Re: Adventures in Server restore

Sjai,

Thanks for that information. Very useful.

Andy

"Shai Netanel" <ShaiNetanel@xxxxxxxxx> wrote in message
news:34579114-676B-443D-8B74-F1384478E00F@xxxxxxxxxxxxxxxx
> Hello
> I see this problem before..
> It is hardware problem; it can be disk problem or Raid / SCSI controller
> problem
> SP1 for exchange change the db jet and should fix this problem
> (After installing SP1 you need to run eseutil /d)
>
> http://www.kbalertz.com/kb_Q314917.aspx
>
> Regards,
> Shai Netanel
>
> --
>
>
>
>
> "Andy Cobley" wrote:
>
>> I thought I'd pass on my experience in bringing back an exchange server
>> that has gone bad. Basically, although I had done some test backup and
>> restore exercises, a real restore turned out to be far from easy.
>>
>> Basically On Friday night (around midnight) something happened to
>> corrupt
>> the priv.edb. I'm not sure what happened (but a online backup was going
>> on)
>> I started to get the following messages in the event viewer.
>>
>> "Information Store (1932) First Storage Group: The database page read
>> from
>> the file "F:\mdbdata\priv1.edb" at offset 6660096 (0x000000000065a000)
>> for
>> 4096 (0x00001000) bytes failed verification due to a page checksum
>> mismatch.
>> The expected checksum was 3713556033693036075 (0x3389338991c82e2b) and
>> the
>> actual checksum was 7734955069946726443 (0x6b5814a791c8082b). The read
>> operation will fail with error -1018 (0xfffffc06). If this condition
>> persists then please restore the database from a previous backup. This
>> problem is likely due to faulty hardware. Please contact your hardware
>> vendor for further assistance diagnosing the problem. "
>>
>> The mail service did continue to run though.
>>
>> On Saturday whilst trying to do a RSG restore from backups things went
>> from
>> bad to worse and eventually the server crashed and continued to crash
>> with
>> random errors in the event log. I thought it may be a virus, but a
>> check
>> revealed not. I did manage to use Exmerge to extract to PST the users
>> mailboxes.
>>
>> The server continues to crash, sometimes not letting me log in. I
>> decided a
>> Dialtone recovery would be best. However I couldn't create a new blank
>> database. Thanks to Rich Matheisen for pointing out that to create the
>> new
>> dialtone database I needed to move the log files to a new location,
>> essentially deleting them form the server. So now I've got a diatone
>> database and people can send and receive mail.
>>
>> Next up, use Exmerge to bring back the pst files from Saturday. Bad
>> move,
>> one of them must have contained the data that was corrupting the database
>> and the server started crashing again with blue screen dumps. I have to
>> admit I was losing what little hair I had left. For good measure the IIS
>> file MetaBase.xml had become corrupt (presumably because of the crashes)
>> causing Exchange services not to start correctly. This was restored from
>> a
>> system backup.
>>
>> The only solution was to disable the exchange services to get the server
>> stable. Then create a new dialtone database (thus losing any mail
>> received
>> this morning, a backup couldn't be created because the server was only
>> up
>> for a couple of minutes at a time.) This has now allowed me to get the
>> server running again. I'm going to run it for a day like this just to
>> confirm it's stable.
>>
>> However I can't restore from the pst files on Saturday. So I'm going to
>> have to go back to older backup files to get the users mail back.
>>
>> Andy C
>>
>>
>>
>>


.

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