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
