GSG, For IBM, SUN/STK and HDS there is still a small benefit. While everything must go through cache with these controllers, DCME will influence where ICL and BC IO is placed in the LRU queue so that it will be cast out sooner than other normal IO.
You don't get a choice about whether it is implemented or not. DFSMS will use the MSR value in the STORCLAS to decide whether the dataset is Must, Maybe or never cache. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of > gsg > Sent: Thursday, September 10, 2009 3:08 PM > To: IBM-MAIN@bama.ua.edu > Subject: [IBM-MAIN] Dynamic Cache Management > > I was reading the Implementing System-Managed Storage book and came > accross Using Cache to improve performance, were it spoke about Dynamic > Cache Magagement. Is there still a benefit in implementing this? > PROS/CONS. Is anyone using this? Got any general guidelines for starting > out? > > TIA > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- 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
