I have MIDAW on. Haven't done PAV yet. It was a charge feature and we didn't get it, then "they" didn't tell me it when it became available when for some reason or other. Now, I'll probably/possibly use it on the DMX-4 we will be installing soon.
Dave Gibney Information Technology Services Washington State University > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Skip Robinson > Sent: Friday, June 22, 2012 1:05 PM > To: [email protected] > Subject: Re: Have you enabled MIDAW and zHPF? If not, why not? > > I don't believe that MIDAW is a charged feature on IBM DASD. Health check > IOS_MIDAW flags 'off' as a low exception. The other features may be a > different matter. > > . > . > JO.Skip Robinson > SCE Infrastructure Technology Services > Electric Dragon Team Paddler > SHARE MVS Program Co-Manager > 626-302-7535 Office > 323-715-0595 Mobile > [email protected] > > > > From: Mark Zelden <[email protected]> > To: [email protected] > Date: 06/22/2012 08:27 AM > Subject: Re: Have you enabled MIDAW and zHPF? If not, why not? > Sent by: IBM Mainframe Discussion List <[email protected]> > > > > On Fri, 22 Jun 2012 09:47:32 -0500, Thomas Conley > <[email protected]> wrote: > > >I'd like to take a private survey to determine which sites have enabled > both MIDAW and zHPF, or if you haven't enabled either or both, why. It's > come to my attention that some sites may not have enabled these options. > In the case of MIDAW, you have to take action to place MIDAW=NO into > IECIOSxx, but for zHPF, you have to turn it on with ZHPF=YES in IECIOSxx. > Both options can significantly lower your I/O overhead and increase > throughput, and I haven't come up with a reason for not enabling them. > > > >Please respond to me privately off-list. I will keep your information > confidential. I am thinking about presenting a recommedation to turn on > both options for the Bit Bucket at SHARE in Anaheim. > > > > I think you should include HYPERPAV in that same survey. I think the > reason > you will find people don't have zHPF and/or HIPERPAV active is they are > not free HW features. I don't know if the vendors charge for MIDAW or > not, or if it just takes the proper HW / code levels to support it. > > -- > Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS > mailto:[email protected] > Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html > Systems Programming expert at http://expertanswercenter.techtarget.com/ > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
