[CentOS] SATA RAID card recommendation?

John R Pierce pierce at hogranch.com
Tue Mar 20 18:59:41 UTC 2007


Joshua Baker-LePain wrote:
> On Tue, 20 Mar 2007 at 11:20am, Florin Andrei wrote
>
>> I think I can go with the "throw more hardware (bigger disks) at the 
>> problem" approach and use RAID1 instead of RAID5. That should give a 
>> boost to the read performance, in theory.
>> I need to do some tests and figure out what works best in this 
>> particular case.
>
> IMO, you do *not* want RAID5 there.  RAID10 is likely to work best.
>

With todays larger drives, and the amount of time raid5 rebuilds can 
take leaving you exposed to double failure, and the price of drives, I'm 
not sure there's _ANY_ application anymore for which raid5 is 
appropriate.   And absolutely for sure, anything involving SQL databases 
should be raid1/10...


>> There's not much room in the system, it's a 1U. I think I can fit a 
>> full-height card in it, but it must not be too bulky.


the cache battery backup option might be tough to squeeze into a 1U.



More information about the CentOS mailing list