Each KeepDisk has, in addition to the usual "attributes of Arvados resources":resources.html:
table(table table-bordered table-condensed).
-|*Property name*|*Value*|*Description*|*Example*|
-|id|integer|||
-|uuid|string|||
-|owner_uuid|string|||
-|modified_by_client_uuid|string|||
-|modified_by_user_uuid|string|||
-|modified_at|datetime|||
+|*Attribute*|*Type*|*Description*|*Example*|
|ping_secret|string|||
|node_uuid|string|||
|filesystem_uuid|string|||
|last_read_at|datetime|||
|last_write_at|datetime|||
|last_ping_at|datetime|||
-|created_at|datetime|||
|updated_at|datetime|||
|service_host|string|||
|service_port|integer|||