How much storage fits in the UGREEN NASync DH4300 Plus?
By Devin Chua · Data checked by Owen Nakamura · Updated The UGREEN NASync DH4300 Plus takes 4 drives, up to 128 TB raw, but usable is the number that matters: 4 × 8 TB in RAID 5 gives 21.83 TiB, and it survives 1 drive failing. The gap from raw capacity is parity.
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CMR NAS drives for the DH4300 Plus, by price per TB
Only families with confirmed CMR recording and a 24/7 rating, in stock on Amazon.ca and sized for the DH4300 Plus. SMR drives are deliberately kept out.
What sets the DH4300 Plus apart
The affordable ARM version with four bays. The memory is soldered, so you decide once and for good at purchase: 8 GB stays 8 GB. That is exactly why the DH line is a file store, not a container platform.
Who the DH4300 Plus is for
The DH4300 Plus is built on the ARM 8-core (Cortex-A76 and A55, 2.4 GHz) — a file-server processor, not a workstation one. It serves files, backs up your other machines and runs a few lightweight apps, but it does not hardware-transcode Plex and it will not host real virtual machines. With 8 GB of soldered memory, what the DH4300 Plus ships with is what it keeps. Buy it to store and protect data quietly and cheaply, and let CA$/TB and noise choose the drives, because the CPU never will.
How the DH4300 Plus's network shapes the drive choice
The DH4300 Plus runs 1 × 2.5GbE. Two-and-a-half gigabit is about 280 MB/s — almost exactly what a modern high-capacity NAS drive reads off its outer tracks — so the DH4300 Plus sits in the sweet spot where an ordinary CMR drive saturates the link and a Pro model buys nothing on speed. Drives under about 8 TB fall short here for lack of areal density; from 8 TB up, a standard IronWolf or WD Red Plus is the right call on the DH4300 Plus.
A worked configuration for the DH4300 Plus
Seagate IronWolf Pro or WD Red Plus in every bay is the recommendation for the DH4300 Plus. At 4 × 8 TB in RAID 5, the DH4300 Plus lands 21.83 TiB usable, gives up 8 TB to parity, and survives 1 drive failing. Step the same 4 bays of the DH4300 Plus up to 16 TB drives and it holds roughly twice that, at the CA$/TB the live table above shows.
RAID 5 or RAID 6 in the DH4300 Plus?
With 4 bays the DH4300 Plus gives a real choice. In RAID 5 it keeps 21.83 TiB of the 4 × 8 TB and survives one failure; RAID 6 spends one more drive for two. The trade tips with large drives: after a failure the DH4300 Plus must read every surviving drive in full to rebuild, which on 20 TB drives runs the better part of a day under peak load. So from 16 TB per drive up, RAID 6 is the calmer choice in the DH4300 Plus.
One rule holds on every NAS, the DH4300 Plus included: use CMR drives, not SMR. SMR drives rewrite overlapping tracks and collapse during a RAID rebuild, dragging a repair from hours into days.
The UGREEN drive policy on the DH4300 Plus
unrestrictedOpen. UGREEN mandates no drive brand. The compatibility list is a recommendation, not a lock.
The DH4300 Plus at a glance
| Bays | 4 × 3.5-inch SATA |
|---|---|
| Maximum raw capacity | 128 TB 4 × 32 TB hard drives, per the manufacturer |
| Processor | ARM 8-core (Cortex-A76 and A55, 2.4 GHz) |
| Memory | 8 GB, LPDDR4X, soldered Soldered, not upgradeable |
| M.2 NVMe | none No M.2 slots |
| Network | 1 × 2.5GbE |
| Operating system | UGOS Pro |
| RAID types | Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 |
Keep calculating
To see how much capacity is left after parity, the DH4300 Plus capacity calculator is preset to its 4 bays and RAID types. For the DH4300 Plus, the wider basics of choosing a drive are in the buying guides, where we also explain why CMR rather than SMR is mandatory in any RAID array.
Frequently asked questions
What is the maximum storage in the DH4300 Plus?
4 drives, up to 128 TB raw per the manufacturer. 4 × 32 TB hard drives, per the manufacturer
How much of the DH4300 Plus is actually usable?
In the DH4300 Plus, 4 × 8 TB in RAID 5 yields about 21.83 TiB — that is 24 TB in drive-maker terms, with 8 TB to parity. It shows less than the label because it counts in powers of two.
Can I fit larger drives in the DH4300 Plus later?
Yes, but on the DH4300 Plus classic RAID sizes to the smallest drive, so the extra space arrives only once every drive is replaced. There is no flexible RAID like SHR on this model.
Can I put third-party drives in the DH4300 Plus?
Yes. UGREEN locks no drive brand on the DH4300 Plus — its compatibility list is guidance, not a gate — so any CMR NAS drive works.
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)