Hi Gurus, I am working on Performance improvement related to Input/Output and Storage layout and planning to prepare a brief excel with server info and disk details where and how control files, redo log, datafiles, and archive logs mirroring with SAN/local disks. I am a newbie to PT and need inputs how well information can be captured/collected in first place and based on that how the improvements can be done? Please provide your inputs,guidance,pointers and light to proceed. Thanks, Ann