[CentOS] 8-15 TB storage: any recommendations?

James A. Peltier jpeltier at fas.sfu.ca
Wed Jan 6 23:15:31 UTC 2010

On Wed, 6 Jan 2010, Hakan Koseoglu wrote:

> Seconded. Also you can chain a couple of MD1000s at the back of the
> MD3000 to get even more storage over SAS. We have a number of those
> with the upstream OS installed but usually a single MD3000 is enough
> for what we use them for (mainly Oracle DB server or VMWare hosts). We
> tend to split the storage between two nodes and then do OCFS2.

For the cost/performance they're not too bad a unit.  We grow by about 
45TB per year of Medical Imaging Data.  For each 15TB we buy a new head 
node, we're up to three now, so performance to our cluster just gets 
better as we go.  These are all NFS/CIFS servers on a Jumbo Frame ethernet 
network.  I originally had difficulty with the MD3000 talking multipath to 
the units and the only way I could get it to work reliably in an 
active/active configuration was to use the provided mptsas driver which 
was a cinch to install.

This was not the case with the Solaris hosts as they didn't talk RAID and 
ZFS with Solaris Multi-Pathing had built in support for the devices.

James A. Peltier
Systems Analyst (FASNet), VIVARIUM Technical Director
HPC Coordinator
Simon Fraser University - Burnaby Campus
Phone   : 778-782-6573
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E-Mail  : jpeltier at sfu.ca
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