Mirrored volumes pathing problems

mirrored volumes pathing problems        
I am running Windows 2008 Server Datacenter.
I created some mirrored volumes with disk administrator.
These disk are in a fibre channel fabric.
All paths go down so disk administrator losses the disks.
All paths come up and disk administrator recovers the disks.
The mirrors all show as failed.
There are disks that show as failed, and disks that show as foreign.
When I import the foreign disks. 
One of the mirrored volume starts resyncing, and the other mirrored volume comes up as 2 simple volumes.
Both mirrored volumes were in sync when the paths went down.
So I expected them to come back up as mirrored volumes when the paths come back up.
There is no I/O running at the time of the path failures.

So let me see if I understand correctly.
2 volumes presented to 2008 Datacenter via fibre channel
Volumes are then mirrored via windows
Disks drop off line and then the second mirror is 2 simple volumes but the first is rebuilding.
So question 1 - Is it for read performance that the disks are mirrored?
Question 2 - what disk errors appear in the event log when this happens
Question 3 - whats the HBA used in the server
Question 4 - Whats the backend staorage
Question 5 - Is MPIO being used?
Do we know the reason that the paths became unavailable? That would be probably my biggest concern.
Also when the simple volumes came back up was the data available?
Brad Held http://windorks.wordpress.com

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