EMC CLARiiON storage systems work with ESXi hosts in SAN configurations.
Basic configuration includes the following steps:
Installing and configuring the storage device.
Configuring zoning at the switch level.
Creating RAID groups.
Creating and binding LUNs.
Registering the servers connected to the SAN. By default, the host automatically performs this step.
Creating storage groups that contain the servers and LUNs.
Use the EMC storage management software to perform configuration. For information, see the EMC documentation.
ESXi automatically sends the host's name and IP address to the array and registers the host with the array. You are no longer required to perform host registration manually. However, if you prefer to use storage management software, such as EMC Navisphere, to perform manual registration, turn off the ESXi auto-registration. Turning it off helps you avoid overwriting the manual user registration. For information, see Disable Automatic Host Registration in the vSphere Web Client.
Because this array is an active-passive disk array, the following general considerations apply.
The default multipathing policy for CLARiiON arrays that do not support ALUA is Most Recently Used. For CLARiiON arrays that support ALUA, the default multipathing policy is VMW_PSP_FIXED. The ESXi system sets the default policy when it identifies the array.
To use boot from SAN, make sure that the active SP is chosen for the boot LUN’s target in the HBA BIOS.
For ESXi to support EMC CLARiiON with ALUA, check the HCLs to make sure that you use the correct firmware version on the storage array. For additional information, contact your storage vendor.