On Mon, 7 Sep 2015 17:59:22 +0200, Peter Hunkeler wrote:
>>What type of dataset? PS, PO, PDSE, ...? The optimal block size for PDSE
>>(FB-80, DSNTYPE=LIBRARY) is 32720.
>
>Yes, its about PDSEs. Kind a makes sense, sure. However I have been using
>PDSEs for a long time and don't seem to remeber to have seen this. Must have
>been blind (meaning I didn't care to look to carefully), obviously.
>
>
>Did this change with z/OS V2.1?
>
No.
Check the archives ("Default System BLKSIZE for PDSE" in Oct 2006)
"Partitioned Data Set Extended Usage Guide" (
http://www.redbooks.ibm.com/abstracts/sg246106.html?Open ) Figure 10-32 shows a
PDSE created 2004-11-04 with SMS.IND=R (SDB) and block size 32720.
Norbert Friemel
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