- HBase snapshots allow you to create point-in-time backups of tables without making data copies, and with minimal impact on RegionServers. HBase snapshots are supported for clusters running CDH 4.2 or later.
- HDFS snapshots allow you to create point-in-time backups of directories or the entire filesystem without actually cloning the data. These snapshots appear on the filesystem as read-only directories that can be accessed just like any other ordinary directories. HDFS snapshots are supported for clusters running CDH 5 or later. CDH 4 does not support snapshots for HDFS.
For further information about how snapshots work, see the section on snapshots in the CDH 5 Installation Guide.
Cloudera Manager enables the creation of snapshot policies that define the directories or tables to be snapshotted, the intervals at which snapshots should be taken, and the number of snapshots that should be kept for each snapshot interval and lets you create, delete, and restore snapshots manually with Cloudera Manager.
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