HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 - (English) Advanc - Page 209

Installation The port value will always be 255 when using PDA. The loop address, Fibre Channel Host ID of the disk array controller module (two address possible, one for controller module A and one for module B), is encoded in the Bus and Target segments of the hardware path. For example, in the hardware path shown in Figure 80, the Bus value of 1 and Target value of 2 result in a loop ID of 18: BUS 0 0 0 1 TARGET LOOP ID 0 0 1 0 = 18 Volume Set Addressing Volume set addressing (VSA) is used to address disk array LUNs. A disk array LUN can be identified in the ioscan output as an entry with a driver type of sdisk and a description of HP A5277A. The LUN number is encoded in the Volume Number segments of the hardware path. Figure 81 illustrates the interpretation of the fields in the hardware path when using VSA. Volume Set Addressing (VSA) Hardware Path 8/12.8.0.6.0.1.3 Volume Number bits 0 - 2 (LUN number 0 - 7) Volume Number bits 3 - 6 (virtual SCSI bus 0 - 3) Volume Number bits 7 - 13 (always 0 for the FC60) Loop ID of controller module Area (0 = point-to-point or private loop) Protocol Type (8 = mass storage) Adapter Bus Converter Figure 81 Volume Set Addressing Hardware Path Verifying Disk Array Connection 209