6027-696 [E] Too many disks are unavailable.

Explanation
A file system operation failed because all replicas
of a data or metadata block are currently unavailable.
User response
Issue the mmlsdisk command
to check the availability of the disks in the file system; correct
disk hardware problems, and then issue the mmchdisk command
with the start option to inform the file
system that the disk or disks are available again.