Splitting turns one plan into several independent servers sharing its resources. The Advanced-plan floor on it is not a paywall drawn at random — it is the point below which splitting stops producing anything useful and starts producing several servers too small to run well.
What splitting actually divides
A server's memory and CPU allocation is a fixed budget enforced by the container. Splitting partitions that same fixed budget into smaller independent containers rather than creating new resources — two servers split from one 8 GB plan share those same 8 GB between them, not 8 GB each. Below a certain total, dividing further produces instances too small for a real Minecraft server to run comfortably, which is exactly the outcome the plan-tier floor is there to prevent.
What splitting gives you and what it does not
| Included | Client-managed | |
|---|---|---|
| Resource partition | CPU and RAM split into separate containers | — |
| Networking between the new servers | — | Setting up a proxy (Velocity or BungeeCord) yourself |
| Shared player data across them | — | Configuring a shared database if you want ranks or balances to carry over |
Those need very little memory to be useful, so splitting a slice off a plan that already has headroom for its main server is close to free capacity rather than a compromise.