EMC CLARiiON storage systems work with ESX/ESXi hosts in iSCSI SAN configurations. Generally, you use the EMC software to perform configurations.

For more information, see the EMC documentation.

This is an active-passive disk array, so any related issues that apply to all active-passive disk arrays are relevant. In addition, keep in mind the following:

To avoid the possibility of path thrashing, the default multipathing policy is Most Recently Used, not Fixed. The ESX/ESXi system sets the default policy when it identifies the storage system.

To boot from a SAN, choose the active storage processor for the boot LUN’s target in the HBA BIOS.

On EMC CLARiiON AX100i and AX150i systems, RDMs are supported only if you use the Navisphere Management Suite for SAN administration. Navisphere Express is not guaranteed to configure them properly.

To use RDMs successfully, a given LUN must be presented with the same LUN ID to every ESX/ESXi host in the cluster. The AX100i and AX150i do not do this by default.

When you use an AX100i or AX150i storage system, no host agent periodically checks the host configuration and pushes changes to the storage system. The axnaviserverutil cli utility is used to update the changes. This is a manual operation that you should perform as needed.

Port binding support on EMC CLARiiON storage systems requires initiators in different subnets. See vendor documentation for additional details.

For ESX/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.