Switch zoning limitations for the EMC Symmetrix and Symmetrix DMX

There are limitations in switch zoning for the SAN Volume Controller and the EMC Symmetrix and Symmetrix DMX systems.

Switch zoning

The SAN Volume Controller switch zone must include at least one target port on two or more fibre-channel adapters to avoid a single point of failure.

The EMC Symmetrix and Symmetrix DMX must be configured to present logical units (LUs) to all SAN Volume Controller initiator ports that are in the fabric zone.

Only SAN Volume Controller initiator ports that are LUN masked on the EMC Symmetrix or Symmetrix DMX controller should be present in the fabric zone.

Note: The EMC Symmetrix and Symmetrix DMX systems present themselves to a SAN Volume Controller cluster as separate controllers for each port zoned to the SAN Volume Controller. For example, if one of these storage systems has 4 ports zoned to the SAN Volume Controller, each port appears as a separate controller rather than one controller with 4 WWPNs. In addition, a given logical unit (LU) must be mapped to the SAN Volume Controller through all controller ports zoned to the SAN Volume Controller using the same logical unit number (LUN).

Connecting to the SAN

You can connect a maximum of 16 EMC Symmetrix or Symmetrix DMX ports to the SAN Volume Controller cluster. There are no further special zoning requirements. Configurations that are setup to adhere to the requirements that are described in previous SAN Volume Controller releases are also supported, but should not be followed for new installations.