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Tivoli Space Manager for UNIX Using the Hierarchical Storage Management Clients

Assign Management Classes to your Files

Your TSM administrator defines management classes that contain specific requirements for migrating files to storage. You assign these management classes to files on your local file systems. The management class that you assign to a file determines file eligibility for migration. Use the default management class for some or all of your files. Assign different management classes to specific files or groups of files using one or more include statements in your include-exclude options file.

A management class can contain a backup copy group and an archive copy group. Copy groups contain attributes that control the generation, destination, and expiration of backup versions of files and archived copies of files. For information about backup and archive copy groups, see Tivoli Storage Manager for UNIX Installing and Using the Backup-Archive Clients. Table 7 lists the space management attributes and their defaults that might be included in a management class.

Table 7. Space Management Attributes in a Management Class

Attribute Description Default
spacemgtechnique Specifies that a file is eligible for automatic and selective migration, selective migration only, or neither. The values for this attribute are:
Auto
The file is eligible for both automatic and selective migration.
Selective
The file is eligible for selective migration only.
None
The file is not eligible for migration.

Attention: If you use the default management class named Standard that is shipped with the TSM product, and your administrator has not changed the default setting for the spacemgtechnique attribute, files are not migrated from your workstation.

None
automignonuse Specifies the number of days (zero through 9999) that must elapse since you last accessed the file before it is eligible for automatic migration. Zero
migrequiresbkup Determines whether a current backup version of the file must exist on your migration server before the file is eligible for automatic or selective migration. The values for this attribute are:
Yes
A current backup version must exist.
No
A current backup version is optional.

Attention: If you set this attribute to yes in the management class that you assigned to a file, TSM checks for a current backup version of the file on your migration server only. If a current backup version does not exist on your migration server, the file is not migrated, even if a current backup version exists on another server.

Yes
migdestination Specifies the name of the storage pool in which TSM stores the file when it migrates. spacemgpool

Table 8 defines some tasks you might perform and the type of management class to assign to your files.

Table 8. Assigning Management Classes to Your Files

Task Assignment
You want to migrate and back up a file. Assign a management class to a file with space management attributes and backup-archive copy groups that you want to use for that file. Assign only one management class to a specific file.
Your client node communicates with the same server for both space management and backup-archive services. Assign a management class to a file containing space management attributes and backup-archive copy groups that you assigned to TSM to use for that file.
You migrate files to one server and back up and archive files to one or more different servers:
  • Specify a different include-exclude options file for each server.
  • Assign only one management class to a file in a specific include-exclude options file.
  • Assign different management classes to files in different include-exclude options files.

For example, if you back up files in /home/holland to Server1, the include-exclude options file that you use for Server1 might specify a management class named mgmt1a for a file named /home/holland/testfile. This management class must contain an appropriate backup copy group for the file.

If you migrate files in the /home file system to Server2, the include-exclude options file that you use for that server might specify a management class named mgmt2b for the same file. That management class must contain appropriate space management attributes for the file.


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