Topic:
What does Option #10: Compress all BAT volumes do?

Description:

Solution:
This option compresses interpretation and seismic volume files that have been
flagged for deletion in IESX.

IESX applications allocate disk space dynamically to store seismic data and
interpretation.  The basic storage unit is called a brick*.  Files composed of
bricks are referred to as BAT (Brick Access Tools) files.  The interpretation
(*.surf, *.disp) and seismic (*.vvol, *.hvol, *.svol) BAT files are located in
the project DSLs.  Some deletion operations in IESX do not dynamically remove
unused bricks, but rather mark them free for use by subsequent data creation
operations.  The BAT compression function scans all interpretation and seismic
files and compresses where possible.

*one brick = 256 * 256 traces = 65536 traces

WARNING: This option does not free up a vast amount of space. Unless you have
done a lot of deletions of seismic and interpretation in your project, it is
suggested not to run this option. GeoQuest suggests add more DSL's to your
project and move large files to the new DSL's in DataManager > Utilities > Move.

1.) Make sure to have a current backup of the project before proceeding with
    this option.

2.) Check disk space! - If the disks are at 100% capacity, possible corruption
    could occur.

3.) Check permissions! - If permissions are not open for the user to perform
    this function, possible corruption could occur.

4.) Project must be unshared otherwise you will get a warning that it cannot
    perform funtion.

5.) Check to make sure that the key files (example: *vvol_key.dat,
    *vvol_key.fpb, *vvol_key.idx) that compliment the *.disp, *.surf, and *.vvol
    files are located on the same DSL.  Otherwise, possible corruption could
    occur.

6.) Large projects could take a long time (30+ minutes) and should NEVER be
    aborted while running this option.

PROCEDURE:

1.) Option #1 - Initialize access to data area.
   - Enter the project name and password.
   - Enter #1 to access exploration data area type.

2.) Option #10 - Compress all BAT volumes. 

3.) Option #2 - Deallocate project.

4.) Option #99 - Exit IESX_Util.




Last Modified on: 23-NOV-98