Here are some lessons learned from a recent recovery of a server with the following error:
Lesson #1 – Blinking Hard Drives
So when I got to the customer site the Dell server had blinking hard drive lights on two of the drives. Based on the support article about it the lights meant -“Identifying drive or preparing for removal.” and digging into the RAID controller I found the worst possible scenario for a RAID-5 array – two dead hard drives. I removed the two dead drives, cleared the configuration on the RAID controller, built a new RAID-5 array out of the remaining drives (4 out of 6), and did a fast initialize.
Lesson #2 – Drive letters on Windows Server Backup
Not sure if anyone else has noticed, but when Windows Server Backup is setup to use an external drive it likes to hide the drive by not assigning it a drive letter. This caused a few issues with the restore done from Windows Server 2012 R2 USB boot media as it couldn’t find the drive. I had to connect the external drive to my laptop then give it a drive letter. Plugged it back into the server and rebooted.
Lesson #3 – Patience is a virtue in Scanning for System Image Disks
Following the basic instructions for doing a Windows Server Backup 2012 Restore via Windows Server 2012 R2 USB boot media it came to the point where it does the scanning for System Image Disks. Turns out this can take hours depending on the speed of the drive plus the size and quantity of restores you have on the external drive. Just wait for the process to complete.
Lesson #4 – UEFI or Legacy BIOS matters
So you waited all that time for the Scanning for System Image Disks to complete and now that precious moment arrives when you realize that the Windows Server 2012 R2 USB boot media that you created was UEFI instead of legacy BIOS and the restore fails telling you so. Make sure that when you create the Windows Server 2012 R2 USB boot media that you change the settings to match the system that you are trying to restore.
Hope that these lessons help a few other Windows Server admins, who are trying to do a Windows Server Backup 2012 Restore, save some time and frustration. If you are looking for a better way to do backup and restore then contact us for details.
