EVA4000 problem

[aneez]

hi all

one of my customer accidently unintialized the eva 4000. now booth of the controller got intialised. now its not showing any lun and gropus. is any way to retrieve the controller configuration. please help

anee

[Rob Leadbeater]

Hi Anee,

The only way you could recover the configuration would be if the configuration has been captured previously with SSSU.

Even if the configuration could be recovered, the data on the array will have been erased.

Hopefully your customer has good backup tapes ...

Regards,

Rob

[aneez]

hi
is anyway to tell me how its happened because its having redundant contoller ?

in my command view eva its showing the controller is intializing

how it can happen

thanks in advance


aneez

[Rob Leadbeater · Accepted solution]

Hi,

Are you aware of the actual sequence of events ?

It's difficult for someone to accidentally uninitialize an EVA as Command View gives you at least two, "Are you really sure you want to do this ?" messages...

Maybe what happened is that they've had a power outage and the controllers got powered up before the disks. In that situation the controllers wouldn't be able to read their configuration off the disks, and may appear to be uninitialized.

Try powering the disk shelves and controllers off.

Then power up the disk shelves and wait a few minutes - don't worry if the disk in bay one of each shelf appears to have failed - that's normal.

Then power up the top controller, wait 10-15 seconds, then power up the bottom controller.

Hopefully that will get things going.

Regards,

Rob

[aneez]

Hi

i tried like as you told when i am trying like that in eva controller its asking the wwn name. what may be the reason for this ?

thanks
aneez

[Luk Vandenbussche]

You have to reinitialize your controller.

There is normally a label with the WWN and checksum next to the controllers

If you don't have a backup of the config with SSSU, you have to reinitialize the EVA4000 and restore al the data

Good Luck

[Rob Leadbeater]

Hi,

The EVA will prompt for the WWN if it has been powered down when uninitialized.

Therefore it sounds very much as though the configuration and data have been lost.

Cheers,

Rob

[Uwe Zessin]

> is anyway to tell me how its happened because its having redundant contoller

If the customer has uninitialized (= destroyed) the system, all meta-data was erased from the disks. There is no configuration kept on a redundant controller.

Watch out! The EVA terminology is a bit confused. Depending whre you look, sometimes 'uninitializing' and 'initializing' means the thing: the whole configuration is destroyed.

[aneez]

hi
is anyway to get the logs what happened exactly?

is any utility from hp to retreive the data from the disks. its very very critical data.
so if any idea you have please let me know.

i am waiting for your valuable replies


thanks for your quick response

Aneez

[Rob Leadbeater]

Hi,

I think you'll find copies of the EVA events are also sent to the Windows Event Log on the machine running Command View EVA.

That *might* have details of what happened...

I'm not aware of any utilities from HP to recover an EVA, however you could always try logging a fault call and see what they say...

Cheers,

Rob

[Rob Leadbeater]

..but of course as "its very very critical data" there will be copies on tape to restore from... hopefully !

Best of luck,

Rob

[aneez]

hi

data lost hp can't help us for the dat recovery.

thanks for the replies

Aneez

[aneez]

close the thread

thanks

[Mark...]

Hi,
Agree with all above, if it's been initialized/unintialized that's it really.
If you are running command view 6.x then you could have a look at the logs to see who/when it was un/initialized but this is nothing to do with getting the data back, you need full backups.
The default location for the log files are on the management server are:
C:\Program Files\Compaq\SANworks\Element Manager for StorageWorks HSV\Bridge\logs

With V6 cmd view it would also be hard to have an accident to unitialize the EVA as you have to manually type in "YES" twice along with a text explination to say that you will loose data. Earlier command view versions and its just about 3/4 rambo clicks and its all gone.

For future reference you may wish to consider upgrading to cmd vw v6 as it has a bit of added security as well as setting up the password security between the array & cmd vw. This, however, would not stop someone from uninitializing the EVA from the front control panel! I "pressume" that the EVA in in a secure environment in the first place ??? If you do go to cmd vw 6 then make sure that you have a supported version of XCS code as well.

Good luck with the restore.

Mark...