doc/glossary: add DAS

Add a definition for "DAS" (directly attached storage).

Signed-off-by: Zac Dover <zac.dover@gmail.com>
(cherry picked from commit a1f53a0fc0314c5c8a5cb0cb6d47acf20a4e52d0)

diff --git a/doc/glossary.rst b/doc/glossary.rst
index 69cb9fb8943a2731bfe13c7e013da69c3ed741c2..baaf761bf3347504a09a03d2cedc77a87723aafd 100644 (file)
--- a/doc/glossary.rst
+++ b/doc/glossary.rst
@@ -195,6 +195,11 @@
                 The CRUSH data placement rule that applies to a particular
                 pool(s).
 
+        DAS
+                Direct-Attached Storage. Storage that is attached directly to
+                the computer accessing it, without passing through a network.
+                Contrast with NAS and SAN.
+
        :ref:`Dashboard<mgr-dashboard>`
                 A built-in web-based Ceph management and monitoring application
                 to administer various aspects and objects of the cluster. The