fe31nz:

 

 

 

That used to be the case, but these days there are plenty of spinning rust drives that are faster than gigabit Ethernet.  1 Gbit/s = 125 Mbytes/s - actual speed will be less due to the protocol overheads.  Take a look at this for an example of a fast modern enterprise class drive:

 

https://www.pbtech.co.nz/product/HDDSE90160/Seagate-35-16TB-Enterprise-Capacity-Exos-SATA-6Gbs

 

Note the maximum sustained transfer rate of 269 Mbytes/s.  I have a slightly older ST14000NM0018 model and two ST12000NM0007's and yes, they really are that fast.  And in a speed oriented RAID setup with multiple drives, even older drives will work faster than 1 Gbit/s.  I would love to have a 10 Gbit/s network - it is a pain moving huge video files between these drives over just 1 Gbit/s.

 

I take your point re: Mbps & MB/s. I forgot about that ;)

Jase2985:

 

yeah na, a standard sata 6gb drive will sit at 200-300MB/s sustained writes, which is faster than the 125MB/s that Gigabit Ethernet allows