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As Informix instances reference a database, you must create an Informix instance for each of the databases that you want to back up.
See Instances for an overview of Instances. Given below is a list of what you need to provide before creating an Informix instance.
You must define a storage policy for backing up the user commands and the logical log files for the Informix Instance; this allows you to view and track the status of jobs in the Job Controller and Event Viewer.
Software compression for Informix Command Line Backups can be enabled or disabled at the instance level. Software compression for Informix Archive Logs Backups and data are managed through the subclient level. When you change the compression scheme for Archive Logs you change it for data as well, and vice versa.
| Each Informix iDataAgent consumes one license during installation. Note that each license can accommodate multiple instances and databases. |
Once installed, the agent is configured and is therefore able to manage the data or volumes on the client computer. However, you can change certain aspects of the instance configuration to manage the data in the manner that best suits your needs.
You can view or change the instance configuration from the Instance Properties dialog box. The following information can be configured.
See Change the Home Directory for step-by-step instructions.
You can change the Informix (Home) directory for the Informix iDataAgent
You can change the ONCONFIG file, which is used to help administer the number of streams. See Change the ONCONFIG File for step-by-step instructions.
By default, the streams are not assigned in ONCONFIG file to perform backups. However, assigning the number of streams will result in faster backups. Ensure that the number of backup streams are equal or less than the available number of streams in CommServe at the Storage Policy level.
| Keep in mind that the number of streams configured for backups must also be used when restoring data. For example, if you configure a subclient to use 4 streams, you must also use 4 streams to restore the data. |
Use the following steps to configure the data streams for backups:
| 1. |
Open the following file : #$INFORMIXDIR\etc\onconfig |
Example: # $INFORMIXDIR\etc\onconfig.demo_on |
| 2. |
Set the streams in the BAR_MAX_BACKUP parameter. For Example, If you want to set the number of streams to 4 , the parameter would be: BAR_MAX_BACKUP 4 |
Example: BAR_MAX_BACKUP 4 |
| 3. | Start a backup (Full or Incremental). The backup will be performed using the number of streams specified. |
By default, you will not be able to perform log backups since the location to store the logs is not configured in ONCONFIG file. The directory of logs is configured as /dev/null on Unix computers and NUL on Windows computers in TAPEDEV and LTAPEDEV parameters. You can specify a proper directory to store the logs in TAPEDEV and LTAPEDEV parameters and perform log backups.
| ON-Bar utility stores the logs in the directory specified in LTAPEDEV and do not use TAPEDEV. ontape utility stores the logs in the directory specified in TAPEDEV. |
Use the following steps to specify the location to store the logs and perform backups:
| 1. |
Open the following file : #$INFORMIXDIR\etc\onconfig |
Example: # $INFORMIXDIR\etc\onconfig.demo_on |
| 2. | Change the location in TAPEDEV and LTAPEDEV parameters from /dev/null on Unix computers and NUL on Windows computers to a proper directory. |
Example:
TAPEDEV /dev/null LTAPEDEV /dev/null Change to: TAPEDEV /dev/tmp LTAPEDEV /dev/tmp |
| 3. | Start a full backup. The logs will be stored in a directory specified in TAPEDEV and LTAPEDEV parameters during a backup. |
When accessing the Encryption tab from the instance level, you are selecting either Network and/or Media-side encryption for third-party Command Line operations. When accessing this same tab from the subclient level, the settings selected apply only to the selected subclient content for operations run from the CommCell Console. (See Data Encryption for an overview.) See the configuration section for your agent for more information on this feature.
From the Storage Device tab, you can view or change the storage policy used to back up data via the command line for the selected instance, select a storage policy for backing up logs on the selected instance, or view or select a default storage policy for the selected instance. By defining a storage policy for command line backups, you can view and track the status of those same jobs in the Job Controller. If you redefine (i.e., select a new) storage policy for command line backups at the instance level, the storage policy will apply only to any new command line backup jobs (i.e., those backup jobs that you subsequently start). (See Storage Policies for an overview.) See the configuration section for your agent for more information on this feature.
You can change the Windows or Unix user accounts that are used by the system to access the application and in effect perform all data protection and recovery operations for the iDataAgent.
See the Informix iDataAgent section in User Accounts and Passwords for more information.
You can perform the following functions:
For more information, see User Administration and Security.