// modpack server guide
Aged server hosting & setup guide
An Aged server needs Java 17 and about 7–9.5 GB of RAM for up to 15 players.
realistic / medieval / progression based modpack for Fabric 1.20.1
Summary from Aged on Modrinth.
Aged is a Fabric modpack for Minecraft 1.20.1 (older versions go back to 1.19.2) with 213 mods, 185 of which run on the server. We'd pick our Heavy plan (12 GB) for it.
Quick facts
| Loader | Fabric |
|---|---|
| Minecraft versions | 1.20.1, 1.19.2 |
| Java needed | Java 17 for Minecraft 1.20.1 Java version chart. |
| Mods | 185 run on the server213 in the pack. The other 28 are client-only, and the server skips them. |
| RAM | About 5–6 GB for 1–3 playersBy player count. |
| Downloads | 1,446,103 on Modrinth |
| Last updated | December 1, 2024 (version 3.1.2) |
| First published | April 19, 2023 on Modrinth |
| Server support | Required: the pack has mods that must run on the server. |
| Server pack | Not published separatelyHow to build the server. |
| Modrinth tags | adventure, challenging, combat, optimization |
Aged server files
No. Aged has no separate server pack on Modrinth, so the server is built from the .mrpack: the Fabric server for Minecraft 1.20.1, plus the pack's overrides folder and the server-side mods its modrinth.index.json lists. A modpack installer does this for you; our guide shows how to make a server for a modpack with no server pack.
How much RAM does an Aged server need?
| Players online | RAM | DSN plan |
|---|---|---|
| 1–3 players | About 5–6 GB | Premium (8 GB) |
| 4–8 players | About 6–7.5 GB | Premium (8 GB) |
| 9–15 players | About 7–9.5 GB | Heavy (12 GB)Premium (8 GB) can do if players stay close. |
Estimated from 185 mods on the server with our RAM calculator, not measured: low end if players stay together, high end if they spread out.
By this estimate Premium (8 GB) can run a small group. Our pick below, Heavy, leaves room for more players and for the pack growing with updates.
Set Java's heap (-Xmx) 10–15% under the RAM you have, about -Xmx10500M on 12 GB. Fabric 1.20.1 takes it in the java command (-Xmx), usually in the start script. RAM guide.
Aged server requirements
| Java | Java 17 |
|---|---|
| Loader | Fabric for Minecraft 1.20.1 |
| CPU | Fast single-core speed (one main thread). With 185 mods, the first start takes minutes. |
| RAM | About 5–9.5 GB for 1–15 players (table above) |
| Disk | The server files, a growing world and backups |
| Network | TCP port 25565 open to players |
Recommended plan
Our pick for Aged
Heavy
12 GB RAM · planned launch price $42/month
At about 185 Fabric mods this is a heavy pack, and 12 GB keeps it clear of out-of-memory crashes.
Ordering is closed until we relaunch. We aren't taking orders or payments while we move to new hardware. Join the launch list and we'll email you when Heavy servers open.
Heavy is our biggest plan. Not sure? Email hello@dsnservers.com.
Planned launch price in USD, billed monthly once ordering opens, with a 7-day refund window.
How to make an Aged server on your own PC
What's specific to Aged, step by step. The full walkthrough for any pack: how to make a modded Minecraft server.
- Install Java 17.
Check with
java -version. Java version chart. - Get the server files.
Build them from the .mrpack, as in server files above.
- Start it and accept the EULA.
Run the start script in the server files, or
java -jaron the Fabric 1.20.1 server launcher, then seteula=trueineula.txtif you accept Mojang's EULA (EULA step). With 185 mods, the first start takes minutes. - Set the RAM with
-Xmx, sized from the table above. - Let friends connect: forward TCP 25565, or use a tunnel or host behind CGNAT (can't connect?).
Or run Aged on DSN
Once we relaunch (join the launch list), on DSN you'd install Aged from the panel's Modrinth modpack installer (version 3.1.2), pick Java 17 on the Startup tab and accept the EULA in the console. No port forwarding.
How to play Aged with friends
Each player installs Aged version 3.1.2 with the Modrinth App or Prism Launcher, the same version as the server, and adds the server's address under Multiplayer.
Different versions of Aged on the server and a client show up as Mismatched mod channel list or mod rejections. Why friends can't join, timeouts included.
Lag and performance on Aged
Can't keep up! Is the server overloaded? means ticks take longer than 50 ms; more RAM won't fix that once Aged has enough (tick lag guide). For Aged:
- Measure first: spark's
/spark tpsand profiler work on 1.20.1 and name the mod or machine using the tick time. - Distances:
view-distance=8and a lowersimulation-distanceinserver.properties. - Pre-generate: Chunky for 1.20.1,
/chunky radius 3000then/chunky start, before people explore. - Chunk loaders keep machines running with nobody nearby; in a pack this size, dozens add up.
Common Aged crashes
What a Fabric 1.20.1 server running Aged hits most. For any other error, paste the log into the free crash log analyzer.
- Out of memory. Aged (185 mods on the server) needs about 5–6 GB for 1–3 players;
java.lang.OutOfMemoryErrormeans it ran out. Out-of-memory fix. - Wrong Java version. Aged on Minecraft 1.20.1 needs Java 17. Started on Java 8, it stops with
UnsupportedClassVersionError: ... class file version 61.0, this version of the Java Runtime only recognizes class file versions up to 52.0. Java version fix. - Client-only mod on the server. Aged includes 28 client-only mods, which a server install skips; copying a player's mods folder brings them back and stops the server. Check a mods list with the client-or-server-side checker. Client-only mod fix.
- After adding or updating a mod. Mods you add to Aged by hand usually crash it with a missing dependency or a mixin conflict.
- Ticking entity or block entity. The crash report names it and gives its coordinates. Ticking entity fix.
Updates and support
Before moving Aged past version 3.1.2, back up the world: see updating a modpack server without losing your world.
Bugs in Aged itself go to its authors: issue tracker and Discord. Server problems on DSN: hello@dsnservers.com or Discord.
Packs like Aged
More: all modpack guides and how to make a modded server.
Run Aged on DSN when we relaunch.
Our pick, Heavy: 12 GB, planned at $42/month.
DSN Servers isn't affiliated with Aged or Modrinth. The pack's name, icon, summary and stats come from Modrinth's public API (checked October 4, 2026).