A space-efficient VDisk has been taken offline because there is an inconsistency in the SAN Volume Controller metadata that describes the disk contents. This might occur because of corruption of data on the physical disk (e.g., medium error or data miscompare), the loss of cached metadata (because of a T3 recovery) or because of a software error. The event data gives information on the reason.
The SAN Volume Controller maintains backup copies of the metadata and it might be possible to repair the space-efficient VDisk using this data.
SAN Volume Controller is able to repair the inconsistency in some circumstances. Run the repair VDisk option to start the repair process. This repair process, however, can take some time. In some situations it might be more appropriate to delete the space-efficient VDisk and reconstruct a new one from a backup or mirror copy.
If you run the repair procedure and it completes, this error is automatically marked as "fixed"; otherwise, another error event (error code 1860) is logged to indicate that the repair action has failed.
Possible Cause-FRUs or other: