# Redundancy Thoughts - MQTT and NR

**URL:** https://discourse.nodered.org/t/redundancy-thoughts-mqtt-and-nr/35633
**Category:** General
**Created:** [9 November 2020 22:01 UTC](https://discourse.nodered.org/t/redundancy-thoughts-mqtt-and-nr/35633 "2020-11-09T22:01:31Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![edje11](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/edje11/32/572_2.png) [@edje11](https://discourse.nodered.org/u/edje11)
#### Post date: [10 November 2020 10:57 UTC](https://discourse.nodered.org/t/redundancy-thoughts-mqtt-and-nr/35633/2 "2020-11-10T10:57:35Z")

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First hit in the forum search: [Node Redundancy](https://discourse.nodered.org/t/node-redundancy/10762)

However it would be better to investigate why your pi lock up.  
The PI I'm using is running fine, maybe one's a year something strange that requires a reboot.  
Most problems are related to bad power supply.  
Check your power supply, and after that check you power supply again. Buy a good power supply with enough amps.  
Also buy a good Pro endurance SD card [https://www.amazon.com/Samsung-MB-MJ32G-MicroSDHC-UHS-I-Memory/dp/B07CY3QSST](https://www.amazon.com/Samsung-MB-MJ32G-MicroSDHC-UHS-I-Memory/dp/B07CY3QSST) , not to small in size.

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