esxcli storage vmfs unmap reclaimable unit number

[tdubb123]

what is the reclaimable unit number to use when using esxcli storage vmfs unmap?

is that different per storage provider?

[npadmani]

- 200 MB for 1 MB block VMFS3 / VMFS5

as you see, this depends upon VMFS file system version and block size. Since VMFS 5 onward we have only 1 MB block size, the default reclamable-unit number is 200 MB.

but at the same time, we also have lines documented saying "some array vendors may suggest a larger or smaller value depending on how the array handles the SCSI UNMAP command." so yes, better to refer storage vendor documentation/recommendations as well before you go about running the command.

please refer following KB for more information.

Using the esxcli storage vmfs unmap command to reclaim VMFS deleted blocks on thin-provisioned LUNs ...