On Mon, 8 Mar 2021 11:15:56 -0600, Nigel Morton wrote: >Have you considered using extended format sequential striped data sets? > >Define using a data class with DSNTYPE set to require or request extended >format; control the number of stripes (which are read in parallel) using a >storage class with a non-zero sustained data rate attribute. Choosing the >value of the sustained data rate is a little clumsy but, in brief, 8 gives two >stripes and 12 gives 3 stripes for 3390 device geometry. > >Last time I looked, the throughput scaled roughly linearly with the number of >stripes. > I stand corrected vis-à-vis my pessimism: On Sun, 7 Mar 2021 15:42:33 -0600, Paul Gilmartin wrote: > ... >Don't know about striped RAID. I suspect there's no software support >for the desirable parallel I/O.
Are such data sets compatible with Classic utilities such as IEBGENER or Assembler programs using QSAM? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
