Until recently 0.0% of my customers had upgrade their servers to Windows 2008. Last month was my first experience installing it or working with it for more than a few minutes. The OS overall seems solid but left me extremely disappointed in the System Backup.
I haven’t spent enough time with the system to give a fully qualified review but I can say that I struggled just getting the system to do a backup of the C drive. Although I expect you’ll hear more from me about this system (hopefully about how wrong I was), for now I’ll just run through the problems we had. Hopefully it will help someone else in the future.
Background:
- This customer had 2003 SBS that they had been running for years. Recently the hardware became a little flaky so we decided it was time to upgrade. They spent a few bucks and ordered a very nice server with 2008 SBS on it.
- When the server arrived we followed Microsoft’s instructions on migrating from 2003 to 2008. Things went pretty smoothly. Backups and restores took the most time.
- We decided that the old server, despite its quirks, still had some value so we put new hard drives in it and loaded it with 2003 standard edition as each domain can only have 1 SBS server on it.
- The old hard drive from the original server were placed in a USB drive case and mounted on the new server. We surmised that it would nice to have the drives handy, just in case we missed any data.
Problem:
A few days after the installation we were attempting to configure the backup system. The thing that was immediately apparent was no Exchange backup, no SQL Server backup; it was a full system backup or nothing. I’ve read that Microsoft plans to add an Exchange module to the system, but as far as I can tell it’s not out yet. I’ve also seen a few posts where people were speculating that the MS engineers were simply saying that the fix was coming. This could just be typical Microsoft bashing so I’m not sure who to believe.
I digress…After we saw that we needed to change our backup strategy, we decided to start with a backup of the C drive.
Configuring the backup wasn’t difficult; we just used the wizard in the SBS Console. Running the backup proved more challenging. We immediately received an error in the Backup History that said “Server Backup did not finish successfully. See the Event Log for details. “
Road to a solution:
Ok great. Not very helpful but what can you do? A Google search for “Event 521 Backup” (See Image 1) led me to this Microsoft page. The article basically says “Check for other event failures with a source of either VSS or SPP”.
Oh boy, another clue! We found errors in the Application event log for source SPP (Event ID #16387 – See Image 2) that happened at the same time the backups were run. Eventid.net pointed to this MS article.
This wild goose of an article indicates that the problem is caused by “an active EISA partition on the computer is a hidden partition”. Although this computer had an EISA partition, it was not active so this turned out not to be the problem. Further investigation of the error messages showed slight differences in the error message (although the Event ID was the same).
In the article referenced above the message was “Description: Shadow copy creation failed because of error reported by ASR Writer. More info: Incorrect function.” The message that we were receiving was “More info: The backup failed due to a missing disk for a dynamic volume. Please ensure the disk is online and retry the backup.”
Finally, with mild-to-severe aggravation motivating me, I ran a Google search on that phrase. After 2 or 3 of the results I found this article and about half-way through the author mentions that he had a broken mirror that caused the problem…
Light bulb!
The USB drive that I had installed on the new server also had a failed mirror. One of the reasons we changed servers was that very reason. Image 3 shows the Disk Manager while we were having problems.
At the time I was working on this problem I was off-site so I wasn’t able to physically remove the drive but I did take it ‘offline’ via the Disk Management tool. Once that was done (See Image 4) the backup worked fine — even though the failed mirror had nothing to do with either the source or destination of the backup.
Although I didn’t test this, I’m sure removing the USB drive from the system or removing the mirror would also solve the problem.
Whew! Glad that’s over. Now onto finding an Exchange backup…
Overview:
- Windows 2008 SBS System backups were failing.
- Event Log showed the following errors:
- Event ID # 521
- Source: Backup
- Description: Backup started at ‘<date> <time>’ failed as Volume Shadow copy operation failed for backup volumes with following error code ‘<error code>’. Please rerun backup once issue is resolved.
- Event ID #16387
- Source: SPP
- Description: More info: The backup failed due to a missing disk for a dynamic volume. Please ensure the disk is online and retry the backup.”
- Cause of failure:
- A failed mirror on an old drive listed in Disk Manager
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KB1005 – Image 1
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KB1005 – Image 2
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KB1005 – Image 3
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KB1005 – Image 4
Windows 2008 Backup – Chasing a solution