status lights, etc. to be handled by that
controller. If you have a hot spare you want automatic cutover to that
spare drive. You are not limited to SCSI with these controllers. Some
manufactures offer ide and sata versions. If you want hot swap
capability be sure to do your homework. Some drive hardware advertised
as hot-swap capable might not work properly with the controller you select.
Damon Estep wrote:
I agree, use either SCSI with hardware raid with a battery backed cache
or use sata/ide with linux software raid. Linux raid SCSI also works
well, but if you go for the scsi drives might as well get the controller
too.
The "firmware" raid on the cheap sata/ide cards have left me stranded
several times, I have had experiences were both an HP and Promise IDE
raid controller have SCRAMBLED both drives during a rebuild of a failed
drive. What is the point of RAID if you have to restore tapes anyways?
Or shitcan the onboard raid and get a real hardware raid controller
like
a 3ware card (if you are stuck on IDE / SATA.) Reduces complexity.
On Fri, Sep 09, 2005 at 09:23:44AM +0300, Tzafrir Cohen said:
On Fri, Sep 09, 2005 at 08:05:09AM +0200, Clive wrote:
Hi
I discovered that most onboard raid controllers are really
software
raid, and it uses the cpu to perform raid functions.
Also: in such a settings you can get comperable performance by using
Linux's built-in software raid. And for that you won't depend on
non-standard drivers from the vendor for that.
--
Tzafrir Cohen | [EMAIL PROTECTED] | VIM is
http://tzafrir.org.il | | a Mutt's
[EMAIL PROTECTED] | | best
ICQ# 16849755 | | friend
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