Merge pull request ceph#55539 from zdover23/wip-doc-2024-02-12-glossary-osd-terms

doc/glossary: improve OSD definitions

Reviewed-by: Anthony D'Atri <[email protected]>

Author: zdover23

doc/glossary.rst

@@ -298,18 +298,19 @@
                 mid-2010s to insist that "OSD" should refer to "Object Storage
                 Device", so it is important to know which meaning is intended. 
 
-	OSD fsid
-                This is a unique identifier used to identify an OSD. It is
-                found in the OSD path in a file called ``osd_fsid``. The
-                term ``fsid`` is used interchangeably with ``uuid``
-
-	OSD id
-                The integer that defines an OSD. It is generated by the
-                monitors during the creation of each OSD.
-
-	OSD uuid
-                This is the unique identifier of an OSD. This term is used
-                interchangeably with ``fsid``
+	OSD FSID 
+                The OSD fsid is a unique identifier that is used to identify an
+                OSD. It is found in the OSD path in a file called ``osd_fsid``.
+                The term ``FSID`` is used interchangeably with ``UUID``.
+
+	OSD ID 
+                The OSD id an integer unique to each OSD (each OSD has a unique
+                OSD ID). Each OSD id is generated by the monitors during the
+                creation of its associated OSD.
+
+	OSD UUID 
+                The OSD UUID is the unique identifier of an OSD. This term is
+                used interchangeably with ``FSID``.
 
         Period
                 In the context of :term:`RGW`, a period is the configuration