https://community.hpe.com/t5/integrity-servers/p400-controller-and-channels-for-performance/m-p/4497156#M5552 Since it's SAS each disk has it's own channel. SFF-8484 (which is the connection on your P400) is 4 channel multilane, so it shouldn't make a difference. Fri, 23 Oct 2009 19:14:36 GMT T.Daniels 2009-10-23T19:14:36Z https://community.hpe.com/t5/integrity-servers/p400-controller-and-channels-for-performance/m-p/4497155#M5551 Hi<BR />rx2660 server <BR />OpenVMS 8.3-1h1<BR />P400 controller with 256Mb BBWC<BR /><BR />I want to get the best performance with a raid 1 (mirror) disk configuration on a P400 controller. Do I put disk 1 on the A channel(position 1 on disk rack) and disk 2 on B channel(position 5)?<BR /><BR />If this information is available somewhere, can someone point me to it?<BR />TIA<BR />Steve Mon, 14 Sep 2009 17:39:00 GMT https://community.hpe.com/t5/integrity-servers/p400-controller-and-channels-for-performance/m-p/4497155#M5551 paquins 2009-09-14T17:39:00Z https://community.hpe.com/t5/integrity-servers/p400-controller-and-channels-for-performance/m-p/4497156#M5552 Since it's SAS each disk has it's own channel. SFF-8484 (which is the connection on your P400) is 4 channel multilane, so it shouldn't make a difference. Fri, 23 Oct 2009 19:14:36 GMT https://community.hpe.com/t5/integrity-servers/p400-controller-and-channels-for-performance/m-p/4497156#M5552 T.Daniels 2009-10-23T19:14:36Z