Figure 6.2 MegaRAID SCSI 320-2 Controller Layout

J4 J5

Internal High-Density

 

SCSI Connectors

J2

 

 

J3

External

Very-High

Density

SCSI

Connectors

Channel 0

Channel 1

Channel 0

Channel 1

DIMM Socket

J10

J17 J16

J18

6.2.4.1J2 SCSI Activity LED

J2 is a four-pin connector that attaches to a cable that connects to the hard disk LED mounted on the computer enclosure. The LED indicates data transfers (SCSI bus activity.)

6.2.4.2J3 Dirty Cache LED

J3 is a two-pin header for the dirty cache LED. This can be connected to an LED on the computer enclosure. The LED will be lit when data in the cache has not yet been written to the storage device.

6.2.4.3J4/J5 Termination Enable

J4 and J5 are three-pin headers that specify the type of SCSI termination for channel 0 and channel 1, respectively. Table 6.3 shows the jumper

6-6

Hardware Installation

Copyright © 2002 by LSI Logic Corporation. All rights reserved.