We just installed new eSATA backup hardware on our server in the hope of better speed. However, the speed we get is exactly the same as with the old USB 2.0. What is it about this server that limits the backup speed to 6 MB/s? Thank you experts for helping.
Dell PowerEdge SC430, with SBS 2003 (Server 2003 has latest updates)
Vantec UGT-ST400 card 3 Gb/s (SATA II), on x1 PCIe
Internal OS Drive connected to onboard SATA I controller
Internal DATA Drive (SATA II) connected to internal Vantec card connection
External Iomega drive 34527 (eSATA II) 3Gb/s connected to eSATA connection on Vantec card
Backup 1 (ntbackup) from OS drive to external drive- 6 MB/s, should be 3 times faster at least
Backup 2 (ntbackup) from DATA drive to external drive- same 6 MB/s, should be 6 times faster
Note: during backup there is no other activity on server.
What is it about this server that limits the backup speed to 6 MB/s?