Yes, there are two ways to do this (again, "only at the direction of EMC Performance Engineering")  1) Via Navisphere GUI:  a) Enter Engineering mode b) From a (traditional) RAID Group, bind LUN c) Element Size field is exposed along with a pull-down that only allows the following values:  4, 8, 16, 32, 64, 128, and 256   2) Via navi(sec)cli Using the -elsz parameter with the bind command (not supported on AX series)
Hi All,  I have run Analyzer and noticed a lot of LUNs doing about 40% disk crossing. In Flare 30, how can i change the element size so that IO doesnt always split across more that one disks, or at least reduce it.  Thanks
Disk crossings and element size