Setup Guide

In Thin Provisioning format, in-guest space reclamation is available, provided the following minimum requirements are fulfilled:

● ESXi 6.x

● Thin virtual disks

● VM hardware version 11

● EnableBlockDelete set to 1

● Guest OS support of UNMAP

NOTE: Refer to the corresponding guest OS chapter within this document for instructions on how to efficiently create a

file system.

Virtual Machine Guest OS Settings

This section details the recommended settings and considerations for virtual machines guest OS.

● LUN Queue Depth - For optimal virtual machine operation, configure the virtual machine guest OS to use the default queue

depth of the virtual SCSI controller. For details on adjusting the guest OS LUN queue depth, refer to VMware KB# 2053145

on the VMware website (http://kb.vmware.com/kb/2053145).

● RDM volumes in guest OS - Span RDM volumes, used by the virtual machine, across SCSI controllers to prevent a

bottleneck on a single SCSI controller.

● RDM volumes in guest OS used for Microsoft Cluster (MSCS) - ESXi hosts with visibility to RDM volumes, used by Microsoft

Cluster (MSCS) may take a long time to start or to perform LUN rescan.

For the required settings on the RDM volumes, refer to VMware KB# 1016106 (http://kb.vmware.com/selfservice/

microsites/search.do?language=en_US&cmd=displayKC&externalId=1016106).

Host Configuration for VMware vSphere ESXi