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EVA info

Yashy
Occasional Advisor

EVA info

I am new to the storage and looking for some EVA related info. Kind of a quicksheet to create/modify luns, etc. Up to now I was using local disks directly attached to systems and I know LVM well.

Please help.

Thanx
Y
4 REPLIES
Rob Leadbeater
Honored Contributor

Re: EVA info

Hi,

You would probably be best reading the user guide for Command View EVA here:

http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01081029/c01081029.pdf

Hope this helps,

Regards,

Rob
Víctor Cespón
Honored Contributor

Re: EVA info

If you are going to switch from direct attached to SAN storage the most important things are, I think:

- The LUNs on EVA can be created on vraid 0, 1 and 5, the idea is similar to RAID 0, 1 and 5, but the protection against disk failures is more complex.
- You must create an entry for each host on Command View, listing the WWN of the FC adapters it has, and the OS it is running.
- You must pressent a LUN to a host so it can see it.
- Since an EVA has several ports connected to the SAN, and a host typically has 2 FC adapters, the LUN will be seen though several (4 or 8) paths, and will appear as several devices. This needs to be taken care off by multipath software like Securepath, or any other supported sulution.
- The EVA has the possibility of making snapshots, snapclones and mirrorclones of disks, take a look at those features and consider if would be worth to purchase a license.
Yashy
Occasional Advisor

Re: EVA info

Hi,
Actually I am looking for info from the EVA side.
-How to create a LUN
-Prerequisites or steps to be taken before creating a LUN, etc.
-Any info which will ease doing the above

From OS level, I am pretty sure I can handle it.

Thanks.
Víctor Cespón
Honored Contributor

Re: EVA info

The EVA is controlled through a program called Command View, you should have it installed already. In this program you must create the disk groups, vdisks and hosts. Then you present a disk to a host and the OS will see it a a SCSI disk like any other.

Download Command View user guide here:
http://h10032.www1.hp.com/ctg/Manual/c00605846.pdf
or
http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01081029/c01081029.pdf