I just setup a mirrored volume with 2 hard drives, copied 1TB of data over and everything was smooth, it showed up as Healthy Mirror.
However i got a BSOD sometime after (unrelated) and the computer shutdown unexpectedly.
Now in disk management the mirror says "resynching" on both drives, it seems to have started from scratch for some reason.
This resynch happens every time the PC is shutdown unexpectedly, i switch off properly but if it ever shutdowns incorrectly the whole mirror will rebuild itself.
Is this normal?