Determining if a thin reclamation array needs reclamation

You can only perform thin storage reclamation on LUNs that have the thinrclm attribute. An array may be a good candidate for reclamation if:

Even if storage capacity is reaching the maximum, that does not necessarily mean there is any data to reclaim; the data could still be needed. You should investigate further to determine if there are large blocks of deleted or unused data. If there are, run thin reclamation.

For more information reclaiming storage, see Symantec Storage Foundation and High Availability Solutions Solutions Guide.