simes at bpfh.net
Thu Nov 1 17:21:08 GMT 2007
On Thu, Nov 01, 2007 at 03:47:33PM +0000, Dirk Koopman wrote:
>IIRC the results were: software raid in SCSI nearly 5 times as fast,
>ditto IDE 2.5 times as fast as the adaptec doing its hardware raid 0.
For RAID0, RAID1 or combinations of these I'd use software RAID; after all
its just data shuffling when it comes down to it.
However for RAID5 or RAID6 I'd always go for hardware RAID; perferably with
battery-backed cache. In reality going for an external array tends to be the
better thing to do here. So long as you get decent ones which don't do
o Reseting their SCSI bus randomly
o Decide that hotswap controllers doesn't actually really mean that
o Burst into flames
The other option is the SunFire X4500 server running Solaris and ZFS. 24Tb of
disk in 4U is fairly good; you'll loose a bit to RAIDZ and moreso if you use
the mirrored version.
Simon the stressed http://www.bpfh.net/ simes at bpfh.net
Chocolate is *not* a substitute for sleep
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