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Strange things happened in migration

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Strange things happened in migration - 15.Jan.2005 7:07:00 PM   


Posts: 16
Joined: 25.May2004
From: Finland
Status: offline

I posted this topic to E55 General but did not get any replies. What about here?

Strange things happened last saturday when I did an intra-site migration from E55 to E2k3.

Environment was really simple. One Win 2000 AD (SP3 and SP4) and one Exchange 5.5 server (SP4). Before I started, I asked about backups and answer was: "We took full backup last night and now we have stopped inbound mail flow."

I did all the things as usually and everything appeared to work OK. I moved a test mailbox and it worked well. Then I upgraded ADC and E2k3 to SP1 and customer installed a virus software to new server. When it was time to move rest of the mailboxes to new system I noticed that about half of the E55 mailboxes had disappeared and corresponding CRs had appeared to E55 directory. When I looked the accounts in AD I saw that part of the accounts were mailbox enabled and rest of the boxes only mail enabled.

Next step should be stopping the ADC and doing a restore to E55. Do not laugh. All the backups were useles because the bastard customer had tried to take file level backups from online database and ofcourse enabled circular logging. "[Frown]"

I immediately took an offline copy of the database files and examined priv.edb. I opened the file with Ontrack software but could see only the same mailboxes as in Exchange Admin.

I noticed that all the lost mailboxes were owned by accounts that had been migrated from NT4 domain some years ago. UPN-logon-name of these accounts was not present. All the new accounts that were created directly to AD worked well and I moved these mailboxes to new Exchange system.

My questions are. Do anybody know why this happened? Is there any possibilities to restore lost data from this priv.edb file?

Post #: 1

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