HP Data Protector Software Cell Manager Planning and Sizing
Table Of Contents
- Executive summary
- Solution description
- Cell Manager software topology
- IDB architecture
- Why should you configure the IDB?
- Regular IDB backups
- IDB notifications
- Limitations
- IDB Growth and Performance
- IDB key growth factors
- IDB key performance factors
- IDB key growth and performance parameters
- Influence of logging level on IDB
- Example: Changing of logging level for filesystem backup
- Influence of catalog protection on IDB
- Example: Changing of catalog protection of a backup
- Recommended usage of logging level and catalog protection
- Use different logging levels in the same cell
- Different logging levels for ObjectCopies
- Specifics for small cells
- Specifics for large cells
- Maintenance of DCBF directories
- Cell Manager hardware aspects to consider
- Cluster support for Data Protector software Cell Manager
- Security
- IDB space consumption example
- Cell Manager requirements
- For more information
Figure 5 depicts the database table extension wizard.
Figure 5: Database table space extension wizard
Detail Catalog Binary Files (DCBF)
DCBF information
The Detail Catalog Binary Files part stores file version information. This is information about backed
up files, such as file size, modification time, attributes/protection, and so on.
One DC (Detail Catalog) binary file is created for each Data Protector medium used for backup.
When the medium is overwritten, the old binary file is removed and a new one is created.
DCBF size and growth
In an environment where filesystem backups using the Log all option is typical, the DCBF occupies the
largest part (typically 80%) of the IDB. Approximately 30 bytes are used for each version of each
backed up file. Logging level and catalog protection can be used to specify what is actually stored in
the IDB and for how long.
By default, one DC directory is configured for the DC binary files, the db40\dcbf directory. Its default
size is 4 GB (16 GB for Data Protector 6.1), the maximum configurable size is 32 GB. You can
create more DC directories and have them on different disks on the Cell Manager, thus extending IDB
size. The maximum number of supported directories per cell is 50.
DCBF location
By default, the DCBF is located in the following directory:
<Data_Protector_program_data>\db40\dcbf (Windows Server 2008),
<Data_Protector_home>\db40\dcbf (other Windows systems), or
/var/opt/omni/server/db40/dcbf (UNIX systems).
Consider the disk space on the Cell Manager and relocate the DC directory, if necessary. You can
create more DC directories and locate them to different disks. Create several DC directories only if the
number of media/DC binary files grows very big (several thousands) or you have space issues.
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