Whether more snapshots can be created for a file system of a V3 series unified storage system when the snapshot count of the file system reaches the limit

2

When the snapshot count of a file system reaches the limit:
1. If snapshots are manually created, no more snapshots can be created.
2. If the scheduled snapshot function is configured, more snapshots can be created but the earliest snapshots will be automatically deleted.

Other related questions:
Using command lines to create snapshots of V3 series unified storage systems
The create snapshot general command is used to create snapshots. Run this command when you want to create a fully usable copy for a data object at a time point.

Whether other snapshots of a file system are lost after a user rolls back the file system to a snapshot
After the rollback, all snapshots created after the target snapshot will be deleted.

Method used to check the snapshot data of a file system in an OceanStor V3 storage system
After creating a snapshot for a file system, you must enable the hidden directory of the snapshot to be visible. Then, you can share the snapshot to a client using the NFS or CIFS sharing service provided by the OceanStor storage system. After sharing the snapshot to a client, you can access and obtain the snapshot data generated at a point in time on the client.

Methods used to create a snapshot in an OceanStor V3 storage system
There are four methods for creating a snapshot in an OceanStor V3 storage system: 1. You can manually create snapshots for LUNs using OceanStor DeviceManager. 2. You can use OceanStor ReplicationDirector to configure a periodic snapshot policy for LUNs. Then, snapshots will be periodically created for LUNs. 3. You can manually create snapshots for file systems using OceanStor DeviceManager. 4. You can configure a periodic snapshot policy for file systems using OceanStor DeviceManager. Then, snapshots will be periodically created for file systems.

Whatever thin or thick file systems are created in V3 series unified storage systems, why does capacity have been allocated when the file systems are just created?
Because by default, the storage system reserves 20% capacity for snapshots. You can change the value in the advanced properties when creating a file system.

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