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Mapping volumes to an ESXi server
34 Dell EMC SC Series: Best Practices with VMware vSphere | 2060-M-BP-V
proxy standard volume traffic between controllers, the paths to the second controller will be set to the standby
state, and only change during a controller failover.
Note: Because of the ALUA protocol addition, the vSphere storage array type plug-in (SATP) module
settings, such as configuring round robin as the default PSP, will need to be changed on each host when
upgrading to SCOS 6.6 and later.
For more detailed information about ALUA in a vSphere environment, see the VMware vSphere Blog post,
Configuration Settings for ALUA Devices.
6.13 Unmapping volumes from an ESXi host
Within ESXi, VMware has added the ability to gracefully remove volumes before unmapping them to prevent
an all-paths down (APD) state.
Before attempting this procedure, consult the section, “Performing Planned Storage Device Removal” in the
vSphere Storage Guide at VMware vSphere documentation.
1. Make note of the volume naa identifier. The naa ID will be referenced later.
2. From the datastore view, right-click the datastore and select Unmount Datastore
Unmounting a datastore