Ac power buses, Figure 6–4 enclosure ac power buses, Ac power buses –6 – HP Array Controller HSG V8.7 Software User Manual
Page 132: Figure 6–4 enclosure ac power buses –6, Power distribution, 1) uses black power cords and power bus b (c
Power Distribution
6–6 UltraSCSI RAID Enclosure
AC Power Buses
AC power distribution to the UltraSCSI shelf power supplies is
distributed over two power buses—bus A and bus B (see Figure 6–4).
Each power bus has an ac power source, a separate ac input box,
power supplies, and power cords.
Figure 6–4
Enclosure AC Power Buses
Although the standard (n+1) power configuration can operate the
subsystem via power bus A (C
ALLOUT
1), Compaq recommends
using both power buses with two ac power sources—the optimum
power configuration (n+4).
Power bus A (C
ALLOUT
1) uses black power cords and power bus B
(C
ALLOUT
2) uses grey power cords. These colored cords indicate the
power bus being used:
•
AC input box A controls power bus A—power supply positions
1A through 5A (n+1 configuration in Figure 6–4)
•
AC input box B controls power bus B— power supply positions
1B through 4B (n+4 configuration in Figure 6–4)
n+1 Configuration
n+4 Configurations
Figure C
ALLOUTS
1.
Power bus A
2.
Power bus B
17
11
CXO6301B
19 20 21 22 23 24
13 14 15 16
18
7
8
9
10
12
1
2
3
4
5
6
A
4A
3A
2A
1A
5A
Shelf 4
Shelf 3
Shelf 2
Shelf 1
1
17
11
CXO6482B
19 20
21 22 23 24
13 14
15 16
18
7
8
9
10
12
1
2
3
4
5
6
Controller A
Controller B
EMU
PVA
Cache B
Cache A
A
B
4A
3A
2A
1A
3B
2B
1B
4B
Shelf 4
Shelf 3
Shelf 2
Shelf 1
1
2