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Performance

The NVX was tested with our standard test process. I upgraded to the latest 4.2.5 firmware and used the Seagate ES.22 ST31000340NS 1 TB drives installed by NETGEAR. Tests were run with four drives configured in RAID 0 and X-RAID2 with 1000 Mbps and 1000 Mbps with 4k jumbo LAN connections.

Note that the X-RAID2 results are published under the RAID 5 results in the NAS Charts.

Backup

I first checked backup performance to an Iomega UltraMax Pro Desktop Hard Drive configured in RAID 0 attached via USB 2.0. The test copies a 4.35 GB ripped DVD test folder that I use in the NAS Chart Vista SP1 file copy tests from the NAS to the attached drive.

The results summarized in Table 1 show best performance of almost 29 MB/s was obtained doing a network backup to a Vista SP1 share located on my peppy NAS Testbed machine. The attached backup speeds are typical for what I have seen among the better NASes and are limited by the speed of the USB 2.0 connection.

Note that the NVX supports writing to an NTFS-formatted drive, but doesn't include NFTS along with its built-in FAT and EXT3 external drive formatting options. The 14 MB/s NTFS backup speed actually isn't too bad, second only to the QNAP TS-509 Pro's 21 MB/s.

Product NETGEAR ReadyNAS NVX
Backup Throughput (MBytes/s)
USB - FAT32 23.25
USB - EXT3 20.86
USB - NTFS 14.26
NAS to Vista SP1 Share 28.99
Table 1: Backup throughput test summary

I think it is silly of NETGEAR—and any other manufacturer—to design high-performance NASes like the NVX and ReadyNAS Pro and not include eSATA ports. As usual, QNAP, Synology and Thecus are setting the pace and have eSATA ports on all their new NASes. Even HP has recognized the value of eSATA and included them on their new EX485/487 and LX195 MediaSmarts. Buffalo is also a notable offender, with no eSATA ports across their entire TeraStation and LinkStation lines.

Benchmarks

Figure 7 presents a summary of the benchmark tests run for the NVX with RAID 0 and 5 (X-RAID2) write and read plotted. The write tests show the high cache throughput characteristic I saw with the Pro, which falls off until the 512 MB file size. XRAID-2 write performance is about 20 MB/s lower than RAID 0 once you hit the higher file sizes. Read speed for RAID 0 and XRAID-2 is about the same in the 60 - 70 MB/s range.

Performance benchmark summary

Figure 7: Performance benchmark summary

RAID 0 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 68.1 MB/s for writes and 73.4 MB/s for reads. XRAID-2 results were 54 MB/s for writes and 76.3 MB/s for reads. All results except for RAID 0 write ranked the NVX among the top 5 in each chart.

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