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Storage Backends

A Bareos Storage Daemon can use various storage backends:

Tape
is used to access tape device and thus has sequential access.
File
tells Bareos that the device is a file. It may either be a file defined on fixed medium or a removable filesystem such as USB. All files must be random access devices.
Fifo
is a first-in-first-out sequential access read-only or write-only device.
Droplet
is used to access an object store supported by libdroplet, most notably S3. For details, refer to :ref:`SdBackendDroplet`.
Dplcompat
replacement for Droplet with compatible storage format (i.e. you can switch from Droplet to Dplcompat and back), see :ref:`SdBackendDplcompat`.
GFAPI (GlusterFS)

is used to access a GlusterFS storage.

.. deprecated:: 25.0.0
Dedupable
is used to support filesystem block-based deduplication, see :ref:`SdBackendDedupable`.

GFAPI Storage Backend

.. deprecated:: 25.0.0

GFAPI (GlusterFS)

A GlusterFS Storage can be used as Storage backend of Bareos. Prerequisites are a working GlusterFS storage system and the package bareos-storage-glusterfs. See https://www.gluster.org/ for more information regarding GlusterFS installation and configuration and specifically https://docs.gluster.org/en/latest/Administrator-Guide/Bareos/ for Bareos integration. You can use following snippet to configure it as storage device:

.. literalinclude:: /include/config/SdDeviceDeviceOptionsGfapi1.conf
   :language: bareosconfig

Adapt server and volume name to your environment.

:sinceVersion:`15.2.0: GlusterFS Storage`

Dedupable Backend

Dedupable

A dedupable device splits up the data it receives into bareos specific data and file data to store them separately. It tries to store the file data blocks it receives only at certain intervals in its storage. This should make it possible for your filesystem to deduplicate its the actual file data.

For this to work correctly, the device option BlockSize needs to be set to the block size your filesystem uses to deduplicate. It is also important that :config:option:`fd/client/MaximumNetworkBufferSize`is divisible by this size.

.. literalinclude:: /include/config/SdDeviceDeviceOptionsDedupable.conf
   :language: bareosconfig
   :caption: example configuration

:sinceVersion:`23.1.0: Dedupable Storage`