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Take a Backup of a Snapshot


Explains what the feature is or what its benefits are to the user or customer.


Taking a backup pulls a snapshot out and dumps it to persistent storage on disk, on a network mounted directory. Use this procedure when you want to create a backup.

Before creating a backup, you must identify an existing snapshot to use or take a new snapshot. The time required to take a backup depends on the data size. Taking a backup does not take long, and happens in the background while the cluster is running.

Backups can be quite large, so make sure you have enough disk space before taking one. You may be able to store a small backup in the /export directory on the appliance. But backups are more commonly stored using a NAS (network attached storage) file system.

Choose the mode of backup you want to create, either full, lightweight, or dataless. The directory to which you will write the backup must not already exist. You specify the directory to use, and it will be created for you when taking the backup.

Use this procedure to make a backup of a snapshot.

  1. Log In to the Linux Shell Using SSH.
  2. Find out the name and size of the snapshot you want to back up.
    $ tscli snapshot ls
    Name          : pre_2_5
    Reason        : Automatic pre update snapshot
    Hdfs snapshot : pre_2_5
    Start         : Sat May 23 09:04:03 2015
    End           : Sat May 23 09:04:22 2015
    Size          : 23.80 GB
  3. Make sure you have enough room on the disk where you will save the backup.
    $ df -h
  4. Create the backup, designating the type of backup, the snapshot name, and a directory:
    $ tscli snapshot backup [--mode {full|light|dataless}] <name> <directory>
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