Upgrade from RPI4 to RPI5 question

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I am very happy actually with the way my RPI 4 (8 Gig) is up and running but was going to pick up an RPI 5 (8 GIg) with the idea I would have the spare on hand if/when the RPI4 dies.

I am running the RPI 4 headless with an SSD (plugged into it through the USB port).

When the time comes to cut over (hopefully after HA supports RPI5), other than updating the RPI 5 to understand it should boot off the ssd instead of the sd card, Is there anything else I need to do other than just plugging it in?

I just want to know so I am ready to quickly cut over quickly - in case of a hardware failure

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Hey KruseLuds, best practice would probably be recreating HA by writing the image to SSD using Raspberry Pi Imager (erasing everything by doing so) and getting the data back via restore. I am using GitHub - sabeechen/hassio-google-drive-backup: Automatically create and sync Home Assistant backups into Google Drive for daily/weekly/monthly backups in case of failure.
Total time for a restore should be feasible within 1 hour.

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Agreed, thank you.

Yes I use the Google backup, it’s fantastic

I have a daemon running on the RPI 4 to turn the fans on the case on and then back off if the CPU temp crosses certain temp thresholds (but they never do anyway - it never goes above about 110 degrees F). I may not even need that any more - as I heard there was some kind of mechanism built in tor the external case fans - a separate connector for same right on the RPI board… - but if that is in the raspbian OS that I blow away… LOL

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Backup → restore