[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: K8S Pro (S2882UG3NR) + Sil 3114 (Raid 1) + Sarge

On Tue, Oct 26, 2004 at 10:56:59PM -0500, Ron Johnson wrote:
> > Well software raid is defined as raid that does the calculations in
> > software (on your cpu), while hardware raid does the calculations using
> > custom circuitry or a dedicated cpu running some software (firmware).
> > 
> > If I have to waste cpu time on raid, I at least want to be able to see
> > the code running on my cpu and perhaps be able to improve on it.  That
> > is the difference.
> Ummm, but with true h/w RAID, you are *not* wasting main CPU time
> on it.  On "enterprise systems", the SCSI card itself doesn't even 
> know that it's talking to a RAID set, since the SCSI cards connect
> to a "RAID controller", which the SCSI disks also plug into.

Exactly.  Hardware raid is great.  It's the proprietary cards that use
software raid I don't like wasting my cpu on.

Len Sorensen

Reply to: