topic Re: EVA Business Copy - Snapshot to different disk group in Disk Enclosures

EVA Business Copy - Snapshot to different disk group

Brad Ward_2 — Thu, 12 May 2005 07:21:59 GMT

We just installed FATA drives into our EVA 5000 to SNAP from the production disk to the cheaper FATA.

Can someone direct me to the documentation that describes how to direct the Snap to a different disk group?

We are running the version that supports snaps to different disk groups but I'm unable to get it to work.

Thanks!

Re: EVA Business Copy - Snapshot to different disk group

Stephen Kebbell — Thu, 12 May 2005 09:44:30 GMT

Hi,

you can Snapclone to a different disk group. Not snapshot. When you are creating the Snapclone, you should be able to specify what disk group to use.

Regards,
Stephen

Re: EVA Business Copy - Snapshot to different disk group

Brad Ward_2 — Thu, 12 May 2005 09:56:12 GMT

Can you tell me what "operations" and order I would use to run the snap clone?

I tried using:
Snap unit ....
Normalize Unit ....
Set Diskgroup....

But get validation errors. Our current demand allocated snaps are running fine using...

Snap unit...
Normalize Unit...
Mount Unit...

Thanks.

Re: EVA Business Copy - Snapshot to different disk group

Stephen Kebbell — Thu, 12 May 2005 10:26:37 GMT

Hi,

it's been a while since I used Business Copy, so I'm probably a bit rusty. And the downloadable PDFs are not great. But I would guess using the "Snap" command is the problem. I'd say that Snap only creates snapshots. Look through the online help for the Snapclone command. It will create a completely new Vdisk and you should be able to specify the disk group.

Regards,
Stephen

Re: EVA Business Copy - Snapshot to different disk group

DragomirAtea — Fri, 13 May 2005 01:59:46 GMT

Hi!

Stephen is correct.

A snapshot is located within the Vdiskfamily.

A snapclone can be placed in another diskgroup, sp you should gp with the snapclone instead...

Regards
Dragomir Zekic

Re: EVA Business Copy - Snapshot to different disk group

Brad Ward_2 — Fri, 13 May 2005 06:32:52 GMT

Thanks everyone for their replies. What I really need now though are the order of the commands that I will need after the snapclone.

The documentation isn't very informative.

Re: EVA Business Copy - Snapshot to different disk group

Thorsten Herd — Fri, 13 May 2005 08:13:36 GMT

Brad,

here is the sequence we use

set diskgroup (this is the diskgroup where you wnat the clones)
snap unit or device with type snapclone

more snaps possibly or wait for normalization

mount commands

the key is the set diskgroup before the snap clone command. There is no option I know of to set the diskgroup within the snap command , at least not in BC2.3.

Re: EVA Business Copy - Snapshot to different disk group

Dave La Mar — Fri, 13 May 2005 11:42:13 GMT

Brad-
Imagine that. We got our EVA two weeks ago and have been creating scripts to just what you ask.
Attached is the HP Doc for the commands.
and a sample file for the following command:

/sbin/sssu "FILE bin/check_RI_fast01"

Best of luck.

Regards,

dl

Re: EVA Business Copy - Snapshot to different disk group

Brad Ward_2 — Fri, 13 May 2005 11:51:26 GMT

Thanks Dave.

Unfortunately, it looks like you are using HP-UX which is a little different when snapping to Windows.

I have, however, figured out my problem. The solution is as follows.

SET DISKGROUP XXX_SAN_1 "\Disk Groups\SNAP"
SNAP UNIT XXX_SAN_1 "\Virtual Disks\Server\virtual disk to snap\ACTIVE" $BCV1 SNAPCLONE_HSV
NORMALIZE UNIT XXX_SAN_1 "\Virtual Disks\virtual disk to snap\ACTIVE"
MOUNT UNIT SS $BCV1 server to present snap N/A N/A 1 Q: (drive letter to present as)

Thanks everyone for their input. I used information from everyone to figure it out.