Lizzette, I've always run HSM below my onlines and above batch in terms of WLM. Works fine. The only time you would have a problem is if your SYSSTC workload is consuming 100% CPU. Surely that is not the case?
If you are CPU constrained then you might throttle back Interval Migration - Maxintervaltask(1). Better yet, do you really need to run Interval Migration? Check your HSMACT.. logs to see if any data is actually being migrated. Check the Customization manual for the patch to run Interval every 3 or 6 hours rather than hourly or just turn it off. Dave O'Brien NIH Contractor ________________________________________ From: IBM Mainframe Discussion List [[email protected]] On Behalf Of Traylor, Terry [[email protected]] Sent: Monday, May 11, 2009 1:41 PM To: [email protected] Subject: Re: DFHSM and WLM Settings Lizette, Consider setting up an auxiliary address space to run your daily processing in a lower service class. That way you can allow your primary HSM to perform recall processing in it's a higher service class. Terry Traylor charlesSCHWAB TIS Mainframe Storage Management Remedy Queue: tis-hs-mstg (602) 977-5154 -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Lizette Koehler Sent: Monday, May 11, 2009 10:00 AM To: [email protected] Subject: DFHSM and WLM Settings I ran into a small issue where when using Interval Migration DFHSM took all the resources on my small LPAR. Even on my largest LPAR it still consumes a lot of resources. IBM Suggested I set DFHSM to STCMED. My concern is that since we have a lot of tasks in WLM at SYSSTC (not my choice) that if a recall or migrate was requested, that DFHSM might be impacted by the other high runnings tasks. Has anyone delt with Interval Migration and controlling it via WLM? Does anyone else have DFHSM in STCMED and if so, how is that working for DFHSM. Lizette ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] 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 [email protected] 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 [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
