Administrator Guide

Table Of Contents
Configure an OpenVMS Unique Disk ID for a Volume
Configure an OpenVMS unique disk ID to identify the volume to servers running the OpenVMS operating system. You might
need to reset this value when recovering a volume from a snapshot. For example, if you map a volume to a server, create a
snapshot, and then mount a new view volume to the server, the new view volume has a new disk ID. To allow the server to
recognize it as the same volume, you must modify the disk ID to match the original value.
Steps
1. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of
Unisphere Central.
2. From the STORAGE menu, click Volumes.
The Volumes view is displayed.
3. On the Volumes view, select the volume you want to modify.
4. Click (Edit).
The Edit Volume dialog box opens.
5. Expand Advanced Settings.
6. In the OpenVMS Unique Disk ID field, type a new disk ID.
7. Click OK to close the Edit Volume dialog box.
Configure Related View Volume Maximums for a Volume
For a given volume, you can configure the maximum number of view volumes, including the original volume, that can be created
for volumes that share the same snapshot. You can also configure the maximum combined size for these volumes.
Prerequisites
Consult with technical support before changing these limits.
Steps
1. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of
Unisphere Central.
2.
From the
STORAGE menu, click Volumes.
The Volumes view is displayed.
3. On the Volumes view, select the volume you want to modify.
4. Click
(Edit).
The Edit Volume dialog box opens.
5. Expand Advanced Settings.
6. In the Maximum Volume Count field, type the maximum number of view volumes, including the original volume, that can be
created for volumes that share the same snapshot history as this volume.
7. Click OK to close the Edit Volume dialog box.
Copying Volumes
Copy a volume to create an identical volume for back-up or reuse of the data.
The destination volume of a copy, mirror, or migrate must meet the following requirements:
Must not be mapped to a server.
Must be the same size or larger than the source volume.
Cannot be active on another controller.
56
Storage Center Administration