topic Re: EVA disk migration in HPE EVA Storage

EVA disk migration

Fernando Boza — Mon, 14 May 2007 18:29:05 GMT

I have a EVA8000 with 104 FC disks of 146GB and 64 FATA disks of 300GB, I want respectively to change them by discs of 300GB FC and 500 GB FATA. Since I can do this with the smaller impact to the connected operating systems to this eva? As they are the alternatives?

Re: EVA disk migration

Peter Mattei — Tue, 15 May 2007 03:24:34 GMT

I see two ways ding that with EVA capabilities:

1. Fully online but takes time
Add the new drives to the respective Disk Group (DG).
After levelling has finsihed, remove first drive (offline via CV) wait for levelling to finish, remove the next one etc.

2. Requires reboot but is faster
Create new DGs with the new drives (needs enough free disk slots)
Unpresent "old" LUNs from server
Create Buiness Copy (Clone) of that LUN
Present "new" LUN and reboot
Do this for all LUNs in a DG

Cheers
Peter

Re: EVA disk migration

Fernando Boza — Tue, 15 May 2007 09:47:11 GMT

I can obtain a demo for BC.

Re: EVA disk migration

Peter Mattei — Tue, 15 May 2007 09:57:58 GMT

Yes you can get a BC trial version from your HP representative.
Ask your HP services or sales guy!

Cheers
Peter

Re: EVA disk migration

Fernando Boza — Tue, 15 May 2007 17:37:44 GMT

if I have 4 disk groups, I can at the same time make leveling in the 4 disk groups?

Re: EVA disk migration

Fernando Boza — Tue, 15 May 2007 17:44:42 GMT

if I have BC with license for 2TB, I can make copies of LUNs superior to that amount. or software me restricts it

Re: EVA disk migration

Peter Mattei — Wed, 16 May 2007 01:30:19 GMT

1. Levelling can occur in more than one DG.
I just tested it on my EVA5000 with 2 DG.
I ungrouped one disk each and grouped them again.
Both DG levelled at the same time.

2. With a 2TB BC license you can create clones and snaps of 2 TB source Vdisks/LUNs. The EVA will not allow you to cretae more at a time.
But remember: If a snapclone has finished you have 2 independend Vdisks and the license is freed up!

Cheers
Peter