About robotic libraries in Backup Exec
|Article:HOWTO73435|||||Created: 2012-03-02|||||Updated: 2012-03-16|||||Article URL http://www.symantec.com/docs/HOWTO73435|
Backup Exec's Advanced Device and Media Management (ADAMM) feature solves the problems that are associated with typical robotic library modules. Backup Exec accesses all of the media in the robotic library and uses the media that belongs to the specified media set. If the backup job exceeds the capacity of a media, Backup Exec searches all of the media that is contained in the robotic library and finds a suitable media to use.
For example, an operator has a robotic library with six slots. The operator inserts six blank tapes and targets backup jobs to various media sets within the robotic library. Backup Exec automatically allocates available tapes in the robotic library. If a job exceeds the capacity of one tape and another overwritable tape is available in the robotic library, the job automatically continues on that tape. When Backup Exec runs out of tapes, it prompts the operator to import overwritable media.
In a robotic library, Backup Exec selects the oldest recyclable media in the library to use first. If more than one media that meets the requirements is found, Backup Exec selects the media in the lowest-numbered slot. For example, Backup Exec selects media in slot 2 before it selects equivalent media in slot 4.
For restore jobs that use robotic libraries, Backup Exec accesses the source media regardless of its sequential placement in the magazine. For example, if the data for a restore job resides on two media in the magazine, the media do not have to be placed in adjacent slots for Backup Exec to restore the data. If Backup Exec does not find the media that is required for the restore job in the robotic library, an alert is generated that requests the media that is necessary to complete the job.
Article URL http://www.symantec.com/docs/HOWTO73435