HDS Data Retention Utility (DRU)

Topics | Configure | How To | Related Topics

View or modify the properties of a disk library
View or modify the properties of the mount path
View the Contents of a Mount Path
Delete the Contents of a Mount Path
Migrate Disk Libraries
DeConfiguring a Disk Library
Data Aging on DRU Disk Libraries

Overview

HDS Data Retention Utility (DRU) in the Thunder and Lighting class of arrays can be configured as a disk library. The library can be configured on a MediaAgent with the Windows operating system.

Once configured, the HDS DRU supports all the operations supported by a disk library.

Configure a HDS DRU as a Disk Library

The following software must be installed and the disk configured on the MediaAgent computer in which the DRU is configured:

HDS HiCommand Device Manager Server version 4.0 must be installed, configured and set up on any one of the network machine which can see the Storage Array subsystem. Refer to HDS HiCommand Device Manager Documentation for further configuration information.
The array be discovered and added to HDS HiCommand Device Manager Server
CIMOM feature of HiCommand Device Manager must be activated by modifying the configuration files on HiCommand Server. See documentation of HiCommand for further configuration information.

Follow the steps described in Configure HDS DRU Disk Library for configuring the library.

Administer HDS DRU Disk Library

From the CommCell Browser, you can perform the following operations on a DRU disk library:

View or modify the properties of the library

You can view the properties and modify the library name, low watermark and the status of a disk library from the CommCell Console.

View or modify the properties of the mount path

You can also view the properties and modify the maximum number of readers, maximum number of writers, maximum number of readers and writers and the status of a mount path from the CommCell Console.

In addition, you can also view the configuration and space information associated with a disk library.

View the Contents of a Mount Path

You can view the contents of a specific mount path. This feature can be used to view a list of data protection operations residing in the mount path. All the details associated with the data protection operation(s) available in the media are displayed. This includes the following:

The Job ID and the status associated with the data protection operation
Names of the client, agent, instance/backup set and subclient
Whether the data protection operation is Full, Incremental, Differential or Synthetic full
The archive file type
The day and time in which the archive file associated with the data protection operation was created.

See View the Contents of a Mount Path for step-by-step instructions.

Delete the Contents of a Mount Path

The delete contents option can be used to logically delete the contents of a mount path.

This operation deletes the data from the CommServe database. Note that this operation does not free-up the disk space in the mount path. A Data Aging operation must be run subsequently to free-up the disk space.

This option can be used to make media available to complete an important data protection job when there is no free-space available in the library.

CAUTION

Extreme caution should be exercised while using this option as once deleted, the contents of the mount path will not be available for data recovery operations.

The Delete Contents operation is recorded in the Audit Trail.

See Delete the Contents of a Mount Path for step-by-step instructions.

Migrate Disk Libraries

You can migrate a disk library to another MediaAgent within the CommCell. Consider the following while performing this operation:

To migrate a disk library, the target MediaAgent must have access to the same mount path as the source MediaAgent. Therefore, it is recommended that the target MediaAgent be created using mirroring. Mirroring allows one MediaAgent to be set up identically as another MediaAgent.
If mirroring is not an option, the user must have mount paths that are accessible to the target MediaAgent. After migration, ensure that all mount paths are online or accessible.
You cannot migrate a shared disk library.

See Migrate a Disk Library for step-by-step instructions.

DeConfiguring a Disk Library

Deconfiguring a HDS DRU disk library is similar to deconfiguring a disk library. See Deconfigure a Disk Library for step-by-step instructions.

Data Aging on DRU Disk Libraries

The software sets retention rules for data aging based on the values established in the Storage Policy Copies that is used to write the data in DRU disk library. Note however, if the volume is marked full (using the Mark media full after successful operation in the Media tab of the Advanced Backup/Migration/Archive Options dialog box) the data retention values will be set on the disk. Subsequent changes to the Storage Policy Copy, especially to a shorter retention will not change the retention time and attempts to prune the data on the device will be denied.

License Requirement

This feature requires a Feature License to be available in the CommServe^® Server.

Review general license requirements included in License Administration. Also, View All Licenses provides step-by-step instructions on how to view the license information.