Each transfer to a NAS device counts as a connection to that NAS and divides its processing abilities.If you have a 10/100 network or even a 1000 network with a 10/100 device: the entire network will transfer at the speed of the slowest device.įor further troubleshooting steps, please see the check list below: Additionally, the same can be applied to the network's infrastructure as a whole.Any transfer between two computers requires resources from both the destination (NAS) and source (Computer) and the transfer will only go as fast as the slowest device. They have to process the data transferred to them over the network. They include an Operating System, RAM, a CPU and even a little motherboard. It's important to understand that NAS devices are in actuality little computers.(**This applies more to older LaCie NAS devices, newer generations are capable of higher speeds when connected to Gigabit rated networks**) Typical data transfer speeds range from 3MB/s to 20MB/s for consumer level NAS devices. NAS devices will not transfer data as fast as a direct connected device will, such as an external USB or eSATA drive.Here are a few reasons why a NAS device might seem to be transferring more slowly than expected: Possible reasons and troubleshooting steps for slow transfer rates to, and from a NAS device.