What type of hardware are you using for z/OS DASD? EMC, IBM,HDS< etc...
The RMF details show what z/OS is seeing, but there is also inside the array that may need to be included. If you have hot spots inside the array, you need to know that as well as when z/OS seems to think there are performance concerns. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Toni Cecil > Sent: Thursday, June 25, 2015 8:03 AM > To: [email protected] > Subject: z/OS DASD: Way to gather DASD Response Time ? > > Hello, > can you pls tell me what is best (and easiest) way to gather dasd response > time values by StorageGroup?? We need to have a DASD PERFORMANCE > "picture" > for 2 weeks and by storageGRoup. > > I'm only thinking off RMF's "D I R E C T A C C E S S D E V I C E A C > T I V I T Y " > > Any hint is welcome. > Many thx, A.Cecilio. > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
