Enabling Space Reclamation

On deletion of files on the Client filesystems (ext4/NTFS), you can reclaim space on the thin provisioned iSCSI LUNs. This is achieved by supporting the SCSI UNMAP CDB.

Enabling the space reclamation feature using ElastiCenter

  1. In the Storage Volumes page, click the iSCSI Volume for which you want to enable the space reclamation feature.
  2. In the Actions pane, click Manage iSCSI configuration.
  3. Click Edit.
  4. Enable UNMAP by selecting Enable from the drop-down list.
  5. Click Save.
  6. unmap

Note: CloudByte recommends you to select the option Optimize drives in the disk defragmenter utility on Windows 2012 Clients, to reclaim dead space on the thin-provisioned Volumes.