Contabo are quite cheap, but BuyVM's storage slabs at $5/month for 1tb seem cheaper and probably have better performance: https://buyvm.net/block-storage-slabs/

thanks, that's very cheap

c.e. minimum extra $2/mo. for their cheapest VPS (required)

Thanks, looks pretty Good. I still would have hoped there are VPSes with low specs but storage in the low terabytes. Guess I found a niche that is not really in demand.

I can also recommend contabo for exceptional pricing and service. They are very quick and friendly to respond. Maybe you can work out a custom plan with them if you contact them.

I personally know two people that lost all data with Contabo, so be careful.

When was that roughly (recently or years ago?) and what was the cause?

In any case one should never forget that RAID is not the same thing as backup (which applies to a lot of not quite RAID solutions as well).