Want to creare RAID 0+1 on EVA4400

[Aungshuman Paul]

Hi,

Can anyone help on following issue :

I want to create VRAID10 ( RAID 1+0). But I did not find any option on Command View EVA for create VRAID10.

Waiting for reply.

Aungshu

[Torsten.]

The vraid1 is what you are looking for.

[Aungshuman Paul]

But in the Quick Spec. See attached doc ( page 3) Vraid1, Vraid 0+1 mention separatly.

But in the Command View EVA we found only VRAID0, VRAID1, VRAID5 and VRAID6.

That made us confused. Any idea?

Aungshu

[Torsten.]

I don't know what should be the difference between raid1 and raid0+1 on an eva.

However, the specs are likely the only source that mentioned these raid levels, but I'm only aware of vraid0, vraid1, vraid5 and depending on FW level vraid6.

[Aungshuman Paul]

We create VRAID1. But customer refer us this document and want to create VRAID0+1.

But I did not find any option for create it.

So totally confused . And dont know how to convinced customer.

Aungshu

[Torsten. · Accepted solution]

In general a RAID1 is a mirrored disk, a RAID0+1 or RAID10 is usually a striped mirrored disk.


A vraid1 is always a striped mirrored disk (using all disks in a disk group), so you can compare to a RAID0+1.

[Steven Clementi]

vRAID6 may also be available on your 4400 depending upon the firmware version.

As stated.. vRAID1 on the EVA is effectively RAID0+1.


Steven

[Torsten.]

There are some documents about this on the web, for example

http://www2.openvms.org/kparris/eva_intro.ppt

(old but still valid)

or just search for something like

"eva distributed virtual raid"

[Aungshuman Paul]

Can we declare any hot spare disk in EVA?

[Torsten.]

No dedicated disk, but reserved space on all disks (protection level).