UniFi Switch 16 XG LNA addition
Table of Contents
As previously described, I had replaced the fans in my UniFi US-16-XG, but until today I had not put in any low noise adapters (LNA).
That changed today, I added two LNA NA-RC10 (8.3 m³/h, 12.2 dbA) because the switch is still the most noisy piece of equipment in my homelab.
Before LNA Addition
Quick look at fans and temperatures before adding the LNAs. Before LNA addition my Noctua NF-A4x20 FLX fans (9.4 m³/h, 14.9 dBA) handled cooling decently but the noise was still annoying me.
$ ssh sw-10g.mgmt.pcfe.net -l admin swctrl env show
General Temperature (C): 58
Temp Sensor Temp (C) State Max Temp (C) Alert Temp (C)
=============== =========== =============== ============ ==============
PHY 58 Normal 64 75
REAR 44 Normal 50 75
CPU 43 Normal 49 75
Fan Duty Level: 67
Fan Speed Duty level State
=============== ========== ========== ===============
FAN-1 5465 67 Operational
FAN-2 5465 67 Operational
After LNA Addition
Right After the Modification
The switch had time to cool down while I did the hardware modification.
$ ssh sw-10g.mgmt.pcfe.net -l admin swctrl env show
General Temperature (C): 47
Temp Sensor Temp (C) State Max Temp (C) Alert Temp (C)
=============== =========== =============== ============ ==============
PHY 47 Normal 47 75
REAR 35 Normal 35 75
CPU 33 Normal 33 75
Fan Duty Level: 54
Fan Speed Duty level State
=============== ========== ========== ===============
FAN-1 4390 54 Operational
FAN-2 4368 54 Operational
After 5 Minutes Uptime
still warming up
$ date ; ssh sw-10g.mgmt.pcfe.net -l admin swctrl env show
2021-11-21T13:28:25 CET
General Temperature (C): 51
Temp Sensor Temp (C) State Max Temp (C) Alert Temp (C)
=============== =========== =============== ============ ==============
PHY 51 Normal 51 75
REAR 38 Normal 38 75
CPU 35 Normal 35 75
Fan Duty Level: 59
Fan Speed Duty level State
=============== ========== ========== ===============
FAN-1 4526 59 Operational
FAN-2 4518 59 Operational
After 15 Minutes Uptime
pcfe@t3600 ~ $ date ; ssh sw-10g.mgmt.pcfe.net -l admin swctrl env show
2021-11-21T13:38:14 CET
General Temperature (C): 60
Temp Sensor Temp (C) State Max Temp (C) Alert Temp (C)
=============== =========== =============== ============ ==============
PHY 60 Normal 60 75
REAR 44 Normal 44 75
CPU 41 Normal 42 75
Fan Duty Level: 69
Fan Speed Duty level State
=============== ========== ========== ===============
FAN-1 4795 69 Operational
FAN-2 4817 69 Operational
After 30 Minutes Uptime
$ ssh sw-10g.mgmt.pcfe.net -l admin uptime ; ssh sw-10g.mgmt.pcfe.net -l admin swctrl env show
13:52:59 up 30 min, load average: 0.13, 0.20, 0.16
General Temperature (C): 63
Temp Sensor Temp (C) State Max Temp (C) Alert Temp (C)
=============== =========== =============== ============ ==============
PHY 63 Normal 63 75
REAR 47 Normal 48 75
CPU 45 Normal 45 75
Fan Duty Level: 73
Fan Speed Duty level State
=============== ========== ========== ===============
FAN-1 4909 73 Operational
FAN-2 4922 73 Operational
After 1 Hour Uptime
$ ssh sw-10g.mgmt.pcfe.net -l admin uptime ; ssh sw-10g.mgmt.pcfe.net -l admin swctrl env show
14:23:41 up 1:01, load average: 0.31, 0.19, 0.20
General Temperature (C): 64
Temp Sensor Temp (C) State Max Temp (C) Alert Temp (C)
=============== =========== =============== ============ ==============
PHY 64 Normal 64 75
REAR 49 Normal 49 75
CPU 47 Normal 47 75
Fan Duty Level: 74
Fan Speed Duty level State
=============== ========== ========== ===============
FAN-1 4936 74 Operational
FAN-2 4936 74 Operational
After 2 Hours Uptime
$ ssh sw-10g.mgmt.pcfe.net -l admin uptime ; ssh sw-10g.mgmt.pcfe.net -l admin swctrl env show
15:31:02 up 2:08, load average: 0.14, 0.16, 0.14
General Temperature (C): 64
Temp Sensor Temp (C) State Max Temp (C) Alert Temp (C)
=============== =========== =============== ============ ==============
PHY 64 Normal 65 75
REAR 49 Normal 50 75
CPU 48 Normal 48 75
Fan Duty Level: 74
Fan Speed Duty level State
=============== ========== ========== ===============
FAN-1 4958 74 Operational
FAN-2 4945 74 Operational
After 3 Hours Uptime
$ ssh sw-10g.mgmt.pcfe.net -l admin uptime ; ssh sw-10g.mgmt.pcfe.net -l admin swctrl env show
16:22:45 up 3:00, load average: 0.23, 0.18, 0.15
General Temperature (C): 64
Temp Sensor Temp (C) State Max Temp (C) Alert Temp (C)
=============== =========== =============== ============ ==============
PHY 64 Normal 65 75
REAR 49 Normal 50 75
CPU 48 Normal 48 75
Fan Duty Level: 74
Fan Speed Duty level State
=============== ========== ========== ===============
FAN-1 4949 74 Operational
FAN-2 4945 74 Operational
After 7 Hours Uptime
$ ssh sw-10g.mgmt.pcfe.net -l admin uptime ; ssh sw-10g.mgmt.pcfe.net -l admin swctrl env show
20:22:52 up 7:00, load average: 0.16, 0.21, 0.18
General Temperature (C): 65
Temp Sensor Temp (C) State Max Temp (C) Alert Temp (C)
=============== =========== =============== ============ ==============
PHY 65 Normal 65 75
REAR 50 Normal 50 75
CPU 48 Normal 48 75
Fan Duty Level: 75
Fan Speed Duty level State
=============== ========== ========== ===============
FAN-1 4972 75 Operational
FAN-2 4958 75 Operational
Conclusion
So it looks like I gained ~7°C and lost ~500RPM on the fans, but they now run at ¾ of what they will maximally do.
I think I’ll remove the LNAs again in the next switch maintenance round.