The DFS Replication service detected that the staging space usage is above the staging quota for the replicated folder at local path

This error is indicating that my staging file is too small.

How do I know what to increase it to?

Only the old servers seem to complain, the 2012 R2 and later just get on with it...

Log Name: DFS Replication
Source: DFSR
Date: 12/15/2020 10:59:04 AM
Event ID: 4202
Task Category: None
Level: Warning
Keywords: Classic
User: N/A
Computer: SiteNAS-HP01.domain.local
Description:
The DFS Replication service has detected that the staging space in use for the replicated folder at local path E:\Clients is above the high watermark. The service will attempt to delete the oldest staging files. Performance may be affected.

Additional Information:
Staging Folder: E:\Clients\DfsrPrivate\Staging\ContentSet{7368A701-EBF9-4A16-9C24-3C1CB6E6CF8C}-{FC93AED3-E162-419F-B42D-FC8892E07E25}
Configured Size: 4096 MB
Space in Use: 13550 MB
High Watermark: 90%

Low Watermark: 60%

Replicated Folder Name: Clients
Replicated Folder ID: 7368A701-EBF9-4A16-9C24-3C1CB6E6CF8C
Replication Group Name: Client Folder
Replication Group ID: F2139F35-BF83-406D-AA0B-992A20A0C955
Member ID: FC93AED3-E162-419F-B42D-FC8892E07E25
Event Xml:



4202
3
0
0x80000000000000

372398
DFS Replication
SiteNAS-HP01.domain.local



7368A701-EBF9-4A16-9C24-3C1CB6E6CF8C
E:\Clients
E:\Clients\DfsrPrivate\Staging\ContentSet{7368A701-EBF9-4A16-9C24-3C1CB6E6CF8C}-{FC93AED3-E162-419F-B42D-FC8892E07E25}
4096
13550
90
60
Clients
Client Folder
F2139F35-BF83-406D-AA0B-992A20A0C955
FC93AED3-E162-419F-B42D-FC8892E07E25
0

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If you look at the following:

Configured Size: 4096 MB
Space in Use: 13550 MB
High Watermark: 90%

The best option would be to give it above that number in staging file size - 16384 MB should be about right.

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