Media Server Considerations; Benefits Of Copying To Physical Tape Through The Backup Application; Writing To Tape In A Lan/San Hybrid Environment - HP StorageWorks 12000 - Virtual Library System EVA Gateway Manual

Figure 13 Writing to Tape in a LAN/SAN Hybrid Environment
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Media Server Considerations

To support the background copy of backup data from the VLS or D2D to a tape library, use one or
more of your existing backup media servers (running the backup application media agents) to copy
the data directly from the device media onto the tape media with data passing over the SAN from
the VLS or D2D to the device server and then back again to the tape library. If you are running the
copies after the backup window is complete, all of the media servers that were performing LAN
backups are now idle and can be used for copies. Do not use media servers that are performing
LAN-free backup because these will be active application servers and could affect application
performance if used for copy operations. Ensure that the media servers used for tape copies are
plugged into the same SAN switch as the virtual library and physical library so the copy traffic does
not use any SAN bandwidth. In this configuration, the tape copy does not impact the running
application servers, so it can be run in the background after the backups are completed.

Benefits of Copying to Physical Tape through the Backup Application

Using a dedicated media server to migrate data stored on a VLS or D2D to a physical library allows
you to:
40 Backup Solution Design Considerations