IBM 86601RU Hardware Maintenance Manual - Page 258
SCSI backplane option jumpers, Table 11. Backplane Option Jumper Block
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SCSI backplane option jumpers The option jumper block on the SCSI backplane defines the SCSI IDs for hot-swap drives. See the illustration in "SCSI backplane component locations" on page 249 for the location of the option jumper block. Table 11 summarizes the settings for the SCSI backplane option jumper block (J10). Table 11. Backplane Option Jumper Block Pins Description 1-2 Reserved. 3-4 Reserved 5-6 Placing a jumper on these two pins enables SCSI IDs 8-13 7-8 Reserved. 9-10 Reserved. 11-12 Placing a jumper on these two pins reverses the SCSI IDs on the backplane. Note: The default is no jumpers installed on the J10 jumper block. Table 12 shows the SCSI IDs that you can use for hot-swap drives. Table 12. SCSI IDs for Hot-Swap Drives J10 J10 Bay Bay Bay Bay Bay Bay Pins Pins 1 2 3 4 5 6 5-6 11-12 No No 0 1 2 3 4 5 jumper jumper No Jumper 5 4 3 2 1 0 jumper Jumper No 13 12 11 10 9 8 jumper Notes: 1. No jumper on pins 5-6 and 11-12 is the default. 2. Jumpers on pins 5-6 and 11-12 is not supported. 250 Netfinity Server HMM