Mean Time Between Failures (MTBF)
Table 44: 5520 MTBF
Ambient
Temp =
25°C
5520-24T
5520-24W 5520-24X
5520-12M
W-36W
5520-48T
5520-48W 5520-48SE
System
base
(all boards,
modules
excluded)
545,928
480,404
633,004
392,662
506,767
417,304
531,218
Complete system - A
(system base+full fans+1 PSU)
One
2000W
PSU
185,080
174,532
179,138
One 1100W
PSU
212,906
199,067
205,081
One 715W
PSU
218,879
204,272
210,617
One 350W
PSU
270,711
193,198
236,070
169,687
Complete system - B
(system base+ full fans+2 PSUs)
Two
2000W
PSU
123,936
119,115
121,243
Two 1100W
PSU
150,232
143,607
146,293
Two 715W
PSU
156,248
148,663
151,992
Two 350W
PSU
184,380
193,198
167,627
169,687
Note
5520-24X and 5520-24T models have 2 fan slots; All other models have 3.
CPU and Memory
Table 45: CPU, Memory
CPU/Memory
1-core, 1.7GHz x86 ARM CPU (Cortex A72)
2 GB DDR4 ECC memory
Mean Time Between Failures (MTBF)
Technical Specifications
132
ExtremeSwitching 5520 Series Hardware Installation Guide