Dell PowerVault ME5 Series Storage System Deployment Guide

Enable multipathing on an ESXi host with SAS volumes

If you have more than one SAS HBA connection to each ME5 controller, perform the following steps to enable multipathing. If you have only one SAS HBA connection to each ME5 controller, you do not need to modify the multipathing policy.

1. Select the newly created datastore.
2. Select the Configure tab and click Connectivity and Multipathing.
3. Select the host to use for multipathing.
4. Under Multipathing Policies click Actions and select Edit Multipathing.
5. In the Edit Multipathing Policies window, select Round Robin (VMware) from the Path selection policy drop-down list.
   NOTE The VMware multipathing policy defaults to Most Recently Used (VMware). Use the default policy for a host with one SAS HBA that has a single path to both controllers. If the host has two SAS HBAs (for example, the host has two paths to each controller), Dell recommends that you change the multipathing policy to Round Robin (VMware).
6. Repeat this process for each SAS volume that is attached to the ESXi host.
   NOTE For detailed steps and custom commands for MPIO see the Dell PowerVault ME5 Series: VMware vSphere Best Practices guide.