Hi,  Can you tell me that: 1. What's your metalun type? Is it the striped metalun or concatenated metalun? 2. Was the array installed navisphere analyzer enabler license or not? 3. What's your application pattern? OLTP/backup/video image or ...? Random or sequential or mixed application? 4. Is your IT environment met EMC support matrix (including host/switch)?  Your description is general. I can't give the exact suggestion. If you have emcgrab/switch log and SPCollect log and navisphere analyzer data (performance log of the array), that will help us to address your problem.  Thks.  Rgds, WW
i have a Metalun with 6 lun components , the las 2 components of this Metalun, are having  utilization at almost at 99% the metalun is experience low performance accessing it from a linux server, are those two last luns components the cause of this delaym how to prove this thanks.
CX4-120 in analyzer what item do i need to check poor performance in METALUN