Slow network connection

[Will]

Hi all,

I've been copying a lot of files around on my network recently and I'm a little confused.

I've got a 1Gbps lan card, a 1Gbps Switch, and a 1Gbps NAS drive. So one would have thought that 1Gbps throughput should be achievable?

Well, copying 100Gb of data managed to sustain 10MB/s transfer rate which by my calcs is around 80Mbps? So not even that of a 100Mbps LAN! Achieving over 100MB/s would give me closer to gigabit LAN speeds no?

Or am I missing something really obvious? I understand that most network devices only ever "peak" at full bandwidth, but I'd have thought I'd be able to sustain a throughput of more than 10MB/s...