Metadata server zoning

This topic provides the considerations for setting up a zone for metadata servers and the LUNs in the system storage pool.

It is not necessary for metadata servers to access the user storage pools. Although data access is coordinated by the metadata servers, data operations are always performed by a client. The metadata servers only need access to the volumes in the system storage pool, and should be zoned to limit their access to only those volumes.

This illustration shows an exmple of the zoning configuration for the metadata servers.

Considerations

SAN File System allows you to zone the metadata servers and clients so that they access only the LUNs that they need during LUN discovery and normal operation.
  • The metadata servers need access only to the system storage pools. They do not need access to the user storage pools. Configure the metadata server zone to encompass only those LUNs associated with the system storage pool.
  • All system storage pool volumes must be seen by all metadata servers and only by metadata servers.
  • No user storage pool volumes should be seen by the metadata servers.
  • Zone the metadata servers so that the number of paths from each metadata server to each LUN is limited to two. This maximizes the number of dual-access LUNs that are accessible to the cluster.

Parent topic: How do I set up zones in SAN File System?

Related reference
Client zoning

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