How far apart are the two devices? Is it just ethernet between the two hosts or is there a wide area network (WAN) between the two systems? How fresh does the data need to be on the destination system? What data transfer mechanism are you using between the two systems (FTP)? There are a lot of missing details in your description of the problem. Tape is, of course, one data transfer mechanism and be somewhat fast depending on the data volume and freshness requirements on the destination system.