Replication Server stores messages, such as replicated transactions, on disk in stable queues. Disk space for the queues is allocated from disk partitions you create. Disk partitions are Windows disk files.
You must allocate a disk partition of at least 20MB for each Replication Server you install. You can add more partitions later if necessary. Check each partition to make sure that it is available and that the Windows System Administrator can write to it. To use an operating disk for a partition, create an empty file. Verify that there is enough space on the file system for Replication Server to extend the disk partition file to full partition size.
Allocate the entire partition to the Replication Server. If you allocate only a portion of the partition to Replication Server, you cannot use the remainder for any other purpose. Allow read or write permissions on the partition only if the user must have permission to start Replication Server.
See Replication Server Installation Guide > Before You Begin > Planning Your Installation > System Requirements.