All the Mods 9: To the Sky Server Hosting

Eight gigabytes is the figure to plan for. The 318 mod list claims a large share of it during boot, before anything is built, and the rest goes to Applied Energistics 2 autocrafting and Mekanism setups as the island matures. Adding heap beyond what the pack needs does not repair tick time, so profile with spark first.

Skyblock keeps everyone near the same platforms, so the limit is not distance travelled but how many independent machine rooms tick at the same time. A small co-op group on one island network runs comfortably on the recommended memory. If everyone wants a separate fully automated project, allow more headroom than the mod count alone suggests.

Back up the world folder first, then stop the server before touching files. Install the new build, leave the existing world in place, and start once with nobody connected so recipes and mod data load cleanly. Read the console for registry warnings before letting people back in, and never update over a live session.

Adding a mod on top of the pack usually works if it targets Forge 1.20.1 and does not duplicate something already in the list. Removing one is riskier, because the quest line and the recipe tree assume the full set and its blocks may already be placed in a base. Test on a copy of the world first.

All the Mods 9 is a normal world where you mine and explore for materials, while To the Sky starts in the void and makes you manufacture the same things. The mod list and the ATM Star goal are close, but the pacing differs: early hours go into resource generation instead of caving, and world generation costs the server far less.

Because almost nothing here is terrain. A handful of chunks hold entire bases full of Applied Energistics 2, Create and Mekanism machinery, so the tick cost concentrates exactly where the save file is thinnest. A quiet disk graph is normal on this pack and says nothing about tick time, which is what spark is there to show.