Done abit of testing today after work, Transfering large files (4-12gb a piece) seems to be going at around 11.5MB/s. Now this is from a Windows 8 box with storage spaces and the ESXi box with Synology installed. I have both machines stating that they are connected at 1Gb however this is only to the next device.
Excuse the crude diagram below
CurrentServer<--1Gb-->HP_Switch<---->Generic_GB_Switch<--1Gb-->NL54
Router is attached to the HP Switch
I suspect a cable as it should be going quicker, more like 80+ so is there anything else I can tweak and mess with before i go hunting down a cable fault

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