# File System interface

A D3 service, normally started automatically at boot time
on a Windows server that services file system requests. Each D3 file
server must have an FSI service or process started to be able to access
the D3 tables.

The FSI service also centralizes the record locks associated
to the tables it manages.

The FSI service is a multithreaded
process, which is able to service several clients requests.

---
Source: https://d3codex.com/definitions/file-system-interface/ - part of the D3Codex reference.