# What are the functions of the files in the fdb data directory?

**URL:** <https://forums.foundationdb.org/t/what-are-the-functions-of-the-files-in-the-fdb-data-directory/3608>\
**Category:** Using FoundationDB\
**Created:** [October 20, 2022, 7:07am UTC](https://forums.foundationdb.org/t/what-are-the-functions-of-the-files-in-the-fdb-data-directory/3608 "2022-10-20T07:07:25Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![libo-sober](https://sea1.discourse-cdn.com/foundationdb/user_avatar/forums.foundationdb.org/libo-sober/32/1447_2.png) [@libo-sober](https://forums.foundationdb.org/u/libo-sober)\
**Post date:** [October 20, 2022, 7:07am UTC](https://forums.foundationdb.org/t/what-are-the-functions-of-the-files-in-the-fdb-data-directory/3608/1 "2022-10-20T07:07:25Z")

</div>

I searched the relevant documents and found no analysis of the functions of these files. Who can help me? Thank you.

```bash
4501]# ll
total 229452
-rw---S--- 1 foundationdb foundationdb 104857600 Oct 20 14:56 log2-V_6-a8680cf4d8afb5f3d34d7cc92ab6977c.sqlite
-rw---S--- 1 foundationdb foundationdb 28672 Oct 20 14:56 log2-V_6-a8680cf4d8afb5f3d34d7cc92ab6977c.sqlite-wal
-rw---S--- 1 foundationdb foundationdb 24043520 Oct 20 14:56 logqueue-V_6-a8680cf4d8afb5f3d34d7cc92ab6977c-0.fdq
-rw---S--- 1 foundationdb foundationdb 1138688 Oct 20 13:50 logqueue-V_6-a8680cf4d8afb5f3d34d7cc92ab6977c-1.fdq
-rw---S--- 1 foundationdb foundationdb 4096 Oct 19 14:36 processId
-rw---S--- 1 foundationdb foundationdb 104857600 Oct 20 14:56 storage-6697fd036e4779716f3c2ee0729c821b.sqlite
-rw---S--- 1 foundationdb foundationdb 28672 Oct 20 14:56 storage-6697fd036e4779716f3c2ee0729c821b.sqlite-wal

4500]# ll
total 118016
-rw---S--- 1 foundationdb foundationdb 28672 Oct 19 15:36 coordination-0.fdq
-rw---S--- 1 foundationdb foundationdb 65536 Oct 19 15:36 coordination-1.fdq
-rw---S--- 1 foundationdb foundationdb 4096 Oct 19 14:36 processId
-rw---S--- 1 foundationdb foundationdb 104857600 Oct 20 14:58 storage-3aff38f2d99acec7dd0167e43ec9ceb1.sqlite
-rw---S--- 1 foundationdb foundationdb 15892480 Oct 20 14:58 storage-3aff38f2d99acec7dd0167e43ec9ceb1.sqlite-wal

```

I know that \*.sqlite is a file that stores data. What are the functions of files \*.fdq and processId?

Thanks!