Barracuda 9 Installation Guide, Rev. B

33

N drives

Terminating the drive

ST19171N drives are terminated with permanently mounted IC active terminators. If you install one of these drives and it is not on the end of the SCSI bus, disable the terminators by removing the jumper from pins 15 and 16 of connector J2 (see Figure 6). If you install the drive on the end of the SCSI bus, enable termina- tion by installing a jumper on pins 15 and 16 of connector J2.

Pin 1

J2

R

 

T D M W P E T T

 

E S E P D S P P

Enable SCSI terminator (default)

 

Disable SCSI terminator

 

J6

J2

SCSI I/O J1

 

 

Connector

Drive

 

Front

 

J2 Jumper Type

DC Power

Connector

(enlarged to

 

show detail)

 

Figure 6. Terminating the drive

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Seagate ST19171DC, ST19171N, ST19171WD, ST19171WC manual Terminating the drive