N+N Redundancy Configuration Of Ac Power Supplies - Juniper QFX5110 Series Hardware Documentation

Table 57: N+0 AC Power Calculations for EX4300-48MP and EX4300-48MP-S Switches
Power Supply Rating
PSU PSU
0 1
715 W AC –
715 W AC 715 W AC
715 W AC 1100 W AC
715 W AC 1400 W AC
1100 W AC –
1100 W AC 1100 W AC
1100 W AC 1400 W AC
1400 W AC –
1400 W AC 1400 W AC

N+N Redundancy Configuration of AC Power Supplies

You can configure your switch for N+N redundancy, in which N power supplies can be removed or fail and
the remaining N power supplies continue to supply power to the switch without interruption.
Table 58 on page 177 lists the N+N power calculation for 24-port EX4300 switches that use 350 W, 715 W,
and 1100 W power supplies.
Table 58: N+N AC Power Calculations for 24-Port EX4300 Switches
Power Supply Rating
PSU
PSU
0
350 W AC –
Total
Power (in
watts)
Usable
PSU (W)
System
0
+
Power
PSU (W)
(in watts)
1
715 679
1430 1358
1815 1615
2115 1615
1100 1045
2200 1670
2500 1670
1400 W 1330
AC
2800 2000
Total
Power (in
watts)
1
350
Backup Base
Power Power
(in (in
watts) watts)
0 300
0 300
0 300
0 300
0 300
0 300
0 300
0 300
0 300
Usable Backup
System Power
Power (in (in
watts) watts)
350 0
Available Ports
PoE Enabled
Power (in for
watts) PoE+
379 12
1058 35
1315 43
1315 43
745 24
1370 45
1370 45
1030 34
1700 48
Available
Base PoE
Power (in Power (in
watts) watts)
150 200
177
Ports
Enabled
for
PoE++
3
11
13
13
7
14
14
10
17
Ports
enabled
for
PoE+
6