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Compared to the entry-level "NAS" product line, Seagate has significantly beefed up the hardware for the NAS Pro family of NASes. Each of the models is powered by an Intel Atom C2338 dual core CPU running at 1.74 GHz and is equipped with 2 GB of DDR3 SoDIMM memory. Each has one USB 2.0 port and two USB 3.0 ports.

The image below shows the top side of the main PCB for the Seagate NAS Pro. As you can see, the CPU is covered by a heat sink.

Seagate NAS Pro main PCB top

Seagate NAS Pro main PCB top

The bottom of the main PCB shows the SoDIMM memory slot. Seagate said that memory is not user upgradable.

Seagate NAS Pro main PCB bottom

Seagate NAS Pro main PCB bottom

The key components for the NAS Pros as well as for the 2 and 4-bay Seagate NASes are summarized in Table 2 below.

Seagate NAS Pro Seagate NAS-2 Seagate NAS-4
CPU Intel Atom C2338 (2C/2T Silvermont x86 Cores @ 1.74 GHz) Marvell ARMADA 370 @ 1.2 GHz Marvell ARMADA 370 @ 1.2 GHz
Flash 256 MB 128 MB 128 MB
Ethernet Intel I211-AT Gigabit Ethernet Controller (x2) Marvell 88E1518 (x1) Marvell 88E1518 (x2)
SATA In CPU (for up to 6 drives) None Marvell 88E9170 PCIe-to-SATA dual host controller
USB 3.0 USB 3.0: Asmedia ASM1042A PCIe dual USB 3.0 host controller Asmedia ASM1042A PCIe dual USB 3.0 Asmedia ASM1042A
Table 2: Key component summary

The test unit provided was a 24 TB NAS Pro (6X4TB). The drives were 4 TB Seagate NAS (ST4000VN000). Power consumption with drives active was as follows:

  • 6 drives - 53W
  • 4 drives - 38W
  • 2 drives - 23 W

We were not able to measure power with drives spun down because the idle drive power save feature didn't work.

RAID 5 build time was 11hr and 25 minutes for a 4 X 4TB volume. That's significantly faster than the 25 hours and 10 minutes that we experienced for a 4 X 4TB RAID volume build on the Marvell-based models.


All of the NAS Pro NASes run on the same Seagate NAS OS 4, so you'll find the same feature set and UI described in the Seagate NAS Family review.

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