Simon, honestly, instead of paying for multiple KVM servers and creating extra points of failure, you’d be better off with a dedicated server at Hetzner.

Comparison:

2x Hostinger KVM 8 – €19.99/month (renews at €49.99/month)

• 8 vCPU
• 32 GB RAM
• 400 GB NVMe SSD
• 32 TB bandwidth

Hetzner Auction Dedicated (Budget option) – €41.29/month

• Intel Core i7-8700
• 2 × 1TB NVMe SSD
• 128 GB DDR4 RAM (4 × 32 GB)
• 1 Gbit Intel NIC unlimited bandwidth

Hetzner Auction Dedicated (Performance / Long-term option) – ~ €103.17/month

• Intel Core i9-9900K
• 2 × 1TB NVMe SSD
• 2 × 3.84TB SATA Datacenter SSDs (huge extra storage)
• 128 GB DDR4 RAM (4 × 32 GB)
• 1 Gbit Intel NIC unlimited bandwidth

👉 For nearly the same price as two KVM 8s, the i7 option gives you far more RAM and storage, with no need to daisy-chain servers.

👉 And if you want something more powerful and future-proof, the i9 option with nearly 9 TB of total SSD storage is still very reasonable at ~€103/month.

I also recommend enabling Hetzner’s backup service then you’ll be fully covered.

• https://www.hetzner.com/sb/#drives_size_from=1000&drives_size_to=22000&driveType=nvme
• https://www.hetzner.com/sb/#drives_size_from=2000&drives_size_to=22000&driveType=nvme&drives_count_from=4&ram_from=128&cpuType=Intel

Hetzner also provides an S3-compatible storage API you can use as a CDN. You can even create internal private networks between servers to scale later.

Honestly, I don’t see any reason to stay stuck with VPS when you’re past the beginner stage. VPS is fine for tuild cheap private cloud , or testing apps, but not for production. Spending time trying to daisy chain VPS instances for storage is, in my opinion, a mistake.

You can read all the documentation you want, but without real power your site will stay in the same place. If you want to grow profesional website, go to dedicated servers, an then plan ahead and build a private cloud, and you’ll be in a much stronger position. If you don't like Hetzner, there are other providers.

Without investment you can't have expectations. From my point of view, this topic is closed. Good luck