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