Benchmarks - 6 HDD / RAID 6
RAID 6: Extend RAID 5 by adding an additional parity block; thus it uses block-level striping with two parity blocks distributed across all member disks.
HD Video Playback
HD Video Play - 720p HD stream from Windows Media Player 256kB reads
2HD Video Play - 2x playback
4HD Video Play - 4x playback
HD Video Record
HD Video Record - 720p HD stream, 256kB writes
HD Video Play & Record - 1 playback, 1 record simultaneously
2x HD Video Play & 2x Record - 2 playback, 2 record simultaneously
Photo Album - All reads - wide distribution of sizes
Office Productivity - Reads and writes, 1kB & 4kB reads; Mostly 1kB writes
Content Creation - 95% writes; 1k, 4k & little reads; Writes up to 64kB
File / Directory Transfer
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
Single Client Performance Wrap-up
Since the TS-669L and TS-669 Pro have the same processor and DRAM amount, we have to assume the massive jump in performance between these two models is due to the new QTS 4.0.2 firmware.
The new firmware when paired with the TS-669 Pro doubles performance in some tests when compared to the TS-669L with the older 3-Series firmware.
Looking beyond just QNAP's products, the TS-669 Pro is now as fast and faster in many tests as other manufacture's NAS products.