Dell NetWorker 19.9 Administration Guide

Creating a staging resource

To prevent an AFTD from becoming full, configure a Staging resource to automatically move save sets to another medium and make disk space available. The Staging resource defines when NetWorker starts the stage or reclaim disk space operation on the source device, and the criteria that NetWorker uses to determine which data to stage.

1. In the Administration window, click Devices.
2. In the left navigation pane, select Staging.
3. From the File menu, select New.
   The Create Staging dialog box appears, starting with the General tab.
4. In the Name box, type a name for the staging policy.
5. In the Comment attribute, type a description for the staging policy.
6. In the Enabled attribute, select Yes to enable the staging policy or No to disable the staging policy.
   When you select Yes, NetWorker automatically starts the staging policy, based on the configuration settings that you define.
7. In the Devices attribute, select the check boxes next to each source device from which you want to stage data.
   You can assign multiple devices to a single staging policy. However, you cannot assign a single device to multiple staging policies.
8. From the Destination Pool list, select the destination clone pool that contains the volumes to which NetWorker stages the data.

   If you select the clone pool that only uses remote storage node devices, you must also modify Clone storage nodes setting on the Configuration tab of the storage node resource for the NetWorker server to include the storage node name. Determining the storage node for writing cloned data Provides details.

9. In the Configuration group box, specify the criteria that starts the staging policy.

   The following table summarizes the available criteria that you can define for the staging policy.

   Table 1. Staging criteria options

   Option	Configuration steps
   High water mark (%) Low water mark (%)	Use these options to start the stage policy based on the amount of used disk space on the file system partition on the source device. You must define a value higher than the value defined in the Low water mark (%) attribute. High water mark (%)—Defines the upper used disk space limit. When the percentage of used disk space reaches the value that is defined in the High water mark (%) attribute, NetWorker starts the stage operation to move save sets from the source disk. Low water mark (%)—Defines the lower used disk space limit. When the percentage of used disk space reaches the value that is defined in the Lower water mark (%) attribute, NetWorker stops moving save sets from the source disk. NOTE:When staging and backup operations occur concurrently on the source disk device, NetWorker does not accurately display the disk volume usage total in the Written column in output of the mminfo -mv command or in the Used column on the Media window of the NetWorker Administration application.
   Save set selection	Use this option to rank the order in which NetWorker stages the save sets, based on save set size or age. Available values include: largest save set—Stage the save sets in order of largest save set size to smallest save set size. oldest save set —Stage the save sets in order of oldest save set to most recent save set. smallest save set—Stage the save sets in order of smallest save set size to largest save set size. youngest save set—Stage the save sets in order of most recent save set to least recent save set.
   Max storage period Max storage period unit	Use this option to start the stage operation based on the amount of time that a save set has resided on the volume. Max storage period—Defines the number of hours or days that a save set can reside on a volume before the stage process considers the save eligible to move to a different volume. Max storage period unit—Defines the unit of measurement for the value in the max storage period attribute. Available values are Hours and Days. The maximum storage period setting is used along with the file system check interval. Once the maximum storage period is reached, staging does not begin until the next file system check.
   Recover space interval Recover space unit	Use this option to determine when the stage operation removes the successfully staged save set from the source volume. Recover space interval—Defines the frequency in which NetWorker starts of the recover space operation, which removes successfully stage data from the source volume. Recover space unit—Defines the unit of measurement for the value in the recover space interval attribute. Available values are Hours and Days.
   File system check interval	Use this option to define when NetWorker automatically starts the staging process. File System Check Interval—Defines the frequency in which NetWorker starts the staging process. At every file system check interval, if either the high water mark or the maximum storage period has been reached, then staging begins. File system check unit—Defines the unit of measurement for the value in the file system check interval attribute. Available values are Hours and Days.
   Read-only volumes contain read-only save sets	No new data can be written to the volume. However, the save sets are still subject to retention settings. Space recover and reclaim operation (nsrim) does not delete the expired save sets from read-only disk type volumes

10. Optionally, to start the staging process immediately:
    1. Select the Operations tab.
    2. From the Start Now list, select the component of the staging process to perform immediately, for all source devices that are assigned to the staging policy:
       • Recover space—To recover space for save sets with no entries in the media database and to delete all recycled save sets.
       • Select Check file system—To check the file system and stage eligible sage set data to a destination volume.
       • Select Stage all save sets—To stage all save sets to a volume in the destination pool.

       After the staging operation is complete, this option returns to the default setting (blank).

11. Click OK.