Chunk Backup
by cokie1479
Chunk Backup gives Forge server operators a way to capture chunk regions and bring them back later, with less server strain than a constant backup would cause.
What it does
Operators capture the blocks of chunk regions and restore them on demand. Captures are kept in the server's config directory, one set per world, and stored with run-length encoding of voxels so the files stay small. Restoring a capture overwrites the blocks in the affected region, so the operator should capture the state they want to return to beforehand.
Large restores are spread across several server ticks rather than applied at once, and the server remains playable while they complete. The mod suits server owners who need to roll back damaged areas, such as griefed builds or broken generation. Commands require operator permission level 2.
A server running it needs every connecting player to have it too. It is published for Forge only, for Minecraft 1.20.1, with a single release, 1.0.0, dated 2026-07-08 on the alpha channel. The code is not open source and is released under All rights reserved, though the source code and issue tracker are publicly linked.
Key features
Region captures
Operators save the blocks of chunk regions so they can be restored at a later time.
Per-world storage
Captures are written to the server's config directory and kept separately for each world.
Staged restores
Large restores run across several ticks, so the server stays playable while a region is rebuilt.
Compact files
Captures are stored using run-length encoding of voxels, which keeps files on disk compact.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server operators who manage Forge 1.20.1 worlds and need to roll back chunk regions. Players on the server need the mod installed, but they do not run the commands themselves.
How it compares
MegaChunks is a Forge mod for 1.20.1 – 1.20.6 that is client and server, released under the MIT License. NextRun is a Forge mod for 1.20.1 – 1.20.4, client and server, under All rights reserved. Ignis is server-side only, released under the MIT License and published for 1.20.1 – 1.20.6, so players can join without it. Chunk Backup is limited to 1.20.1, requires both sides, and is released under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Chunk Backup | Forge | 1.20.1 | Client and server | 2026-07-08 |
| MegaChunks | Forge | 1.20.1 – 1.20.6 | Client and server | 2026-08-02 |
| NextRun | Forge | 1.20.1 – 1.20.4 | Client and server | 2026-05-30 |
| Ignis | Forge | 1.20.1 – 1.20.6 | Server-side only | 2026-06-25 |
Questions
Does Chunk Backup need to be installed on both sides?
Who can run the region commands?
Which Minecraft version does Chunk Backup support?
In the catalog
Chunk Backup is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 34,764 mods support Minecraft 1.20.1.
More from cokie1479
Similar mods
What the author says
A Minecraft Forge 1.20.1 mod for saving and restoring chunk regions without lagging the server. Chunk Back lets server operators save snapshots of chunk regions and restore them later without causing lag spikes or consuming RAM during normal gameplay. It uses RLE voxel compression to store snapshots on disk.
Official listing
- Modrinth page
- modrinth.com/mod/chunk-backup
- Owner
- cokie1479
- Published
- 2026-07-08
- Updated on Modrinth
- 2026-07-08
- Facts verified
- 2026-10-15