Information in this section includes cautions, restrictions, special requirements, and information about array characteristics that you might need to consider when configuring or using the storage array.
Caution about using the VCMDB LUN
For the VCMDB (Volume Configuration Management Database) to be enabled, the VCMDB LUN must exist. The VCMDB LUN is a command type LUN, not a storage LUN. The VCMDB is typically mapped to LUN 0, but can be mapped to an array LUN other than LUN 0.
Caution about using the ACLX LUN
On VMAX arrays, the ACLX (Access Control Logix) LUN is created during initialization if the customer requests using ACLX. The ACLX LUN is not a storage LUN so it should not be mapped to Data ONTAP.
Restriction on using a gatekeeper LUN
If a gatekeeper logical device (LUN) is presented, do not map it to the V-Series system. V-Series systems cannot use a gatekeeper LUN. A gatekeeper is a Symmetrix logical device through which SYMAPI or the ControlCenter agent communicates with the storage array.
EMC Symmetrix storage array families Data ONTAP does not support mixing some types of storage in aggregates. To help you determine the array LUNs that can be mixed in an aggregate, the storage arrays from each vendor are grouped into families. When you create aggregates, you cannot mix array LUNs from different vendors and from different storage array families in the same aggregate.