Table 30: N+0 AC Power Calculations for 32-Port EX4300 Switches
Base Power
(in watts)
Backup
Power (in
watts)
System Power
Budget (in
watts)
Total Power (in
watts)
PSU
0
(W) +
PSU
1
(W)
Power Supply Rating
PSU
1
PSU
0
164
0
350
350
–
350 W AC
164
0
665
700
350 W AC
350 W AC
Table 31 on page 51
lists the
N
+0 power calculation for 48-port EX4300 switches that
use 350 W AC, 715 W AC, and 1100 W AC power supplies.
Table 31: N+0 AC Power Calculations for 48-Port EX4300 Switches
Ports
Enabled
for PoE+
Available
PoE Power
(in watts)
Base
Power (in
watts)
Backup
Power
(in
watts)
System
Power
Budget (in
watts)
Total Power
(in watts)
PSU
0
(W) +
PSU
1
(W)
Power Supply Rating
PSU
1
PSU
0
5
175
175
0
350
350
–
350 W AC
16
490
175
0
665
700
350 W AC
350 W AC
27
818.5
175
0
993.5
1065
715 W AC
350 W AC
18
540
175
0
715
715
–
715 W AC
39
1183.5
175
0
1358.5
1430
715 W AC
715 W AC
48
1530
175
0
1705
1815
1100 W AC
715 W AC
30
925
175
0
1100
1100
–
1100 W AC
48
1915
175
0
2090
2200
1100 W AC
1100 W AC
38
1165
175
0
1340
1450
350 W AC
1100 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.
You can configure the power management software to manage switch power for
N
+
N
redundancy. When you configure power management for
N
+
N
redundancy, half of the
total power available (
N
) is held as reserve power while the other half (
N
) is available
for immediate consumption. If the switch configuration changes and requires additional
power, then additional power is drawn from the reserve power, and the switch no longer
51
Copyright © 2015, Juniper Networks, Inc.
Chapter 4: Power Supplies
Summary of Contents for EX4300
Page 1: ...EX4300 Switch Hardware Guide Modified 2015 06 29 Copyright 2015 Juniper Networks Inc ...
Page 16: ...Copyright 2015 Juniper Networks Inc xvi EX4300 Switch Hardware Guide ...
Page 22: ...Copyright 2015 Juniper Networks Inc xxii EX4300 Switch Hardware Guide ...
Page 24: ...Copyright 2015 Juniper Networks Inc 2 EX4300 Switch Hardware Guide ...
Page 102: ...Copyright 2015 Juniper Networks Inc 80 EX4300 Switch Hardware Guide ...
Page 104: ...Copyright 2015 Juniper Networks Inc 82 EX4300 Switch Hardware Guide ...
Page 128: ...Copyright 2015 Juniper Networks Inc 106 EX4300 Switch Hardware Guide ...
Page 172: ...Copyright 2015 Juniper Networks Inc 150 EX4300 Switch Hardware Guide ...
Page 176: ...Copyright 2015 Juniper Networks Inc 154 EX4300 Switch Hardware Guide ...
Page 218: ...Copyright 2015 Juniper Networks Inc 196 EX4300 Switch Hardware Guide ...
Page 236: ...Copyright 2015 Juniper Networks Inc 214 EX4300 Switch Hardware Guide ...
Page 238: ...Copyright 2015 Juniper Networks Inc 216 EX4300 Switch Hardware Guide ...
Page 250: ...Copyright 2015 Juniper Networks Inc 228 EX4300 Switch Hardware Guide ...
Page 256: ...Copyright 2015 Juniper Networks Inc 234 EX4300 Switch Hardware Guide ...
Page 278: ...Copyright 2015 Juniper Networks Inc 256 EX4300 Switch Hardware Guide ...
Page 286: ...Copyright 2015 Juniper Networks Inc 264 EX4300 Switch Hardware Guide ...
Page 292: ...Copyright 2015 Juniper Networks Inc 270 EX4300 Switch Hardware Guide ...
Page 306: ...Copyright 2015 Juniper Networks Inc 284 EX4300 Switch Hardware Guide ...
Page 312: ...Copyright 2015 Juniper Networks Inc 290 EX4300 Switch Hardware Guide ...
Page 336: ...Copyright 2015 Juniper Networks Inc 314 EX4300 Switch Hardware Guide ...