-Desired storage classes are specified by setting the "storage_classes_desired" field of a Collection. For example, at the command line:
-
-<pre>
-$ arv collection update --uuid zzzzz-4zz18-dhhm0ay8k8cqkvg --collection '{"storage_classes_desired": ["archival"]}'
-</pre>
-
-By setting "storage_classes_desired" to "archival", the blocks that make up the collection will be preferentially moved to keepstore volumes which are configured with the "archival" storage class.
-
-You may also specify the desired storage class when using @arv-put@:
-
-<pre>
-$ arv-put --storage-classes=hot myfile.txt
-</pre>
-
-Collection blocks will be in the "default" storage class if not otherwise specified.
-
-A collection may have only specify one desired storage class.
-
-A user with write access to a collection may set any storage class.