Performance - 100 Mbps LAN
IOzone was used to check out the file system performance on both the NV+ and 1100 (the full testing setup and methodology are described on this page). Tests were run only in the default XRAID modewhich with four drives is essentially RAID 5with 100 and 1000 Mbps LAN connections. The gigabit-connected tests were run with both jumbo frame capability disabled and with 4k jumbo frames.
To ensure connection at the intended speeds, the iozone test machine and the units under test were manually moved between a NETGEAR GS108 10/100/1000 Mbps switch for gigabit-speed testing and a 10/100 switch for 100 Mbps testing.
- Firmware version tested:
- Drives used (supplied by Infrant):
NV+: four Seagate Barracuda 7200.10 ST3400620NAS 3.0 Gb/s 400GB 7200RPM SATA, 16 MB cache
1100: four Seagate Barracuda ES ST3250820NS 3.0 Gb/s 250GB 7200RPM SATA, 8MB cache
- Keep in mind that the maximum raw data rate for 100Mbps Ethernet is 12,500 Kbytes/sec and 125,000 Kbytes/sec for gigabit
Figures 3 and 4 show write and read results respectively with a 100 Mbps LAN connection. Included in the plots for comparison are the original Infrant NV, Thecus N5200 and Synology CS406all four-drive RAID 5 NASes.
The NV+ does a bit better than both the 1100 and original NV for 100 Mbps writing, but the Thecus N5200 does better than both.
Figure 4: 100 Mbps LAN RAID 5 write performance
100 Mbps read is more of a horse race for 256 MB and larger file sizes. Note also that absence of the downward-sloping curve characteristic on the N5200 when reading.