Replacing an i/o module, Scsi address map – Compaq 4200 Family User Manual
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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