2008 R2 Server running SBS 2011 with two 1.5TB hard disks mirrored together from within Windows.
Ran fine with no problems up until a restart this evening. I restarted it remotely, so not sure if it installed updates before it shut down or not - there were some waiting.
Prior to the restart i deleted a whole bunch of files freeing up approx 45GB (was already about 50GB free).
On restart server was failing to boot of the first option in the boot menu. Usual windows has failed to start - try booting of DVD and running repaired setup.
I powered the machine off completely and restarted it. This time it blue screened on startup, then the following restart gave me the option to boot into the recovery environment. The recovery environment couldn't detect any fault with the startup, but still blue screening on startup.
Finally restarted again and selected boot from the second hive and its booted with no issues. However in disk managment the mirror is showing both drives, but with "failed redundancy"
I'm a tad confused about how/why this happened and how i'm still able to boot the second hive. The mirror has clearly been updating as the files i deleted just before the restart are not there.
Not quite sure how to proceed - i can't see anywhere the SMART status for the drives, so i'm unsure if one has failed. That said in disk management i can see both drives and the partitioning with no problems.
There's no obvious crunching or unusual noises coming from either of the drives that would lead me to believe one of them has died.
The only options i have are to remove the mirror or reactivate disk and i have these on both of the physical disks.
I'm hesitant to do anything in case it ruins the "good" mirror, but i don't want to leave it because clearly there is an issue.
I'm currently running a full backup to an external hard disk just in case!