Yes, of course. And by the way, encryption (with any decent algorithm) will render the data "incompressible*". To coin a word... spell-check suggests "incomprehensible" (well, duh.. :-).
IBM has wisely implemented their new Data Set Encryption to be done after Data Set Compression is done. And warns that for manual operations, you'd best not do it the other way around. *Friday etymology: "uncompressible" would imply to me "capable of being uncompressed". Not a terribly useful concept, but there you are. sas On Fri, Sep 15, 2017 at 12:44 PM, retired mainframer <retired-mainfra...@q.com> wrote: > Doesn't it depend on the quality of both compression algorithms? In the > literature I've seen, attempting to compress "dense" data can actually > produce output larger than the input. > >> -----Original Message----- >> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On >> Behalf Of Buckton, T. (Theo) >> Sent: Friday, September 15, 2017 5:45 AM >> To: IBM-MAIN@LISTSERV.UA.EDU >> Subject: zEDC Compression & DFSMSDSS Move >> >> Hi, >> >> Just one question... Will a dataset that was previously created with > generic or tailored >> compression, be further compressed if it is copied with DFSMSDSS and with > zEDC >> enabled? > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- sas ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
