doc/glossary: add "object storage"

Add a (very basic) definition of object storage.

Signed-off-by: Zac Dover <zac.dover@proton.me>
(cherry picked from commit 43057b88538e868b817acb04d5e6c4e95b4c716e)

diff --git a/doc/glossary.rst b/doc/glossary.rst
index 317c8f88207d56899a98f4bee1f89511bedfcc66..631b7b532a622e3f937304006ec7e81d9fe0514f 100644 (file)
--- a/doc/glossary.rst
+++ b/doc/glossary.rst
@@ -320,6 +320,12 @@
        Node
                 See :term:`Ceph Node`.
 
+       Object Storage
+                Object storage is one of three kinds of storage relevant to
+                Ceph. The other two kinds of storage relevant to Ceph are file
+                storage and block storage. Object storage is the category of
+                storage most fundamental to Ceph.
+
        Object Storage Device
                 See :term:`OSD`.