HP BB118BV - StorageWorks Data Protector Express Package, Руководство пользователя, Страница: 157 / 365

Chapter 10: Tips, Techniques and Strategies 139
Example 2: Limited physical backup devices
A small company has a limited number of backup devices. Recently the company has expanded and now
has more employees backing up data to these physical devices. Backups are beginning to exceed the
physical media capacity. Some backups halt during processing so that an operator can insert additional
media into the devices. Backups that could be performed unattended now require an operator to be
present.
To ease the burden being placed on both the physical backup devices and the IT support staff, the
company instructs the Data Protector Express administrator to create a virtual device on the network. The
backup jobs are modified to use this virtual device as the backup destination. If D2D2Any backups are
available, you can create rules that transfer the backups from virtual devices to physical media on a
staggered schedule. This schedule permits the IT staff to monitor the physical media, swapping out full
media as necessary, and keeping the backups running smoothly. In standard D2D backups, you can copy
data from virtual media manually.
In this example, a growing company needs the capacity of an expensive library but cannot yet include it
in their budget. By creating a virtual library, or a series of them, the company gains the advantages of the
larger storage capacity of a library without breaking its budget.
Example 3: Creating redundant backups to ease data restore operations
A large company wants to develop a data protection system that includes full data protection but that also
eases the burdens on their IT support staff when minor data restore jobs arise. To do this the company
creates a network virtual library and directs all backups to this destination instead of to physical media.
Each week these backups are transferred to physical media. Rules are set in Data Protector Express to
retain the backup data on the virtual media for a minimum of two weeks before deleting it if the virtual
storage is required for current backups.
An employee discovers that a critical data file has been damaged, so she creates a restore job in Data
Protector Express. Since Data Protector Express tracks of the location of each backup version in the Data
Protector Express catalog, the restore job sees that identical versions of the file exist both on virtual and
physical media. The physical media is no longer in a physical device and an IT staff member would have
to locate it to do a restore from it. Instead of waiting for another staff member to locate the physical
media, Data Protector Express restores the file from the virtual media and the employee can continue her
work.
In this example, the company created redundant backups that made it possible for an employee to restore
data files without involving support staff.
Devices view and Catalog view
The first time you open Data Protector Express, Data Protector Express recognizes any installed devices
— virtual or physical. Data Protector Express provides an intuitive user interface to set up and monitor
these devices. From the
Devices view you perform physical operations with the backup device, such as
creating or configuring a device or erasing, formatting and ejecting media. (See Managing Devices with
the Devices View
on page 141.) Using the
Jobs and Media
view, you can create media folders and media
in the Data Protector Express catalog and delete them from the catalog as well. (See Managing Media
with the Jobs and Media View
on page 147.) The
Catalog
view displays all of the objects in the Data