Is possible do a PC backup on NAS with 1000Mbps speed ?????

You can also use Windows Task Manager Performance view to view network traffic in both directions while you do any number of network related tasks such as file/folder copy, download/upload on internet, etc. Copies to your NAS will be limited by CPU, RAM, and disk configuration on the NAS. Disk configuration of your NAS will be the weakest link followed by RAM then CPU. If you are using one of those ethernet connected single disks that advertise themselves as an NAS your maximum will be limited by the performance of the disk itself. In general an SATA III HDD will read about 120MBps maximum.

lse123 said:

I have a PC 1000Mbps Ethernet card, a switch 1000Mbps, a NAS 1000Mbps, and an Internet Gateway 100Mbps


Is possible do a PC backup on NAS with 1000Mbps speed ?????

Gateway speed will choke both, try connecting the NAS directly to the ethernet card to achieve your goal. Else buy a high speed router/gateway whichi can provide the said transfer speed.