IBM Mainframe Discussion List <IBM-MAIN@bama.ua.edu> wrote on 05/05/2010 11:16:18 PM:
> As far as VIO goes, it started outperforming standard disk from the day the > first 3090-200 shipped with expanded storage. With ES the VIO track window > was no longer written and discarded from storage when it was no used, but > was copied to from CS to ES. This meant that VIO stopped causing major page > thrashing, and the performance became incredibly good. Although ES is no > longer supported, IBM continue to keep VIO in CS as part of the working set. It was a few days later than that. SP2.1.3 (first release to support 3090 and ESTOR) did not have VIO to ESTOR. That came a few years via SPE: Apar: OY08837 Ext. Symptom: NF Symptom Keyword: FUNCTION Abstract: SUPPORT THE USE OF EXPANDED STORAGE FOR VIO PAGES RB20 PSY UY90242 UP88/07/05 P F806 RC10 PSY UY90243 UP88/07/05 P F806 Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
