I haven't seen it mentioned, so thought I would bring up the issue of "user 
data" in the PDS member entries.
We weren't told whether the PDS did or did not support 'user data' for its 
members, but if the PDS is being maintained using ISPF with STATS ON (the 
default), then a performance hit in the retrieval of a given member will be the 
result.
Each directory block can contain roughly 3 times as many member names without 
'user data', than one maintained with ISPF STATS ON.
In a PDS with 180,000 members, that can make a huge difference.

Ron

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