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RAID Configuration

Posted: Thu Jun 06, 2013 9:37 pm
by ctcline
Hello,

I am setting up a new SW server. I will have 12 4TB drives. http://www.seagate.com/internal-hard-dr ... y-3-5-hdd/

I plan to use RAID 10, but is it better to have all these drives in one RAID volume or break them down into smaller volumes?

Thanks,
Chris

Re: RAID Configuration

Posted: Fri Jun 07, 2013 12:08 am
by anton (staff)
Go OBR10 (One Big RAID10). Reason is simple: with one RAID set you basically do aggregate all IOPS from all the spindles into one virtual volume. So
any aligned I/O will touch all of the drives providing you the best match performance. With split drive sets you'll end with so-called "islands of storage" basically
stealing IOPS from each one and being difficult to manage.
ctcline wrote:Hello,

I am setting up a new SW server. I will have 12 4TB drives. http://www.seagate.com/internal-hard-dr ... y-3-5-hdd/

I plan to use RAID 10, but is it better to have all these drives in one RAID volume or break them down into smaller volumes?

Thanks,
Chris

Re: RAID Configuration

Posted: Fri Jun 07, 2013 12:32 am
by ctcline
Thanks Anton!

Re: RAID Configuration

Posted: Fri Jun 07, 2013 3:08 pm
by anton (staff)
You're welcomed :) Please share the numbers you'd manage to sqeeze from your config. Thank you!