topic Re: EVA3000: RAID question in HPE EVA Storage

EVA3000: RAID question

Fabrizio Sinopoli — Mon, 05 Mar 2007 08:36:07 GMT

Hello
I have one EVA3000 storage. I want use 21 physical disks.
Can I create only one Disk Group and then create some RAID1 vdisk and other RAID5 vdisk?
Or I must create two different Disk Groups?

Re: EVA3000: RAID question

Luk Vandenbussche — Mon, 05 Mar 2007 08:39:47 GMT

Hi,

In one diskgroup can you create individual luns with VRAID5, VRAID1 or VRAID0 (not advisable) protection.

So the answer is : you can do it in one diskgroup.

Good Luck

Re: EVA3000: RAID question

Ivan Ferreira — Mon, 05 Mar 2007 10:16:17 GMT

You create one disk group and you can create VRAID1 and VRAID5 on the same disk group.

You must be aware that when a disk fails, it affects to all RAIDs created on the same disk group.

Re: EVA3000: RAID question

Sheldon Smith — Tue, 06 Mar 2007 08:23:57 GMT

Note that only an even number of disks (in your case, 20) will be used for the VRAID1 VDisks. Which is why setting the virtual hot-spare parameter for the disk group to single masks out TWO physical disks-worth of storage space, and setting to double masks out FOUR.
Personally, I'd recommend adding the 22nd disk to balance the VDISK utilization across the disks in the group.

Re: EVA3000: RAID question

Fabrizio Sinopoli — Tue, 06 Mar 2007 08:56:15 GMT

It's not clear to me.... I want to create some VRAID1 vdisks and other VRAID5 vdisks using 21 physical disks. It's not possible???

Re: EVA3000: RAID question

Jonathan Harris_3 — Tue, 06 Mar 2007 10:44:08 GMT

Yes, it's possible.

Re: EVA3000: RAID question

pasquino bocci_1 — Tue, 06 Mar 2007 16:50:31 GMT

Hi fabrizio,

What do you think about a training in HP?
Or perhaps just read the manuals or best practices!!!

Re: EVA3000: RAID question

Fabrizio Sinopoli — Thu, 08 Mar 2007 08:30:19 GMT

Activity completed as your replies. Thanks