Hello and thanks for the time and information. Ed Martin Aultman Health Foundation 330-588-4723 [EMAIL PROTECTED] ext. 40441
>> -----Original Message----- >> From: VM/ESA and z/VM Discussions [mailto:[EMAIL PROTECTED] On >> Behalf Of Rob van der Heij >> Sent: Monday, February 06, 2006 5:02 PM >> To: [email protected] >> Subject: Re: Expanded Storage >> >> On 2/6/06, Edward M. Martin <[EMAIL PROTECTED]> wrote: >> >> > Is this true even on a large cache DASD subsystem? And if it >> is, >> > Is this because page data sets are not cached? And finally, >> >> You're right that with faster DASD it is not obvious that MDC still >> has value. The side effect we were discussing here is one reason, but >> there are other reasons. >> >> > Why are PDS's not cached? >> >> VM paging is not eligable for MDC, that's just for virtual machine >> I/O. But the paging routines use other techniques to exploit the >> hierarchy in storage and drive I/O efficiently. >> >> Rob >> -- >> Rob van der Heij rvdheij @ gmail.com >> Velocity Software, Inc
