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
Bay1234567891011121314
SCSI
ID
00 01 02 03 04 05 08 09 10 11 12 13 14 15
