Performance results
| IOMeter 64KB sequential read | ||
|---|---|---|
| QNAP TS-509 Pro (dual Gigabit) | Thecus N5500 (dual Gigabit) | Thecus N5500 (single Gigabit) |
| 105.46 | 44.89 | 103.96 |
Using a 1GB test file and evaluated via the 64KB sequential read test, the N5500's performance is less than half the similarly-specified QNAP TS-509 Pro when run via dual-Gigabit, suggesting sub-optimal firmware. The single-Gigabit speed is much better, clearly. Neither NAS appliance is able to breach the single-Gigabit speed barrier of 125MB/s.
| IOMeter 64KB sequential write | ||
|---|---|---|
| QNAP TS-509 Pro (dual Gigabit) | Thecus N5500 (dual Gigabit) | Thecus N5500 (single Gigabit) |
| 70.23 | 57.56 | 93.89 |
Sequential writing speed continues to be better on the single connection, although 57.6MB/s can be deemed as reasonable throughput.
| IOMeter 64KB random read and write | ||
|---|---|---|
| QNAP TS-509 Pro (dual Gigabit) | Thecus N5500 (dual Gigabit) | Thecus N5500 (single Gigabit) |
| 12.27 | 19.38 | 20.78 |
Hitting the NAS boxes some, randomised reading and writing is comparatively good on the N5500.
| IOMeter 1MB sequential read | ||
|---|---|---|
| QNAP TS-509 Pro (dual Gigabit) | Thecus N5500 (dual Gigabit) | Thecus N5500 (single Gigabit) |
| 41.54 | 44.14 | 39.85 |
As is the 1MB transfer test.
FTP speed
Hooking the N5500 up to a high-end Core i7 test rig via (single) Gigabit Ethernet and FTP, we managed a download speed of 19.2MB/s and upload of 35.1MB/s when transferring a 5.25GB file to and from the host computer. The results are a little lower than we'd hope for, especially from a high-end NAS.
