There is a glass ceiling in the world of NAS devices, and like all glass ceilings it's not that obvious until you bang your head against it a few times. The standard-issue network interface in the consumer market for the last several years has been a one-gigabit Ethernet connection, through an RJ-45 plug and socket at each end. Convert bits to bytes and you end up with a less impressive sounding 125 MB/s interface. Right away the ceiling comes into play, because even a single Seagate Barracuda 3TB Hard Drive ST3000DM001 can push 160MB/s through its SATA 6GB/s interface when it's running hard. That's about 25% more data throughput than a standard 1000BASE-T network is capable of handling. If that's just a single mechanical hard drive; think about what eight SSDs in RAID 5 can do! The answer from QNAP is, read and write speeds well over 1500MB/s with the QNAP TS-879U-RP Turbo NAS.
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