Re: RAID5 slowness (how to fix?)

On Mon, 24 Apr 2006 14:37:15 -0400, John-Paul Stewart wrote:

What kind of network and what kind of backup software are you using?

It is a Gig-E connection between the backed-up machine and the destination
machine, so hopefully this is not a problem.

The backup software we are using is commercial, from Symantec if I'm not
mistaken. It does support incremental backups but our IT guy (the one
that's not me) would rather not do that for various reasons. Anyway that's
his choice but it is true that the full backups are taking too long.

That's awfully slow indeed. So the network isn't the only problem. You
definately need each drive to be master on its own IDE channel.

Sounds like there is some consensus around this point.

At least it seems that turning on DMA also helped a fair bit. BTW I hope
it is easy to move the raid disks to another PCI IDE Controller, do I have
to run any commands for this? Are they documented somewhere?


.

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