.. _About the Appliance:

About the Appliance
===================

The appliance comprises five nodes in a 19-inch 3U rackmount server chassis. The appliance deploys into a universal and easy-to-use software-defined infrastructure solution that combines virtualization and storage. It allows you to create and manage virtual machines and offers object, block, and file storage, including a local repository for cloud backups.

The appliance comes in several models that vary by storage capacity:

.. tabularcolumns:: |>{\TL}\X{3}{16}%
                    |>{\TL}\X{3}{16}%
                    |>{\TL}\X{2}{16}%
                    |>{\TL}\X{3}{16}|

.. table::
   :class: longtable

   +----------+-----------------+------------------------+
   | Model    | Raw storage, TB | Usable storage\*, TB   |
   |          |                 +----------+-------------+
   |          |                 | Capacity | Performance |
   +==========+=================+==========+=============+
   | SDI-5060 | 60              | 31       | 18          |
   +----------+-----------------+----------+-------------+
   | SDI-5120 | 120             | 62       | 36          |
   +----------+-----------------+----------+-------------+
   | SDI-5150 | 150             | 77       | 45          |
   +----------+-----------------+----------+-------------+
   | SDI-5180 | 180             | 93       | 54          |
   +----------+-----------------+----------+-------------+

\* With the recommended redundancy scheme. Erasure coding 3+2 is recommended for capacity; replication=3 is recommended for performance.

.. toctree::
   :name: pIhylejo4zgReZ38
   :caption: In this chapter:
   :maxdepth: 3

   appliance-exterior