Adaptec AHA-2940 - SCSI Card Installationsanleitung PDF herunterladen (Seite 6)

Installing SCSI Devices

You can connect up to a total of seven internal and

external 8-bit SCSI devices to the AHA-2940Ultra, and

up to 15 devices (seven 8-bit internal and eight Wide

(16-bit) internal or external SCSI devices, or 15 Wide

internal and external SCSI devices) to the

AHA-2940Ultra Wide.

Choosing SCSI Cables

The cables required to connect SCSI devices are

determined by the type of devices you are installing,

as described in the following table.

If you purchased your AHA-2940Ultra/2940Ultra

Wide in an Adaptec kit, the kit includes an internal

SCSI cable that allows you to connect up to two

internal SCSI devices (the AHA-2940Ultra kit

includes a 50-pin internal SCSI cable, and the

AHA-2940Ultra Wide kit includes both a 50-pin and

a 68-pin internal SCSI cable). If you are connecting

more than two internal SCSI devices, you must

obtain an internal SCSI cable with enough connec-

tors to accommodate all of your devices.

Adaptec sells high-quality internal and external SCSI

cables. If your reseller does not stock these cables,

call Adaptec directly at the number for ordering

Adaptec software and cables listed on page 12.

When Fast SCSI devices are connected to the host

adapter, the total length of all cables (internal and

external) must not exceed 3 meters (9.8 ft.) to ensure

reliable operation. If no Fast SCSI devices are con-

nected, the total length of all cables must not exceed

SCSI Device Type AHA-2940Ultra AHA-2940Ultra

Wide

8-bit Internal SCSI 50-pin internal

SCSI cable

50-pin internal

SCSI cable

8-bit External SCSI 50-pin high-density

external SCSI cable

—

16-bit Internal

Wide SCSI

— 68-pin internal

SCSI cable

16-bit External

Wide SCSI

— 68-pin external

SCSI cable

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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