NV+ V2 - USB3 but only capable of USB2 backup speeds?!

Patience. Remember that anandtech tested on first firmware release so if there is a problem it may be addressed in future firmware. Also we're yet to see NetGear' publish their numbers. Performance can depend on a variety of factors: filesystem used, hard drive used etc.

mjw wrote:
According to the Anantech review the NV+ V2 can only manage a top backup speed of 26.53 MiB/s. Is this correct, and if so, what's was the point of including USB3 but not developing a NAS capable of backup speeds that would exceed the bandwidth of USB2?

Quotation from "anandtech" - One touch backup was performed for 100 GB of data (with multiple small files and folders). I think its quite good speed for backup of small files.

That is a good point. For benchmarking performance large files tend to be used e.g. a multiple GB file (want to use something several times the amount of RAM and that will take a while to copy to eliminate caching etc.). Then there's different methods you can use (e.g. Frontview backup or for optimal performance using the command line).

With small files (perhaps what you'd see in real world) performance is going to be very much slower than with large files. With mechanical hard disks 4k random/read write rates are very, very slow compared with dealing with large files.

It's interesting that anandtech also found that ntfs is now faster than ext3 (mentioned in the comments section). It seems that ntfs has taken some major strides forward on the readynas in the last year.