Benchmarks - Copy
Directory Copy From NAS - 64kB reads
Directory Copy To NAS - Predominantly 64kB writes, wide scattering under 16kB
File Copy From NAS - 4GB file copy, 64kB reads
File Copy To NAS - 64kB writes
The last set of tests is the file copy group. Here we also see both NAS servers performing at nearly identical levels. The Thecus N4200 PRO does cost 100 USD less and includes a battery backup system, though.