The storage layer systems support quorum disks. Clustered systems that have a storage level system can choose MDisks that are presented by a storage level system as quorum disks.
Replication layer systems can use storage that is presented by the storage layer system, but Metro Mirror and Global Mirror cannot interoperate between the two systems. Replication layer systems can participate in Metro Mirror and Global Mirror partnerships only with other replication layer systems. Storage layer systems can participate in Metro Mirror and Global Mirror partnerships only with other storage layers.
For more information, see Metro Mirror and Global Mirror partnerships information.
Volumes that are defined on a storage layer system can be used by the replication layer system as a source or target for advanced copy functions. Advanced copy functions include FlashCopy, Metro Mirror, and Global Mirror.Flex System V7000 Storage Node, Storwize V7000 for Lenovo, or Storwize V7000 Unified advanced copy functions are not supported for volumes that are used as MDisks.
A Flex System V7000 Storage Node, Storwize V7000 for Lenovo, or Storwize V7000 Unified system can present some volumes to the Lenovo Storage V series system system and other volumes to hosts on the SAN. However, an individual volume cannot be presented to both the Lenovo Storage V series system system and a host simultaneously.
If many storage layer systems are managed by a single Lenovo Storage V series system node, be aware of the published limit for maximum Flex System V7000 Storage Node, Storwize V7000 for Lenovo, or Storwize V7000 Unifiedstorage systems per fabric. If the limit is exceeded by as little as a single storage system, divide the storage layer systems into multiple zones. Replication layer Flex System V7000 Storage Node, Storwize V7000 for Lenovo, or Storwize V7000 Unified systems count toward the maximum number of Lenovo Storage V series system nodes that might be present within a single SAN zone. For more information, see the following website: