drivesWC/DC
46 | Barracuda 4 Installation Guide, Rev. E |
Setting the SCSI ID jumpers
The SCSI ID for WC and DC drives is normally set over the SCSI bus by the host system using connector contacts 39 (ID0), 40 (ID2), 79 (ID1), and 80 (ID3). Systems designers may, optionally, install a remote operator panel connection to set the SCSI ID. Figure 21 illustrates the SCSI ID pins used for this purpose.
Terminating the drive
ST15150WC and ST15150DC drives do not have inter- nal terminators or any other way of adding internal termination to the drive. You must provide
Synchronizing spindles
Spindle synchronization for WC and DC drives is nor- mally handled on the SCSI bus by the host system using connector contact 37 for the spindle sync reference signal. System designers may, optionally, install a spindle sync cable using pin 6 on the J4 connector to provide +SSREF (see Figure 21).
