From windows perfomance perspective I beleive it is an advantage. Specially if replica has been stored in a separate hard disk you can benefit from read I/O
Going through KB http://support.microsoft.com/kb/314482, it says:
"To enhance performance, it is good practice to put the paging file on a different partition and on a different physical hard disk drive. That way, Windows can handle multiple I/O requests more quickly. When the paging file is on the boot partition, Windows must perform disk reading and writing requests on both the system folder and the paging file. When the paging file is moved to a different partition, there is less competition between reading and writing requests"
