index, rather than a full copy of the volume contents. Only if the
read/write volume moves to another partition or changes
substantially does the read-only volume consume significant disk
- space. Read-only volumes kept on other partitions always consume the
- full amount of disk space that the read/write source consumed when
- the read-only volume was created.</para>
+ space. Read-only volumes kept on other servers' partitions always
+ consume the full amount of disk space that the read/write source
+ consumed when the read-only volume was created.</para>
+
+ <para>You cannot have a replica volume on a different partition of
+ the same server hosting the read/write volume. "Cheap" read-only
+ volumes must be on the same partition as the read/write; all other
+ read-only volumes must be on different servers.</para>
</sect2>
<sect2 id="Header_58">