![]() ![]() Snapshot operations can also be performed on virtual disk groups, see Virtual Disk Groups for more information. After migration is successfully completed, the snapshot is fully usable and can exist and operate independently of the source from which it was created.Īfter creating snapshots, additional operations can be performed, see Performing Snapshot Operations. Full Migration – The "snapshot" is a tangible clone copy of the "source" virtual disk at the time of the snapshot (snapshot point).Differential snapshots are not protected against unexpected restarts of the DataCore Server. The image is logical and dependent on the source.ĭeleting the source virtual disk, also deletes any differential snapshots due to their dependency on the source. Differential Migration – The "snapshot" is an image of the "source" virtual disk at the time of the snapshot (snapshot point).Increase performance and data availability.Off-load machine cycles related to sharing data between machines. ![]() Use snapshots to provide file-level data sharing in order to: In other words, multiple users can have individual copies of the same data. Alternative to File-level Data Sharing – Snapshots provide a way to present multiple copies of the same virtual disk to multiple hosts.Error Protection – Snapshots provide a way to perform faster and more frequent backups translating to faster recovery from data corruption problems.Fast Data Cloning – Snapshots provide a way to duplicate data quickly without disruption of data availability.Exposure to data corruption and system failure can be minimized by testing against a persistent image of real data before bringing new application changes online. Application Testing – Snapshots provide a way to perform test activities on a consistent and re-usable copy of operational data while the source data remains unaltered.Disaster Protection – Snapshots provide an efficient way to identify and return to specific virtual disk data.Snapshots provide a foundation to solve the following types of problems: Snapshots and CDP rollback volumes will not inherit ownership properties. In the case of a rollback, the image is created regardless of the state. It is possible to create a snapshot at a time when the data is in a known good state and this is the best practice. The difference between the Continuous Data Protection ( CDP) feature and the Snapshot feature is that the snapshot preserves the contents of the virtual disk at a point in time, while a CDP-enabled virtual disk allows the creation of a rollback at any point in time preserved in the history log. At the moment a snapshot is created from a virtual disk, the data contained on the "source" virtual disk is logically or physically copied to another virtual disk, referred to as the "snapshot." Snapshots can be served to hosts. Snapshot is a feature used to create a logical usable image and/or an independent fully usable copy of the data residing on a virtual disk at a specific point in time (snapshot point). ![]()
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