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| Information in this overview regarding the definition of a backup set, the types of backup sets, and the creation of a default backup set does not apply to the DB2 iDataAgent. For more information, see Backup Sets - DB2 iDataAgents. |
A backup set is a logical grouping of subclients. There are two types of backup sets: default and user-defined. These types and their differences are discussed in this section.
Upon installation, most agents that utilize backup sets create a default backup set that contains a default subclient. This ensures that all data backed up by the specific agent is ready to be included in its backup operation.
The Windows 2000 and higher File System iDataAgents include the system state in the Default Subclient by default, but you can optionally exclude the system state from the Default Subclient and use a different subclient to back up the system state, depending on how you want to safeguard critical information. (Only one subclient per backup set can be used to back up the system state.)
For certain agents which support instances or partitions together with backup sets, upon installation the system creates one default backup set per instance to achieve the same coverage. Within those agents, some require a manual creation of backup sets in place of the automatic generation at installation. For these latter agents you are responsible for defining the data to be protected.
For most agents, the default backup set can contain subclients other than the default subclient. You can add user-defined Subclients to a default backup set. When you do, certain agents remove the user-defined content from the default backup set's default subclient content.
For agents that support them, you can create additional backup sets, i.e., user-defined backup sets, to back up data using different backup options or schedules. By adding user-defined backup sets to your agent configuration, you can establish:
A user-defined backup set will contain its own default subclient. For most agents, you can add user-defined Subclients to a user-defined backup set. When you do, certain agents remove the user-defined content from the backup set's default subclient content.
The default backup set and the user-defined backup sets differ only in that:
All Migration Archiver Agents support one or more special types of container objects (called archive sets) which provide a logical grouping of subclients in the CommCell Console. These groupings allow you to perform operations on all subclients within that set, without having to administer each individual subclient. These group operations include the ability to perform archive operations, browse recoveries, configure security, set up data protection job schedules, as well as view job histories.
The various types of archive sets supported by Migration Archiver Agents are briefly described below:
The File Archiver Agents provide a default grouping for subclients, called the Default Archive Set, for the purpose of performing traditional archive and recovery operations on the client. This type of archive set contains one or more user-defined subclients, and allows you to easily distinguish it from other specialized types that may reside on the client such as On Demand Archive Sets.
The Exchange Mailbox Archiver and Exchange Public Folder Archiver Agents also support a default archive set, which is a complete set of subclients that contain all the Exchange Mailboxes or Public Folders on the client computer.
The File Archiver Agents support the On Demand Archive Set type of grouping which is designed for use with the On Demand Data Protection Operations feature. This feature allows you to specify which files you want to archive through the use of Content files, instead of using Subclient Contents and Archiving Rules. See On Demand Data Protection Operations for an overview.
Agents listed below support the ability to create additional archive sets, i.e., user-defined archive sets. This feature is useful for archiving client data using different archive options or schedules, and for workload balancing. For step-by-step instructions, see Create Archive Sets.
User-defined Archive Sets are supported by the following agents:
| If there is an overlap in the data archived between various Archive Sets on the same client, data must be retained on all the storage policies used by various subclients in all Archive Sets on the client in order to recover data. |
You can perform various operations from the backup set/archive set as long as the agent is installed and appears enabled in the CommCell Browser. Backup set/archive set operations include the configuring and running backup/archive operations, browse and restore/recovery jobs and supporting functionality, such as, List Media, Alerts, View Data Protection Jobs and Scheduling. Not all operations for backup sets/archive sets are performed from the backup set/archive set node. In many cases, equivalent operations can be performed only from some other node.
For details on agent-specific operations, see agent backup set/archive set overviews linked at the top of this page.
You can configure operation rules at this level using the Operation Window. See Operation Window for an overview.
The following pages provide information on agent-specific backup set/archive set options: