On Tue, Sep 30, 2008 at 7:30 PM, Ahmed Kamal < [EMAIL PROTECTED]> wrote:
> > >> Well, if you can probably afford more SATA drives for the purchase >> price, you can put them in a striped-mirror set up, and that may help >> things. If your disks are cheap you can afford to buy more of them >> (space, heat, and power not withstanding). >> > > Hmm, that's actually cool ! > If I configure the system with > > 10 x 400G 10k rpm disk == cost ==> 13k$ > 10 x 1TB SATA 7200 == cost ==> 9k$ > > Always assuming 2 spare disks, and Using the sata disks, I would configure > them in raid1 mirror (raid6 for the 400G), Besides being cheaper, I would > get more useable space (4TB vs 2.4TB), Better performance of raid1 (right?), > and better data reliability ?? (don't really know about that one) ? > > Is this a recommended setup ? It looks too good to be true ? > I *HIGHLY* doubt you'll see better performance out of the SATA, but it is possible. You don't need 2 spares with SAS, 1 is more than enough with that few disks. I'd suggest doing RAID-Z (raid-5) as well if you've only got 9 data disks. 8+1 is more than acceptable with SAS drives. --Tim
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