Originally posted by: arappoport
I am gathering some technical information around Cache Partition Manager (CPM) on AMS2000 family and how to match it end to end with known applications. (End2End: app>OS>LVM>HBA>fabrics>AMS cache...)
I am stuck on some HDS recommendations to set the cache segment to twice the Host I/O block size.
example: if Host I/O is 4KB, then HDS recommends to set the cache segment size at 8KB.
Would anyone be able to share some light on the reasoning? Or even better, some real life benchmarks?