Users Guide

Table 6. vSphere Distributed Resource Scheduler (DRS) policy
Default vSphere value Recommended PowerStore value Notes
Automated. However, a user can disable DRS
if needed, such as using a vSphere ROBO
license.
Table 7. vSphere High Availability (HA)
Default vSphere value Recommended PowerStore value Notes
Disabled Enabled If a user disables vSphere HA, user VMs are not
protected from ESXi host failures.
Table 8. vSphere HA Admission Control
Default vSphere value Recommended PowerStore value Notes
Disabled Disabled vSphere does not differentiate between
PowerStore OS VMs and user-created VMs.
If HA Admission Control is enabled, vSphere
reserves resources for the PowerStore OS VMs
and user VMs cannot be failed over.
NOTE: Enabling HA Admission Control might
prevent the PowerStore OS VMs from
powering on.
Table 9. vSphere HA Advanced Options
Default vSphere value Recommended PowerStore value Notes
das.ignoreInsufficientHbDatas
tore = false
das.ignoreInsufficientHbDatastore = true The default value for this setting causes vSphere
to display a warning when there are fewer
than two datastores in the cluster. This warning
is unnecessary and misleading because the
default PowerStore X model configuration has
single vVol datastore. If this setting is changed,
vSphere displays the warning message:
The number of heartbeat datastores
for host is 1, which is less than
required: 2
Table 10. VMware Enhanced vMotion Compatibility (EVC)
Default vSphere value Recommended PowerStore value Notes
Disabled Disabled All VMs including the PowerStore controller VM
must be shut down to change this value.
Table 11. Path selection policy for a Protocol Endpoint (PE)
Default vSphere value Recommended PowerStore value Notes
● Path Selection Policy =
Most Recently Used
● iops = 1000
● No of outstanding I/Os
with competing worlds =
32
● Path Selection Policy = Round Robin
● iops = 1
● No of outstanding I/Os with competing
worlds = 128
The Round Robin policy allows the optimized use
of multiple paths. The other parameter settings
are recommendations for better performance and
are based on testing. Changing these values can
cause I/O performance degradation.
Getting started 17