thanks for all the responses.
This is going to be DAS.
Thanks!
Naresh
On Mon, May 26, 2008 at 3:04 PM, Nikolay Ulyanitsky <lystor@xxxxxxxxxxxxx> wrote:
I prefer RAID10.On Mon, 2008-05-26 at 14:40 -0400, Mag Gam wrote:
> I have 12 750GB drive appliance from HP. I was wondering what is the
> best disk configuration? I suppose a large RAID5 would be bad since
> rebuilding would take too long. What do you recommend?
You can create 1 RAID-10 device with 12 * 750 Gb / 2 = 4.5 Tb size.
Also you can create 3 RAID-10 devices with 4 HDD per device. Each MD
device's size will be 3 * 750 / 2 = 1.125 Tb.
http://wiki.linuxquestions.org/wiki/RAID#RAID_10:_Striping_across_Mirror_sets :
"RAID 10 provides better performance than simple RAID 1 along with the
redundancy that simple RAID 0 lacks. It requires at least four drives to
implement and provides usable space equal to S*N/2 where 'S' is the size
of the smallest of the hard drives being used and 'N' is the number of
disks in the array. So, if I form a RAID 10 of four 10 GB disks, the
usable size of the array is 20 GB.
RAID 0+1 and RAID 10 are very similar but, by most measures of both
performance and redundancy, RAID 10 is considered to be preferable.
A RAID 10 can withstand the failure of a single drive (or multiple
drives, so long as they are NOT in the same mirror set)."
--
Nikolay Ulyanitsky <lystor@xxxxxxxxxxxxx>
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
_______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos
