We have a 4 x 100gig EBS volumes used as dynamic disks in a raid 0 (striped) drive attached to a Windows2008 R2 Datacentre 64bit Amazon EC2 instance.
This all works fine, except we have had 3 occurrences within 5 weeks where one of the disk suddenly becomes unreadable/unavailable and it is offline in disk manager, and you can't reactivate it back into the striped drive using the disk manager.
The only way we can seem to get it working again is to restart the EC2 windows instance. All disks/volumes of the striped drive then come back online once it boots up again.
Amazon haven't yet been able to answer the question for us and I was wondering if anyone else had experienced the same problem or had a solution ?