Seagate ST31230WC, ST31230DC, ST31230WD, ST32430WD, ST32430DC manual Tors for single-ended I/O only

Models: ST31230DC ST31230W ST32430W ST31230WD ST32430DC ST31230WC ST32430WD ST32430WC

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Image 33

Hawk 2LP (Wide) Installation Guide, Rev. A

31

continued from previous page

 

I/O pin 26 to the drive's internal termina-

 

tors (for single-ended I/O only).

Off

See above explanations for TP jump

 

ers.

J1-Auxiliary

 

Jumper

Jumper Function Description ("W"

Installation

and "WD" models only)

A3,A2,A1,A0

Drive ID on SCSI Bus (J1-auxiliary or J6

 

may be used, as the ID circuits are wired

 

in parallel). The drive ID is binary coded

 

positionwise i.e. jumper in position A3 is

 

drive ID 8, A2 is drive ID 4, position A1 is

 

ID 2, position A0 is ID 1 and no jumpers

 

is ID 0. Default is ID = 0. Both J1-

 

auxiliary and J6 should not be used at

 

the same time, because at some future

 

time when the ID is changed the user

 

could fail to configure both J1-auxiliary

 

and J6 the same. "WC" and "DC" Mod-

 

els, do not have J1-auxiliary.

J6 Jumper

Jumper Function Description ("W"

Installation

and "WD" models only)

A3,A2,A1,A0

Drive ID on SCSI bus. Either J6 or J1-

 

Auxiliary (optional) may be used to

 

select drive ID. Both should not be used

 

at the same time, because at some

Page 33
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Seagate ST31230WC, ST31230DC, ST31230WD, ST32430WD, ST32430DC, ST32430WC manual Tors for single-ended I/O only