MB/sec to Mbps How's my speed?

[Horn_Spanker 524]

If I'm transferring files from a spinning hard drive in a PC with a gigabyte NIC via CAT5e to a gigabyte switch via CAT5e to another gigabyte NIC and finally a spinning hard drive, is 70MB/sec average?  A quick online calculator says 70MB/sec equals 560Mbps.  So, am I transferring files at 560Mbps over a gigabyte LAN?

[Dahobbs 17627]

You have a gigabyte or gigabit connection? I assume gigabit, as standards are gigabit and 10 gigabit.  In that case you're getting half the potential speed of the network in a spinning disk to spinning disk transfer, which is pretty good? Also, file size is pretty important in determining transfer speed. Even high end solid state drives aren't going to hit high speeds if you're dealing with a bunch of small files. 

 

[elfenix 34330]

your LAN is gigabit.  network speeds are always quoted in bits.

[immamac 42877]

Theoretical Max would be 125MB/s for a 1000mbps line which your switch and cables are. 

[Horn_Spanker 524]

I just bought a Gigabyte motherboard, so "gigabyte" was still in my brain.  Was transferring 500MB files at the time of the 70MB/sec.

[George 493]

That’s not terrible. 

[XYZ 2154]

You don’t need an online calculator. 1 byte = 8 bits

[Captain Ron 12886]

Yes, you are transferring ~550 megabit per second across your gigabit network.

The likely culprit is both of your HDDs. In the end, they are the bottleneck in this situation as they are slower read/write speeds than your NIC. You should look at the speeds of those to determine if this seems reasonable.

Edited February 27, 2019 by Captain Ron

[52-80 19205]

getting a sustained 70MB/s from a spinning drive in the first place is already impressive