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Sean Cook wrote: |
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> This is not necessarily the case, typically if you are CPU bound then |
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> the above statement is true. If you are IO bound, then software raid |
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> offers, overall, better throughput to the disk and allows for more |
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> flexibility. |
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> |
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> Back in the day... we were running the LSI MegaRAID controllers with |
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> RAID 1 on 9gig SCSI disks, we were choking our application |
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> (mysql/mod_perl) we took the MegaRAID controller out and performance |
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> increased by about 25%. (note: this is a real world situation) |
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> |
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|
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Then you my friend had some seriously broken hardware. I've never seen |
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anything get slower by moving to dedicated RAID card and usually it got |
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2-3x faster due to having a dedicated local cache on the card. |
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|
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kashani |
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-- |
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