Re: nVidia or software RAID 5?

On Mon, 2007-05-21 at 22:19 -0700, Dawning Sky wrote:
Hi,

I'm building a new server with Asus M2N-SLI Deluxe motherboard, with
comes with the nVidia MediaShield Raid support. I'm wondering whether
I should use this function and setup my array in the BIOS, or I should
use the Linux software RAID and build the array directly from the
drives. Please advice.

My setup: 1 300GB SATA drive as the system drive. 4 500GB SATA
drives to build a RAID 5. I also plan to further partition the RAID 5
array, probably on top of LVM, to use as /home and some of /var.

Thanks,

DS


Give the fact the most (if not all) on-board SATA RAIDs are actually
glorified BIOS based software RAID solutions I see little reason not to
use software RAID.
Unlike the nVidia RAID, Linux' software RAID:
A. ... can use partition instead of full drives (In your case: 5x300GB
in RAID5/md0 and 4x200GB in RAID/md1)
B. ... can be moved to a different. Just connect the driver to a new
machine, no matter which SATA controller is being used, and it'll work
out of the box.
C. ... scales much better, as the CPU power increases.

- Gilboa

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