This update provides a new data structure and algorithm for storing deduplication metadata. The appliance is now able to store specific types of metadata on a designated set of meta devices to optimize use cases like deduplication.
Designate SSD meta cache devices that are at least 3.2 TB each for a new or existing storage pool that will use deduplication, so the meta devices can hold deduplication metadata tables. Shares and projects within the storage pool that are already configured for deduplication will be automatically and non-disruptively migrated in the background.
To preserve full replication compatibility if a pre-OS8.7.0 version of deduplication was in use, do not accept OS8.7.0 deferred updates, including this Data Deduplication v2 deferred update, on either sources or targets until software release OS8.7.0 or later has been installed on all. After both the sources and targets have been upgraded at least OS8.7.0, all OS8.7.0 deferred updates can be accepted.
When replicating a deduplicated source share to an OS8.7.0 target pool that does not meet deduplication requirements, the deduplication property of the replica share on the target is disabled. If the target pool is later upgraded by, for example, adding a meta cache device to the pool, the replication target then allows the administrator to set the deduplication property for projects and shares within existing replication packages. Any new replication packages created in the upgraded target pool will retain the deduplication settings of the source projects and shares.
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