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Re: [rhelv5-list] MegaRAID card performance

On 12/5/07, Erik Bussink <mailinglist bussink ch> wrote:
On Wed, 2007-12-05 at 22:17 +1100, Karl Latiss wrote:
> I'm looking for an 8 port SATA RAID card and looking at some of the LSI
> MegRAID SAS/SATA products. Does anyone have any experience to share with
> these cards?

I've used a 4 Port LSI MegaRAID 150-4 without issues under RHEL4 &
RHEL5. But I recommend that you think about a SAS RAID Controller. SAS
RAID Controllers can in most case handle SAS drives as well as SATA
drives (SATA specification being a subset of SAS specification, and
using the same cabling system).

Also make sure that you're RAID Card can handle the size of volumes you

I've found that the HP SmartArray P600 (PCI-X 133Mhz) cannot handle
volumes larger than 2TB. So I could not create a RAID5 using 3x750GB

I'm now using an HP SmartArray P800, using SAS Drives for the operating
system, and SATA Drivers for large-data storage.

In addition, I really like the HP SmartArray controller shell tools to
see the status of my RAIDs.
3ware has excellent raid controllers too, best of all the driver is already in the kernel.  The LSI drivers might be there already too, not sure.  I wouldn't want to use third party drivers anymore, now that rhel5 requires the module to build exactly to the kernel revision, you'd have a hard time ever updating the kernel.


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