Backing Up Data › Backup Staging Methods › How Backup to Disk to Tape Works › How to Configure Arcserve Backup to Perform Disk Staging Backups › Specify Copy and Purge Policies for Disk Staging Backups

Specify Copy and Purge Policies for Disk Staging Backups

Arcserve Backup lets you specify copy (migration) and purge policies for disk staging backups. Copy policies let you define when to migrate backup data to its final destination media after Arcserve Backup completes the backup to a disk staging device. Purge policies let you define when to delete backup sessions for the device to reclaim disk space.

The following information describes how to define policies for full and differential/incremental backups to a file system device or a deduplication device (B2D2T). For information about how to set policies for full and incremental/differential backup policies to a library or virtual library, see How to Configure Arcserve Backup to Perform Tape Staging Backups.

Note: The copy and purge policies specified for disk staging backups apply to file system devices and deduplication devices.

To specify copy and purge policies for disk staging backups

1. Open the Backup Manager and select the Start tab.

   From Start tab, click Normal Backup and Enable Staging.

   The Staging Location and Policies tabs appear in the Backup Manager.

2. Click the Policies tab.

   The copy and purge options appear.

3. Specify the following Copy Policies, as required, for the job:
   • Click Full Backup to specify policies for full backup jobs and select Differential/Incremental Backup to specify policies for differential and incremental backup jobs.
   • Do not copy data--Choose this option if you do not want to migrate the backup sessions to final destination media. For example, consider differential and incremental backup operations. Operations of this type tend to have short retention periods and are small with respect to overall size. If you do not copy the incremental and differential backups to final destination media, the need for tapes to store your backups diminishes.
   • After--Lets you start the migration job after specified length of time elapses.

     Note: Be aware that physical disks and volumes do not support differential and incremental backups. As a result, Arcserve Backup applies full backup policies to incremental and differential backups of physical disks and volumes. The Copy Time is the only exception to this behavior. With staging backups, Arcserve Backup copies incremental and differential backups of physical disks and volumes to final destination media based on the copy policies specified for incremental and differential backups.

     Arcserve Backup starts the copy to final destination media operation based upon the occurrence of one of the following events:

     • After job starts--Lets you start the migration operation at a fixed point in time after the backup to disk operation starts.
     • After job ends--Lets you start the migration operation after the backup to disk operation ends.

       Due to variations in the overall size of backup jobs and the length of time needed to complete backup to disk operations, simultaneous read and write operations to the disk staging device can occur. This option prevents simultaneous read and write operations to disk staging devices.

     • After each session is finished--Choose this option if you want to start the copy to media operation immediately after the backup to disk operation for the session is complete.

       Most backup jobs consist of several sessions. When you specify this option, you can direct Arcserve Backup to copy backup sessions to their final destination immediately after the backup job is finished. This option manifests simultaneous backup and copy operations. By performing backup and copy operations simultaneously, you can reduce the overall backup window and copy window.

       Because this option induces simultaneous read and write operations on the FSD, you should only specify this option if you are using a high-speed device that can process many read and write operations simultaneously.

     Note: For all Copy data after options, Arcserve Backup will not migrate sessions to their final destination media until after the backup job for the session is complete. This capability includes scenarios when the copy retention period expires before the backup operation is complete.

   • At--Lets you start the migration operation at a specific time of day. When you use this option you can direct Arcserve Backup to start the migration process at a specific time on a daily basis.
     • Select the Or after the job is finished whichever happens later option if you suspect or anticipate the backup to disk operation to end after the specified start time for the copy to final destination operation. This option prevents Arcserve Backup from copying sessions from disk to tape while the backup operation is in progress.
   • Copy data for specified backups only--Lets you migrate only monthly or weekly backups associated with rotation jobs.

     Note: Copy data for specified backups only options do not apply to incremental and differential backups.

     Default value: Disabled.

     With this option enabled, you can specify one of the following migration options:

     • Copy data for monthly backups only--Lets you migrate only the monthly full backup sessions, not the weekly full backup jobs, associated with rotation jobs.

       Note: This option can be applied on only GFS rotation jobs.

     • Copy data for weekly backups only--Lets you migrate only the weekly full backup sessions, not the daily backup sessions, associated with rotation jobs.

       Seven day rotations--Lets you migrate data in the following scenarios: For 7-day weekly full backups, Arcserve Backup migrates the Saturday (full) backup sessions. For 7-day weekly incremental/differential backup, full backup on Sunday backups, Arcserve Backup migrates the Sunday (full) backup sessions.

       Five day rotations--Arcserve Backup migrates only the Friday (full) backup sessions.

       Note: This option can be applied on rotation jobs and GFS rotation jobs. For more information, see Rotation Schemes.

4. Specify the following Purge Policies, as required, for the job:
   • After--Lets you start the purge operation after specified length of time elapses. Arcserve Backup starts the purge operation based upon the occurrence of one of the following events:
     • After job starts--Lets you start the purge operation at a specified time after the backup to staging device operation starts.
     • After job ends--Lets you start the purge operation at a specified time after the backup to staging device operation ends.
   • At--Lets you start the purge operation at a specific time of day. Use the spin box to specify the time of day that you want the operation to start.
5. To enable SnapLock protection, click the Enable SnapLock check box.

   Note: The device must support SnapLock protection. If you specify Enable SnapLock on a device that does not support SnapLock WORM protection, Arcserve Backup write-protects the data; however, the data can be deleted from the device.