[CentOS] SATA RAID card recommendation?

Tue Mar 20 18:46:03 UTC 2007
Joshua Baker-LePain <jlb17 at duke.edu>

On Tue, 20 Mar 2007 at 11:20am, Florin Andrei wrote

> Analysis and reporting tool with a large MySQL backend. It also serves as a 
> transient backup server for that data. I need MySQL to _fly_ on that RAID 
> array, since the data set is pretty big.
> I wrote pretty much all software and did the DB schema, so I have true full 
> control over what's running on that machine.
> 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.

> I was wrong with the requirements, it's not PCI, it's PCI Express x16

For 3ware, then, that's 9590 or 9650.

> 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.

Erm, how many spindles can you fit in that 1U?  4 is the most I've seen.

Joshua Baker-LePain
Department of Biomedical Engineering
Duke University