HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 Service Manual (A5 - Page 145

Installation a low range of IDs (0, 1, 2, 3, and 4) and a high range of IDs (8, 9, 10, 11, and 12). (BCCs are also provided addresses as shown in Table 19). Note that the SCSI IDs do not correspond to the physical slot number. The assignment of the SCSI IDs differs depending on whether the enclosure is operating in full-bus or split-bus mode. When full-bus mode is selected, the low ID range (0 - 4) is assigned to the even disk slots, and the high range (8 - 12) is assigned to the odd slots. See Table 19. When the disk enclosure is in split-bus mode, the low ID range is assigned to both the even slots and the odd slots. This is possible because the two busses are isolated within the enclosure. See "How are disk modules in the array identified?" on page 190 for additional disk module addressing information. Table 19 Disk Slot, Full-Bus/Split-Bus Mode, SCSI IDs Physical Disk Slot #s BCC 0 1 2 3 4 5 6 7 8 9AB BCC A (or B) Full-Bus Mode SCSI IDs 0 8 1 9 2 10 3 11 4 12 14 15 Split-Bus Mode SCSI IDs BCC-A (Even Slots) 0 - 1 - 2 - 3 - 4 - 15 - BCC-B (Odd Slots) - 0 - 1 - 2 - 3 - 4 - 15 Fibre Channel Host ID Address Setting The controller enclosure has two Fibre Channel connections, one for each controller module. Each controller module communicates with the host through its Fibre Channel loop connection. Internally the two controllers are connected to a common Fibre Channel loop. Because they are connected to a common loop, each controller module must have a unique Fibre Channel Host ID. The Fibre Channel Host IDs are selected by two separate DIP switches located on the back of the controller enclosure. See Figure 56. Switch Host ID BD1 SW1 selects the address for Configuration Switches 145