How Do I Delete Snapshots and Set a Snapshot Expiration Time?

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In DeviceManager, choose Data Protection > Snapshot > Snapshot. Then, you can delete snapshots. If a snapshot expiration time has been set for a snapshot, the system automatically deletes it at the specified time and reclaims the storage space occupied by the snapshot data.

When manually creating a snapshot or timing snapshot policy, you can set a snapshot expiration time or select Never Expire. You can also change the snapshot expiration time of an existing snapshot. After you change the snapshot expiration time in a timing snapshot policy, snapshots generated subsequently will expire at the new expiration time.

Other related questions:
Do HyperMetro LUNs support value-added features such as snapshots and remote replication?
A LUN that has been added in the HyperMetro domain support snapshots and can function as the primary LUN in remote replication, that is, the active-active data center solution can be expanded to the 3DC disaster recovery solution. In addition, active-active LUNs are compatible with value-added features such as SmartQoS, SmartCache, and SmartTier.

Introduction to the Dorado snapshot feature
A snapshot is a point-in-time copy of source data. A snapshot serves as a data backup and is accessible to hosts. The snapshot features instant generation and small space occupation.

6900 V3 snapshot specifications
OceanStor 6900 V3 snapshot specifications are as follows: Maximum number of snapshots: 2048 Maximum number of source LUNs: 1024 Maximum number of snapshots for a source LUN: 256 Maximum number of LUNs that can be consistently activated: 512 For detailed specifications, see V3R1 Latest Software Specifications.

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