UGREEN NASync DXP6800 Pro: capacity calculator
By Devin Chua · Data checked by Owen Nakamura · Updated In the UGREEN NASync DXP6800 Pro with 6 × 8 TB in RAID 5 you keep 36.38 TiB usable (40 TB in drive-maker terms), surviving 1 drive failing. The calculator below is preset to the 6 bays and the RAID types UGOS Pro actually offers on this model (there is no SHR equivalent here), with the cost to fill in Canadian dollars from live Amazon.ca prices.
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Preset for the DXP6800 Pro: 6 bays, and only the RAID types this model actually supports.
RAID 1 (Mirroring)
That is 8 TB the way drive makers label capacity. Your NAS shows you the smaller number because it counts in powers of two.
Drives: from CA$3,024 for 6 × 8 TB (CA$63.01/TB overall)
What to know about the DXP6800 Pro
The flagship: six bays, a laptop-class i5, two 10-gigabit ports. In this class RAID 6 beats RAID 5, because six large drives make the rebuild the real risk. Enterprise drives like Exos are defensible here if you accept the noise.
The DXP6800 Pro at a glance
| Bays | 6 × 3.5-inch and 2.5-inch SATA |
|---|---|
| Maximum raw capacity | 208 TB 6 × 32 TB hard drives plus 2 × 8 TB NVMe, per the manufacturer |
| Processor | Intel Core i5-1235U (10 cores, 12 threads) |
| Memory | 8 GB stock, DDR5 SO-DIMM 4800 (2 slots) 64 GB per the manufacturer |
| M.2 NVMe | 2 slots 2 × M.2 NVMe; plus a PCIe x4 slot and 2 × Thunderbolt 4 |
| Network | 2 × 10GbE (link-aggregable to 20 Gbit/s) |
| RAID types | Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 |
| Third-party drives | unrestricted Open. UGREEN mandates no drive brand. The compatibility list is a recommendation, not a lock. |
No SHR: mixed drive sizes cost the DXP6800 Pro capacity
UGOS Pro has no flexible RAID like Synology's SHR. Put one 16 TB drive with three 8 TB drives in the DXP6800 Pro and it counts 8 TB per drive — eight terabytes sit idle. So buy matched drives for the DXP6800 Pro, or work the loss out in the calculator above before you commit to this model; the "unused" figure shows exactly how much you would lose.
RAID 5 or RAID 6 across the DXP6800 Pro's 6 bays?
With 6 bays the DXP6800 Pro gives you the choice. RAID 5 (or SHR) leaves 5 of 6 drives as usable capacity and survives one failure; RAID 6 spends one more drive for two. The rule of thumb: from 16 TB drives up, the rebuild after a failure runs so long — easily a full day — that a second failure in that window stops being theoretical. That is when RAID 6 earns its cost on the DXP6800 Pro.
Which drives belong in the DXP6800 Pro?
CMR NAS drives rated for 24/7 use — Seagate IronWolf, WD Red Plus, Toshiba N300 or their Pro variants. Our drive picks for the DXP6800 Pro with live prices show which of those currently offers the best capacity per dollar. If you are working back from a target capacity instead, the drive-count calculator works out how many drives you need.
Frequently asked questions
How much storage is left in the DXP6800 Pro with 6 × 8 TB?
About 36.38 TiB usable — 40 TB in drive-maker terms — computed in RAID 5, the sensible default for this model. It survives 1 drive failing. The gap from the 48 TB raw goes to parity.
Which RAID types does the DXP6800 Pro support?
UGOS Pro offers Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 on the DXP6800 Pro. There is no flexible RAID like Synology's SHR here, so mixed drive sizes cost the DXP6800 Pro real capacity — every drive counts only as much as the smallest in the array.
Can I put third-party drives in the DXP6800 Pro?
Open. UGREEN mandates no drive brand. The compatibility list is a recommendation, not a lock.
How much memory does the DXP6800 Pro take?
It ships with 8 GB (DDR5 SO-DIMM 4800 (2 slots)). 64 GB per the manufacturer There are 2 slots.
Why does my NAS show less than the calculator says?
Because the maker and the OS count differently. A drive maker calls one trillion bytes a TB; the NAS counts in powers of two and calls that a TiB — about 9 percent less. That is why this calculator leads with the TiB figure: it is the number you will read off the screen.
Devin Chua works out which drives, RAM and NVMe cache fit which NAS model at nasdrives.ca, and what the RAID choice means for usable capacity, checked against what is in stock on Amazon.ca.
Data checked by Owen Nakamura, Technical editor (data checking)