NOTE: If you have DFS running on a domain controller, the staging area size that you specify is for both SYSVOL and DFS; even if the staging areas are separated, the combined size equals the value in the registry.
When the space consumed by staging files reaches 660 MB, inbound and outbound replication is suspended until free staging space is available. Typically, when the server replicates large amounts of data, staging areas can reach their limit because the FRS moves data to the local staging area at a rate faster than the data can be transferred across the network to the staging area of the other FRS replica partner.
A display of the event that may be registered in the event log is as follows:
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.
Data type: REG_DWORD
Range: 0x0 - 0xFFFFFFFF KB
Default value: Default= 0xA5000 (660000 KB = 660 MB)
For example, 1.5 GB = 16e360 (1500000 KB = 1.5 GB)