10.3. Comparing share types for the Shared File Systems service

You can create share types to define the capabilities of shares. The following table describes share types and their capabilities.

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表 10.1. Share types
Share type	Values	Description
`driver_handles_share_servers`	true or false	Grants permission to use share networks to create shares.
`snapshot_support`	true or false	Grants permission to create snapshots of shares.
`create_share_from_snapshot_support`	true or false	Grants permission to create clones of share snapshots.
`revert_to_snapshot_support`	true or false	Grants permission to revert your shares to the most recent snapshot.
`mount_snapshot_support`	true or false	Grants permission to export and mount your snapshots.
`replication_type`	dr	Grants permission to create replicas for disaster recovery. Only one active export is allowed at a time.
	readable	Grants permission to create read-only replicas. Only one writable, active export is allowed at a time.
	writable	Grants permission to create read/write replicas. Any number of active exports are allowed at a time per share.
`availability_zones`	a list of one or more availability zones	Grants permission to create shares only on the availability zones listed.