Start/notes.ini Parameters/Replicators

Replicators

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Parameter: Replicators
Summary: Number of parallel Replicator tasks the Domino server runs simultaneously.

Profile

Parameter
Replicators
Category
Performance / Memory
Component
Server
Available since
9.0.1
Supported versions
9.0.1, 10.0, 11.0, 12.0, 14.0, 14.5, 14.5.1
GUI equivalent
notes.ini only (no GUI)
Possible values
Integer ≥ 1 (default 1; typically 2–4 on hubs)

Description

Replicators controls how many Replicator tasks the Domino server spawns at startup. Multiple Replicator tasks can process replications to different cluster mates and Connection documents in parallel, preventing the replication queue from piling up on hub servers and large cluster groups.

Example configuration

Replicators=3

Notes & pitfalls

  • Rule of thumb: at most as many Replicator tasks as available CPU cores – otherwise context switching costs more than parallelism gains.
  • More tasks = more NRPC connections, more open file handles, more memory – noticeable with many cluster mates.
  • Takes effect after a server restart or after tell replicator quit / load replica.
  • Rarely needed on spoke servers; a classic tuning lever on replication hubs and busy cluster mates.
  • Consider together with Server_Pool_Tasks, NRPC sessions, and storage performance.