Dell PowerStore X model Software Upgrade Guide

ESXi and VM considerations (PowerStoreOS 1.0.x to 2.0.x)

During the software upgrade process, vSphere Distributed Resource Scheduler (DRS) attempts to migrate the VMs on one node of a PowerStore X model cluster to the other node of the cluster.

However, manual intervention may be required when one of the following conditions exists:

• If VMs or VM disks are stored on the local VMFS datastores of the internal ESXi hosts, manually migrate the VMs or VM disks to a PowerStore vVol datastore.
  NOTE: The local VMFS datastores on the internal ESXI hosts are intended only for internal PowerStore system components.
• If the total amount of memory or CPU usage across the VMs exceeds the amount available on a single node, migrate the user VMs to other available ESXi hosts or power off the user VMs.
• If the VMs cannot be migrated automatically because of a different reason, power off the user VMs on the ESXi host.