Seagate ST318418N, ST318438LW, ST336938LW manual Scsi daisy chain interface cabling for N drives

62 Barracuda 36ES2 Product Manual, Rev. B

’N’ Model

Drive

[6]

[1]

2 through X SCSI devices [4]

SCSI ID 7 [5]

Pin 1

(check your

adapter for Pin 1 location)

[1]

Host

Adapter

PCB

[3]

[2]

SCSI ID 1

SCSI ID 0

[1]Closed end type 50-pin connector used. Terminators enabled.

[2]Open end type (in-line application) connector used. Terminators disabled.

[3]Host need not be on the end of the daisy-chain. Another device can be on the end with the terminator, the host having no terminator.

[4]Total interface cable length must not exceed that specified in ANSI document X3T10/1302D (including host adapter/initiator). The cable length restriction limits the total number of devices allowed.

[5]SCSI ID7 has highest arbitration priority, ID0 has lowest arbitration priority.

[6]Last drive on the daisy chain.

Figure 19. SCSI daisy chain interface cabling for N drives