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when one of these files starts running out of space, so that you can add new files to
extend the size of the filenames part of the IDB.
Size and growth for CDB (objects and positions)
The CDB records other than filenames occupy a minor share of space in the IDB.
Space consumption is in the range of 100 MB for a medium size backup environment.
For more details, see “IDB size estimation ” on page 203.
CDB location
The CDB is located in the following directory:
• On Windows Server 2008:
Data_Protector_program_data\db40\datafiles\cdb
• On other Windows systems: Data_Protector_home\db40\datafiles\cdb
• On UNIX systems: /var/opt/omni/server/db40/datafiles/cdb
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 are typical, the
DCBF occupies the largest part (typically 80%) of the IDB. To calculate the size of
DCBF, use the following formula: dcbf_file_in_bytes is approximately
num_of_files_on_tape x 30_bytes . Logging level and catalog protection
can be used to specify what is actually stored in the IDB and for how long. See “IDB
growth and performance: key tunable parameters” on page 198.
By default, one DC directory, db40\dcbf, is configured. Its default maximum size
is 16 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.
The Data Protector internal database192