brently at bjwcs.com
Thu Mar 27 09:32:33 PST 2003
> On 27-Mar-2003, Francisco J Reyes wrote message "Re: Three
> > Highly recommend you go with Raid 10 and not 5.
> I 2nd that. Raid 5 offers very very POOR performance. While
> it sucks up the most diskspace, Raid 10 is maximum
> performance and great fault tolerance. For an i/o intensive
> service like a mail server or something, raid 5 will
> eventually cause your server to get crushed over time as the
> number of users increases. The you're forced to convert to
> raid 10. We learnt this the hard way. ;)
Normally, I'd also agree with this. However, a friend of mine built a NAS
using the 3ware card and 11 200gb WD drives in a RAID5 config and can
sustain 85mbit/s *write* (the test was several hours long). I suspect it
would do even more with a gig-E card.
Of course, that test would be fairly meaningless when you're doing something
like a mail spool, but it proves the application should drive the method.
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