Hi Polarian,
I am limited by bandwidth however, as it is a home server, with down of 80mbps and 20mbps up on average, and on the archwiki page it is highly unadviced to contribute to the mirrors if you do not have at least 100mbps upload.
We host one arch, one manjaro and one yiffos mirror in NL (on lavate.ch). These use on average ~40Mbit/s, and add up to upwards of 20TiB/mo in terms of upload traffic. I'd say that your connection is probably not a good fit for hosting a mirror, especially as your ISP likely has fair use limitations on how much you can upload per month with a personal plan.
I would still like to contribute, but not sure how.
In my experience using UK hosting, is that the servers struggle to
prevents load on other mirrors constantly updating multiple identical
If you'd like to contribute, I'd look into either doing so by hosting a mirror from a location with more bandwidth or by contributing in another way: https://wiki.archlinux.org/title/getting_involved maintain 4-8mbps I get very good speeds on http://lon.mirror.rackspace.com/archlinux/, I downloaded the 1.5G cuda package at 73MB/s (~584Mbit/s). packages across all containers and virtual machines.
I still use it for personal use, and also for use of other people in my area, and of course for my hosting, nothing is better than syncing at 6gbps (limit of sata interface)
Regarding maintaining a private mirror, please see https://wiki.archlinux.org/title/DeveloperWiki:NewMirrors#Notes_about_privat..., it's discouraged unless you need it, and you'd probably be better off with a network shared pacman cache in your case (more info for that in the wiki page I linked). Best, ave