My problem with a server located in our off-site (Street). This same external hard drive and eSATA connectivity must be faster than USB 2.0, which uses the site server. My speed on this server, although about 80-100 MB/min. At this rate, the same backup takes about a month and a half, or approximately 35-40 hours. I tried for an exchange of telegrams, try using USB and eSATA, and consider the NIC properties and the properties of the connection; it seems that all these beautiful values.