By allowing physical storage to essentially be allocated on demand as application writes are performed on thin LUNs, Thin Provisioning effectively automates storage provisioning. The problem is that when data is deleted from a host file system, the physical storage stays allocated to a thin LUN. As a result, all thin LUNs have a tendency to become ‘chubby’ over time, resulting in increasing amounts of wasted storage (storage that is allocated but does not support application data).Veritas Storage Foundation Thin Reclamation offers a simple solution to this problem, automating the task of “right‐sizing” your thin storage, without affecting application uptime. Symantec is the first software vendor to offer such capability.
vxdisk reclaim [<disk>|<dg>|<encl>]
vxdisk –o thin listStep 2: Perform Thin Reclamation via:
vxdisk reclaim [<disk>|<dg>|<encl>]Step 3: Observe the difference in physical allocation after Thin Reclamation via:
vxdisk –o thin listDownload the attached Solution Brief for more information.