Upgraded ZfD 7 server hardware from whitebox server to HP Proliant DL360.

All the specs are better including 1000mbs ethernet.

Imaging used to take 15 minutes to both take and put a 2-4GB image.

Now it still takes 15 minutes to take, but 96 minutes to put the image down.
This is with workstations and the server connected to the same Gigabit
switch (Extreme Networks).

I checked the server and it is connected 1Gbs Full Duplex.

How can I start to troubleshoot this?