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how many members can be created inside a single pds?
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Answer Posted / bryan
Depends on what the PDS is used for. If PDS is updated with
ISPF and statistics are recorded you get less members.
Stats are stored in an optional user area of any given
directory block. Consider a LOAD library (no ISPF stats) -
you can get many more members in 1 directory block than a
PDS which you edit. A directory block is 256 bytes - 2
bytes for a count field followed by 3-21 directory entries.
Directory entries are comprised of 8-byte member name,
starting position of the member in the PDS, and some
optional data of up to 62 bytes.
I recommend using PDSE instead and no longer have to worry
about directory blocks and compressing your library.
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