raid10 array size limit?
langseth at meridian-enviro.com
Thu Jan 28 10:47:39 CST 2010
Sandro Possa wrote:
> Hi all,
> So, I was about to order a r710, and asked for 6 disks of 1TB each, to
> build a raid10 array with them.
> The odd part is that my sales rep told me that he couldnt sell me this
> config - 6x1TB disks in a raid10 array - because "the sum of all disks
> in a raid10 can be greater than 3.6TB". He said it twice, so I'm
> positive that he meant what he said. But, if I did a raid5, it was fine,
> I could use all the disks.
> After some googling I found nothing that could lead me to this
> information. Reading PERC 6/i and 6/E documentation I found nothing too.
> Do any of you ever heard about this?
I am certain this is wrong, I have a r710 (and a 2950) with 1tb disks
and raid 10 running right now. What your sales rep may have meant was
they cannot sell it with a RAID 10 config because they do not have a
disk image big enough for that. We got ours with RAID 5 and rebuilt.
One other thing to note you cannot create more than one Virtual disk
with raid10, so you will need to use GPT for partitioning.
More information about the Linux-PowerEdge