Re: Hardware RAID controllers

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On Mon, Feb 04, 2002 at 11:30:24AM -0800, Micah Anderson wrote:
> I thought recovery/resync takes quite a bit of CPU overhead until it
> is finished?  Even though this will be a SCSI system and a SCSI
> controller will be needed, and this will only be RAID 0 or 0+1 (can
> software RAID even do RAID 10 or 0+1? I don't know if it can),

Oh yea it can.  Been running it on a box here for well over a year (two
perhaps?) and it's been working great.

> I think
> that there is still some overhead incurred on the system by running
> software raid, perhaps it is slight, but on a system that is going to
> be a database server and needs to be as quick as possible, slimming
> down and trimming out the excess is always a good thing.

Well, sure there's some miniscule effect on the CPU.  But really, is some
negligible percent of CPU time worth the cost of a hardware RAID system?

Ross Vandegrift
ross@willow.seitz.com
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