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EVA Business Copy - Snapshot to different disk group

Brad Ward_2
Occasional Visitor

EVA Business Copy - Snapshot to different disk group

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!
8 REPLIES
Stephen Kebbell
Honored Contributor

Re: EVA Business Copy - Snapshot to different disk group

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
Brad Ward_2
Occasional Visitor

Re: EVA Business Copy - Snapshot to different disk group

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.
Stephen Kebbell
Honored Contributor

Re: EVA Business Copy - Snapshot to different disk group

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
DragomirAtea
Trusted Contributor

Re: EVA Business Copy - Snapshot to different disk group

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
Brad Ward_2
Occasional Visitor

Re: EVA Business Copy - Snapshot to different disk group

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.
Thorsten Herd
Occasional Advisor

Re: EVA Business Copy - Snapshot to different disk group

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.

Dave La Mar
Honored Contributor

Re: EVA Business Copy - Snapshot to different disk group

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
"I'm not dumb. I just have a command of thoroughly useless information."
Brad Ward_2
Occasional Visitor

Re: EVA Business Copy - Snapshot to different disk group

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.