About Flexible Storage Sharing
Flexible Storage Sharing (FSS) is a feature of Storage Foundation Cluster File System High Availability (SFCFSHA) that enables network sharing of local storage, cluster wide. The local storage can be in the form of Direct Attached Storage (DAS) or internal disk drives. Network shared storage is enabled by using a network interconnect between the nodes of a cluster.
FSS allows network shared storage to co-exist with physically shared storage, and logical volumes can be created using both types of storage creating a common storage namespace. Logical volumes using network shared storage provide data redundancy, high availability, and disaster recovery capabilities, without requiring physically shared storage, transparently to file systems and applications.
FSS allows growing the existing storage by growing the LUN, which is termed as Dynamic LUN Expansion (DLE). To use the DLE feature, you resize the appropriate disks using the Management Server console, which internally invokes the InfoScale
disk resize command. The command intelligently detects the remote disks and gets the required protocol executed to complete the LUN expansion; you don't need to specify any additional options. No explicit master switching is required.
You can leverage DLE to grow the storage on Linux hosts in cloud environments.
For information on FSS support for you platform and InfoScale configuration, refer to the platform-specific InfoScale 9.0 Software Compatibility List.
Figure: Flexible Storage Sharing Environment
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