matrix So If i get it correctly, I can have multiple backup server, but I can only associate one for each webhosting plan/domain. So I have to replicate everything on a second host manually.
Correct. But the replicated backups on other backup role servers won't be used by the system, it will only backup/restore to/from the server that has the backup role defined for the website by the control panel. So why you 'have' to replicate isn't clear to me.
matrix Can you tell me what technology does it uses for backup? ..... Also can I setup a specific backup time?
The Enhance software runs rsync via an SSH tunnel to/from the backup server, you can see the exact command and arguments when it runs, via something like HTOP. The control panel allows you to set retention, allowed times and intervals. It deduplicates by creating 'snapshots' using hardlinks.
matrix About HTTP3 I use Litespeed enterprise on Plesk. But if I split 40 customers to 40 VPS isntances the costs of LSE becomes insane
As mentioned above, many people use OLS. It's not a perfect implementation in Enhance, but good enough for a wide range of companies.
matrix The thing that Enhance doesn't support Apache+Nginx is a big problem for me right now
You pick one webserver which does everything, so choose wisely.
matrix Does the Apache+Nginx web role supports HTTP3? Or I'm force to OLS/LS? Latest nginx does, not sure it's already setup for that on enhance.
On Enhance, OLS and LS support HTTP3. Apache does not. Nginx is built with HTTP3 support, but the Enhance config doesn't use it, but you could make it work if you modify the config. I've seen and measured a lot of variation in performance of HTTP3, ranging from HTTP3 being slightly better to being much much worse on OLS/Nginx, depending on VPS/server/datacenter, type of traffic and client internet connection, so thorough performance testing is a must if you want to rely on it.
HTTP3 is amazing the way it's implemented by Cloudflare, Google, Netflix etc, but when it comes to 'retail' implementations like OLS/Nginx/LS/Apache it's very much béta at best. The Ubuntu 24.04 repository Nginx doesn't even have HTTP3 yet, the latest mainline (which you can't use on Enhance) has experimental support, OpenSSL libraries are massively lagging on QUIC implementation, so I reckon for small hosts like most here proper HTTP3 is years away.
