Hi,
we're having a bad situation with a SAN iScsi solution in a production 
environment of a customer: the storage hardware may panic its kernel because of 
its software fault, with the risk of loosing data.
We want to give the SAN manufacturer a last chance of correcting their 
solution: we're going to move data from the SAN to new fresh scsi-attached 
disks, for the time needed for them to find the bugs. Once they've certified us 
the solution, we will move back the data onto the SAN.
Here comes the issue: we can't risk our customer's data to be again on a 
possibly faulty SAN, so we were thinking about reusing the scsi-attached disks 
as part of the zfs pool of the SAN partitions.
The basic idea was to have a zfs mirror of each iscsi disk on scsi-attached 
disks, so that in case of another panic of the SAN, everything should still 
work on the scsi-attached disks.
My questions are:
- is this a good idea?
- should I use zfs mirrors or normal solaris mirrors?
- is mirroring the best performance, or should I use zfs raid-z?
- is there any other possibility I don't see?
Last but not least (I know the question is not pertinent, but maybe you can 
help):
- The SAN includes 2 Sun-Solaris-10 machines, and 3 windows machines....is 
there any similar solution on the win machines?

Thanx for any help
Gabriele Bulfon.
 
 
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