[CentOS] software raid
feizhou at graffiti.net
Fri Mar 30 06:13:57 UTC 2007
chrism at imntv.com wrote:
> Feizhou wrote:
>>>> argh...i missed the raid5 on 3ware part.
>>> Ah. No, I am using RAID0 since this is just scratch space for
>>> editing large uncompressed video files.
>> Man a 3ware for RAID0? :D
>> I cannot wait for port multiplexer support on libsata (or is it
>> libata?) in Centos 5. An elcheapo AHCI or whatever SATA controller +
>> Linux software raid will own 3ware cards on a price/performance basis :D
> An 8-port 9550SX card is only US$500. Why on earth would I mess around
> with software RAID when that card is going to make things a plug and
> play proposition? It just isn't worth the hassle.
Yes, a 3ware card + large case will always be cheaper than trying add
external storage via eSATA. I forgot the environment :P
As for hassle, I guess it is only a hassle on Linux...
>>> Disks are so cheap and high enough capacity now that I don't even
>>> bother with RAID5 anymore. I still don't think (even if I was using
>>> RAID5) that I would stray from the "vendor supported" ext3 filesystem.
>> Not when you need that fileserver to serve. I'd go with JFS. XFS is
>> too risky even if the code was not iffy. ext3 + 3ware RAID5 arrays is
>> that bad. IIRC XFS was somewhere like 4-5 times faster than ext3 and
>> no, i am not talking about 3ware 75xx/85xx boards. I am talking 3ware
>> 95xx boards with onboard RAM.
> If you need to serve files in an enterprise situation and you *cannot*
> afford a $500 RAID card, then I think you've got more pressing issues. :)
Er...I was referring to not using ext3 on a 500USD RAID card that it
does not gell with.
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