Dell PowerStore 3000T EMC PowerStore Host Configuration Guide - Page 24

Virtual Disk Provisioning, Virtual Machine Guest OS Settings

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For further details on configuring virtual machines with paravirtualized SCSI controllers, refer to the vSphere Virtual Machine Administration Guide in the VMware vSphere documentation. Virtual Disk Provisioning Follow these recommendations for provisioning virtual disks on the PowerStore cluster. For optimal space utilization with vSphere ESXi 6.x and above, it is recommended to provision virtual disks on the PowerStore cluster, using Thin Provisioning. 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). 24 Host Configuration for VMware vSphere ESXi

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For further details on configuring virtual machines with paravirtualized SCSI controllers, refer to the
vSphere Virtual Machine
Administration Guide
in the VMware vSphere documentation.
Virtual Disk Provisioning
Follow these recommendations for provisioning virtual disks on the PowerStore cluster.
For optimal space utilization with vSphere ESXi 6.x and above, it is recommended to provision virtual disks on the PowerStore cluster,
using Thin Provisioning.
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 (
).
•
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 (
search.do?language=en_US&cmd=displayKC&externalId=1016106
).
24
Host Configuration for VMware vSphere ESXi