https://community.hpe.com/t5/operating-system-hp-ux/hp-ux-11-31-and-ibm-ds5100/m-p/4390686#M350185 The DS5100 is a "double" DS4800. You are correct on the approach about using the prefered path (array controller ownership) as the primary path in PVlinks and the alternate path as the alternate link.<BR /><BR />If you have not yet, install the IBM storage manage software on the HP server. After running ioscan and insf, run the SMdevices utility to get a listing that maps the LUN names to UNIX disk device files. The hot-add utility does all 3 commands in sequence.<BR /><BR />One very important thing is to run pvcreate only on the prefered path device (primary LVM path). If you don't, the array will sence the i/o on the alternate path and change controller ownership. (If thios happens, no big deal, go the storga manager and change it back). Mon, 30 Mar 2009 18:21:49 GMT TTr 2009-03-30T18:21:49Z https://community.hpe.com/t5/operating-system-hp-ux/hp-ux-11-31-and-ibm-ds5100/m-p/4390685#M350184 I checked the IBM website. It seems that only PVlink is supported. Here is my question, if 11.31 native multi-path doesn't support the array, what is the correct procedure to use just PVlink?<BR />I assume I can just use multiple conventional device file with the one on prefered path as the primary device file. Any other configuration needs to be taken into configuration?<BR />Thanks.<BR />Alex Mon, 30 Mar 2009 17:28:25 GMT https://community.hpe.com/t5/operating-system-hp-ux/hp-ux-11-31-and-ibm-ds5100/m-p/4390685#M350184 AlexZhang 2009-03-30T17:28:25Z https://community.hpe.com/t5/operating-system-hp-ux/hp-ux-11-31-and-ibm-ds5100/m-p/4390686#M350185 The DS5100 is a "double" DS4800. You are correct on the approach about using the prefered path (array controller ownership) as the primary path in PVlinks and the alternate path as the alternate link.<BR /><BR />If you have not yet, install the IBM storage manage software on the HP server. After running ioscan and insf, run the SMdevices utility to get a listing that maps the LUN names to UNIX disk device files. The hot-add utility does all 3 commands in sequence.<BR /><BR />One very important thing is to run pvcreate only on the prefered path device (primary LVM path). If you don't, the array will sence the i/o on the alternate path and change controller ownership. (If thios happens, no big deal, go the storga manager and change it back). Mon, 30 Mar 2009 18:21:49 GMT https://community.hpe.com/t5/operating-system-hp-ux/hp-ux-11-31-and-ibm-ds5100/m-p/4390686#M350185 TTr 2009-03-30T18:21:49Z