Compaq 4200 Family - Manual (Page 28)

3–4 Enclosure 4200 Family LVD Disk Enclosures User Guide
SCSI Address Map
The module assigns a SCSI address to each drive bay in the enclosure using a SCSI
address map. The active map (see Table 3–2) is determined by a combination of:
■ Backplane
■ EMU
■ I/O module
Each disk drive bay and each controller has a SCSI bus ID. The factory-assigned disk
enclosure addresses are shown in Table 3–2.
Replacing an I/O Module
Replacing an I/O module requires you to order a replacement using the spare part number
(see Chapter 6, “Replacing CRUs”).
Each I/O module replacement kit contains detailed replacement instructions.
Table 3–1 Single-Bus Module LED Displays
LEDs Definition
Operational Status LED Displays
Terminator enabled (LED O N )
Module power present (LED O N )
Terminator enabled (LED O N )
EMU locating module (LED F LASHING )
Nonoperational Status LED Display
No module power
Module nonoperational
Table 3–2 Disk Enclosure Bay Addresses
Bay 1 2 3 4 5 6 7 8 9 10 11 12 13 14
SCSI
ID
00 01 02 03 04 05 08 09 10 11 12 13 14 15