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Re: [Xen-users] How to get rid of IO-Bottleneck?
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| Subject: | Re: [Xen-users] How to get rid of IO-Bottleneck? |
| From: | Rob MacGregor <rob.macgregor@xxxxxxxxx> |
| Date: | Fri, 3 Apr 2009 08:09:08 +0100 |
| Delivery-date: | Fri, 03 Apr 2009 00:10:01 -0700 |
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2009/4/3 L.M.J <linuxmasterjedi@xxxxxxx>:
>
> First of all, I will buy another SATA disk to setup a RAID5 instead of
> RAID1, this will improve (a
> little bit) I/O performance or better, RAID0+1.
Note that RAID5 will have poorer write performance than RAID1. For a
3 disk array each write requires 2 reads, followed by the parity
calculations, then the write. Compare this to simply 2 write actions
required for RAID1.
--
Please keep list traffic on the list.
Rob MacGregor
Whoever fights monsters should see to it that in the process he
doesn't become a monster. Friedrich Nietzsche
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