The File Replication Service (FRS) uses a staging area, which defaults to 660 megabytes, during the replication process. When the staged files exceed this limit, the inbound and outbound replication is suspended until free staging space is available. The staging area can become full because FRS moves data to the local stanging area at a faster rate than the replication partners can receive it.
When you exceed the limit, the FRS log will contain:
Event Type: Warning Event Source: NtFrs Event Category: None Event ID: 13522 Date: Time: User: N/A Computer: <ComputerName> Description: The File Replication Service paused because the staging area is full. Replication will resume if staging space becomes available or if the staging space limit is increased.To increase the staging area limit, use Regedt32 to navigate to:
Double-click Staging Space Limit in KB and use the Decimal radix in the DWORD Editor to set the new limit in kilobytes.
Example: To set the staging area to 1.5 gigabytes, enter 1500000 using the Decimal radix or 16e360 using the Hexadecimal radix.