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PBS archive add on CFI
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7. R/3 System Settings
7.1. Hard Disk Space
The PBS archive add on for Accounting Documents is constructed in file systems
independent from database (see chapter 4.1.2). The system administrator's task
here is to reserve free storage capacities for the archive construction. For the reserved disk space a file path has to be defined, which can be used by the PBS archive programs. In addition a restriction of the write/read authorization on this file
path exclusively for the supplied PBS programs would be useful.
The disk space capacities that have to be made available depend on the number of
documents that should be kept in the archive. If the archive is constructed in reference technique, you should calculate a file size of about 30 % of a processed ADK
file. However, you can calculate a capacity of about 800 bytes per document in the
copy technique (including all secondary indices).
7.2. Paging Area
A relatively large paging area is required while the indexing run is carried out. By
means of a test run you can estimate how large this area should be in your SAP
system:
Display: transaction RZ11 - parameter name "rdisp/PG_MAXFS"
Maximum value (SAP)
Default value (SAP)
PBS value (sun45, 3.1H)
in 8K blocks
131,072
2,048
24,576
in MB
1,048
16
196
To estimate the required area an indexing run with 10,000 documents should be
carried out. The secondary index statistics of the index generation program shows
the number of archived indices. With these numbers you can estimate how large
the paging area for indexing of a specific number of documents should be. Vice
versa, you can, of course, calculate how many documents can be indexed as a
maximum into one archive in case of a given paging space.