Tuning Backup Objects; Refining Physical Locations; Refining Media Compressions - HP Data Protector A.06.11 User Manual

Tuning backup objects

This section discusses methods of optimizing backup objects performance.

Refining physical locations

Configuring data centers helps you optimize premount jobs. Premount jobs are faster
and more efficient if the premount walk-through is grouped in a logical order by
physical location (to use the shortest/quickest path from device to device).
By default, any system or device is placed in the default data center. You can change
the data center assignment if you have additional data centers in your site. Also, if
you created data center grid locations and assigned a system or device to the data
center, you can also specify its grid location.
Modify locations for systems and devices from Global Objects -> Backup/Restore
Devices, Global Objects -> Systems, or Backup/Restore Devices and Systems at the
site level.
If systems and devices are assigned to a Backup Manager, you can edit them from
Devices and Hosts tabs in the Edit Backup Manager window.
Finally, you can import system grid locations from the Import tab on the Site
Configuration window. Any devices attached to those systems automatically inherit
the host system grid location.

Refining media compressions

All devices and media have a media compression attribute (such as LTO-1 for a basic
LTO media type). By default, the smallest media compression is set in all automatically
created pools and devices.
NOTE:
The media compression attribute is essential when estimating scratch media needs
during premount jobs. Leaving a default attribute may result in overestimating the
number of media.
To modify compressions for pools, go to Global Objects -> Media Pools or Media
Pools at the site level. If pools are assigned to a Backup Manager, you can also edit
them from Pools in the Edit Backup Manager window.
80 Configuring Media Operations