EVA Test Plans

[SGrimes07]

One of my customers is going to be moving disks between two EVA's. I am trying to find some test plans that can be followed to prove that the EVA is working OK once the disks have been transferred. Does anybody have such things?

The customer wants to make sure that they test that data can be accessed etc, but rather then just wite down 2 or 3 test scenarios, I am looking for a series of tests that could be carried otu.

Any help greatfully received.

Rgds

Sean

[Ivan Ferreira]

>>> Moving disks between two EVA's.

How many disks? All?

>>> between two EVA's.

The other eva already has disks configured in a disk group?

>>> prove that the EVA is working OK

What do you mean by working OK? current data accesible? old data accesible?

[SGrimes07]

I am moving 56 x 300GB disks fom the EVA3000 to the EVA6000 and then adding an additional 28 disks to increase capacity.

I want to be able to test/prove that the data residing on the 'old' disks can be accessed wehn they are in the new EVA6000, and that the EVA6000 can also see the new disks, LUN's etc.

I am moving the drive enclosures as well as the disks, so therefore the data should be in tact and it should just be a case of the EVA6000 controllers recognising that there are disks installed with data on them.

[pswma2]

Hi Sean,
are you sure that you are "moving the drive enclosures as well as the disks", bcs. the electronic in enclosures - EMUs, I/O modules are not compatible btw. EVA-3000 and EVA-6000 ?
If you already have your EVA-6000 and new 28 disks it would be possible to present both storages to your servers (be aware about the multi-pathing issue - Secure Path etc.) and just mirror some of your vdisks from old storage to new. Then ungroup some disks in EVA-3K and move them from EVA-3K to EVA-6K.

Your EVA-3000 is 2C4D. Is your EVA-6000 2C8D?

[Mark...]

Hi,
Hmmm, if you move the disks/enclosures from one EVA to another EVA it's just not that simple!
First, as far as I am aware and as long as I read your note correctly, you will not be able to do what you have suggested.

As the previous noter mentioned the i/o & emu modules may well be incompatable. This depends on the revisions. Another reason is metadata on the disks.
What version vcs code ??
What version xcs code ??
The code of the disks may well have to be upgraded as well.
Another [very probable] problem is that if we assume that that the physical transfer works OK [and that you have moved disks/shelves while both systems are completely powered off] then the chances are, at minimum, that there will be a quorum disk in the disks that you have transferred from one system to another. Again, assuming that the ctrl reads this, it will ask you to pick a config. Either way whichever one you pick will be 50% wrong !! & you will loose data.
If you transfer the "old disks/shelves" into the "new system" then the new ctrl while it is powered on then it will just see them as new disks. Bye bye data !

There are two or three ways round this [one mentioned in previous note]& I am sure it has probably been covered in other itrc notes so it would be worth a search of the itrc for additional info.

I've never tried what you suggested but if it works I would be most interested to know.

Bottom line, you need to plan what you wish to do, read up migration notes material before you do it.

This would be a place to start:
http://h18006.www1.hp.com/products/storageworks/eva/index.html
as you may wish to involve your local HP services to assist with the migration.

Mark...

[SGrimes07]

Just to make everyone aware, it is possible to move the drive enclosures from the EVA3000 to the EVA6000 and have the controllers recognise the disks without any loss of data.

I also moved just the disks from the EVA3000 to another EVA6000 and they were recognised in the EVA6000 without any reconfiguration or loss of data.

My 'get out of jail card' was that I had another EVA6000 that I had replicated data to just in case, but it was not needed as the disks came straight up when the EVA came back on line.

Sean

[Del_3]

I concur. We have moved shelves from an EVA 5000 to an EVA 8000 with no data loss. I suggest upgrading all VCS and disk firmware to the highest relative level before the transfer.
Of course we had a verified backup of all data before the move.