Dell PowerStore 5200T EMC PowerStore Host Configuration Guide - Page 46

Virtual Volumes

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NOTE: For details on formatting a newly created volume, see the PowerStore Configuring Volumes guide that matches the version running on your PowerStore cluster. ● Disk alignment - Unaligned disk partitions may substantially impact I/O to the disk. With vSphere ESXi, datastores and virtual disks are aligned by default when they are created. No further action is required to align datastores and virtual disks in ESXi. With virtual machine disk partitions within the virtual disk, the guest operating system determines the alignment. Virtual Volumes On PowerStore operating system below 2.1.1, it is recommended to avoid creating a single host group containing all ESXi hosts, when multiple Virtual Volumes are mapped to these hosts. For information, see Dell EMC Knowledge Article 000193872 (PowerStore: Intermittent vVol bind...). It is recommended to create a dedicated host for each ESXi and mount the Virtual Volume datastore on all ESXi hosts in the cluster. If you require access to regular VMFS datastores in addition to Virtual Volumes, map each of the volumes to each of the ESXi hosts. AppsOn: Virtual Machine Compute and Storage Collocation Rules for PowerStore X Clusters NOTE: The following is applicable only to PowerStore X multi-appliance clusters with operating system version 2.0 (or later). To ensure compute and storage resources collection for optimal VM performance, you can use the predefined VM and host rules in vCenter server. To tie a user VM to a host group, add that VM to the predefined VM group in vCenter server. For more details, see PowerStore Virtualization Infrastructure Guide. vSphere Considerations VMware Paravirtual SCSI Controllers Configure virtual machines with paravirtual SCSI controllers to achieve higher throughput and lower CPU usage. For optimal resource utilization of virtual machines with PowerStore, it is recommended to configure virtual machines with paravirtualized SCSI controllers. VMware paravirtual SCSI controllers are high-performance storage controllers that can provide higher throughput and lower CPU usage. These controllers are best suited for high-performance storage environments. For further details on configuring virtual machines with paravirtualized SCSI controllers, see 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 46 Host Configuration for VMware vSphere ESXi

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NOTE:
For details on formatting a newly created volume, see the
PowerStore Configuring Volumes
guide that matches
the version running on your PowerStore cluster.
●
Disk alignment - Unaligned disk partitions may substantially impact I/O to the disk.
With vSphere ESXi, datastores and virtual disks are aligned by default when they are created. No further action is required
to align datastores and virtual disks in ESXi.
With virtual machine disk partitions within the virtual disk, the guest operating system determines the alignment.
Virtual Volumes
On PowerStore operating system below 2.1.1, it is recommended to avoid creating a single host group containing all ESXi
hosts, when multiple Virtual Volumes are mapped to these hosts. For information, see
Dell EMC Knowledge Article 000193872
(PowerStore: Intermittent vVol bind...)
.
It is recommended to create a dedicated host for each ESXi and mount the Virtual Volume datastore on all ESXi hosts in the
cluster.
If you require access to regular VMFS datastores in addition to Virtual Volumes, map each of the volumes to each of the ESXi
hosts.
AppsOn: Virtual Machine Compute and Storage Collocation Rules
for PowerStore X Clusters
NOTE:
The following is applicable only to PowerStore X multi-appliance clusters with operating system version 2.0 (or
later).
To ensure compute and storage resources collection for optimal VM performance, you can use the predefined VM and host rules
in vCenter server.
To tie a user VM to a host group, add that VM to the predefined VM group in vCenter server.
For more details, see
PowerStore Virtualization Infrastructure Guide
.
vSphere Considerations
VMware Paravirtual SCSI Controllers
Configure virtual machines with paravirtual SCSI controllers to achieve higher throughput and lower CPU usage.
For optimal resource utilization of virtual machines with PowerStore, it is recommended to configure virtual machines with
paravirtualized SCSI controllers. VMware paravirtual SCSI controllers are high-performance storage controllers that can provide
higher throughput and lower CPU usage. These controllers are best suited for high-performance storage environments.
For further details on configuring virtual machines with paravirtualized SCSI controllers, see 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
46
Host Configuration for VMware vSphere ESXi