Seagate Elite 9 User Manual download pdf (Page 36)

Installation 31

For each drive in the middle of the daisychain, the cable from the preceding unit

connects to one of the two rows of pins (row A or row B), and the cable to the

next unit connects to the other row of pins.

There are two ways to establish a drive as a master (supplying the sync

reference signal to all drives connected for spindle sync).

• Remove the jumper connecting the Master/Slave pins on connector J4A. The

drives are shipped with the pins disconnected.

• Issue that drive a Mode Select command on the SCSI interface. (The jumper

must be connecting the Master/Slave pins.) The spindle sync is controlled by

the RPL bits in page 4, byte 17 of the Mode Select (or Mode Sense)

parameters.

Only one drive in the daisychain can be established as the master. The master

drive can be located anywhere along the daisychain cable as long as both ends

of the cable are terminated.

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Seagate Elite 9 User Manual Page 36