Using premium backup and recovery services : Backup Lifecycle Management (BLM) : Third-party snapshot
 
Third-party snapshot
IMPORTANT:  You must have the third-party software installed and functioning properly, otherwise the backup set will remain locked until you delete the BLM request.
If not selected, DS-System locks a backup set for the duration of the BLM Archiving activity.
If selected, you instruct DS-System to use a third-party snapshot for the BLM copy requests (to unlock a backup set as quickly as possible). DS-System integrates with third-party software to create a snapshot of the required directories. Once the snapshot is created, DS-System unlocks the backup set. The BLM request will be performed from the snapshot data.
To configure DS-System for third-party snapshot with BLM Archiving:
1. DS-System writes a “request” file for the third-party software to read (located in the primary storage location, in a sub-folder called blm_pitc). This is a text file named sreq_n.txt, where n is the request number. This file lists all storage locations where the requested backup set data is located. For example:
1 D:\<folder>\data\1\1\1\9\
2 e:\<folder>\data\1\1\1\9\
3 c:\<folder>\data\1\1\1\9\
where <folder> specifies the path to the storage location.
2. The third-party software must read this file and copy that data. Once it is copied, the third-party software writes a “response” file to the DS-System’s primary storage location in the sub-folder called blm_pitc). This must be a text file named sresp_n.txt, where n is the unique request number. This file lists the image locations where DS-System should read the data. For example:
1 W:\snap\location_1\9\
2 W:\snap\location_2\9\
3 W:\snap\location_3\9\
NOTE:  The order of the folders must be identical in the request and response files. The file must be in Text File Format (UTF-8, no Unicode marker).
3. The third-party software deletes the request file (sreq_n.txt). DS-System unlocks the backup set.
4. DS-System starts copying data to the BLM Archiver from the third-party snapshot location. When the BLM archiving process is finished, DS-System deletes the response file (sresp_n.txt).