I tried to run a quick backup test to a CIFS share but was disappointed in the results. First, you can't create a scheduled backup job and then decide to run it immediately. You have to use the Run Backup button to create a separate job, which can't be saved for future use. You also can't edit or temporarily disable scheduled jobs once they are created, you can only delete them.
I also found that you can't have a blank Remote Username as shown in Figure 10 below. I also didn't have much luck using the host name for the Remote Server, but found that using its IP address worked.
Figure 10: Backup job creation
But even once I managed to not get a "connection failed" message when I clicked the OK button in the screen above, I was unable to run a successful backup. I only got the two messages below in the System Status System Alerts box.
2009-05-18 17:32:10 Backup public to 10.168.3.147:test; No space left on destination
2009-05-18 17:32:10 Backup public to 10.168.3.147:test starting
The NSS3000 was tested using our standard test process with 1.15-9 firmware and four Western Digital WD2500YS-01S 500 GB drives configured in RAID 0, 5 and 10 with 1000 Mbps and 1000 Mbps with 4k jumbo LAN connections.
Figure 11 presents a summary of the benchmark tests run for the NSS3000 with RAID 0, 5 and 10 write plotted. There is some performance boost from caching at the smaller file sizes. But throughput drops to the mid-to-low teens at 256 MB file size and stays there up to 4 GB.
Figure 11: Performance benchmark summary - write
Figure 12 shows the read results plotted for the same benchmarks (values are in Figure 10's table). Results are about the same—mid to low teens.
Figure 12: Performance benchmark summary - write
The RAID 5 averages shown in the NAS charts look better due to the averaging in of the cached performance. RAID 5 Performance with a 1000 Mbps LAN connection averaged over the 32 MB to 4 GB file sizes and with cached results above 125 MB/s removed from the average comes in at 35 MB/s for writes but a more realistic 16.9 MB/s for reads.