How much storage fits in the UGREEN NASync iDX6011 Pro?
By Devin Chua · Data checked by Owen Nakamura · Updated · Prices checked The UGREEN NASync iDX6011 Pro takes 6 drives, up to 208 TB raw, but usable is the number that matters: 6 × 8 TB in RAID 5 gives 36.38 TiB for about CA$3,432 in drives, and it survives 1 drive failing. The gap from raw capacity is parity.
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Usable space in the iDX6011 Pro, by RAID level and drive size
All 6 bays filled with same-size drives; usable space as the NAS reports it (TiB). Live drive prices are on the best drives for the iDX6011 Pro page.
| Drive size | Raw | RAID 5 | RAID 6 | RAID 10 |
|---|---|---|---|---|
| 6 × 8 TB | 48 TB | 36.38 TiB | 29.10 TiB | 21.83 TiB |
| 6 × 12 TB | 72 TB | 54.57 TiB | 43.66 TiB | 32.74 TiB |
| 6 × 16 TB | 96 TB | 72.76 TiB | 58.21 TiB | 43.66 TiB |
| 6 × 20 TB | 120 TB | 90.95 TiB | 72.76 TiB | 54.57 TiB |
| 6 × 24 TB | 144 TB | 109.14 TiB | 87.31 TiB | 65.48 TiB |
| 6 × 30 TB | 180 TB | 136.42 TiB | 109.14 TiB | 81.85 TiB |
| 6 × 32 TB | 192 TB | 145.52 TiB | 116.42 TiB | 87.31 TiB |
Reserve NVMe space for AI models
Plan the iDX6011 Pro’s storage in two tiers. The 6 bays hold files, photos and backups; AI models belong on the NVMe tier, where they load in seconds. Every model on our list the iDX6011 Pro runs comfortably at 64 GB comes to 148 GB on disk (12 models, the largest Llama 3.3 70B); an everyday set of four (Llama 3.2 3B, Qwen3 4B, Llama 3.1 8B, Gemma 3 12B) is 18 GB. A 500 GB NVMe drive holds either with room for new versions. NVMe picks for the iDX6011 Pro ›
A worked configuration for the iDX6011 Pro
WD Red Pro or Seagate IronWolf Pro in every bay is the recommendation for the iDX6011 Pro. At 6 × 8 TB in RAID 5, the iDX6011 Pro lands 36.38 TiB usable for about CA$3,432 in drives, gives up 8 TB to parity, and survives 1 drive failing. Step the same 6 bays of the iDX6011 Pro up to 16 TB drives and it holds roughly twice that, at the CA$/TB the live table above shows.
RAID 5 or RAID 6 in the iDX6011 Pro?
With 6 bays the iDX6011 Pro gives a real choice. In RAID 5 it keeps 36.38 TiB of the 6 × 8 TB and survives one failure; RAID 6 spends one more drive for two. The trade tips with large drives: after a failure the iDX6011 Pro 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 iDX6011 Pro.
One rule holds on every NAS, the iDX6011 Pro included: use CMR drives, not SMR. SMR drives rewrite overlapping tracks and collapse during a RAID rebuild, dragging a repair from hours into days.
Keep calculating
To see how much capacity is left after parity, the iDX6011 Pro capacity calculator is preset to its 6 bays and RAID types. For the iDX6011 Pro, the wider basics of choosing a drive are in the buying guides, and CMR versus SMR explains why SMR drives do not belong in a RAID array. Wondering what the iDX6011 Pro can actually do: Plex, Immich, Docker, local AI? See what the iDX6011 Pro can run.
Frequently asked questions
What is the maximum storage in the iDX6011 Pro?
6 drives, up to 208 TB raw per the manufacturer. 6 × 32 TB hard drives plus 2 × 8 TB NVMe, per UGREEN
How much of the iDX6011 Pro is actually usable?
In the iDX6011 Pro, 6 × 8 TB in RAID 5 yields about 36.38 TiB, which is 40 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 iDX6011 Pro later?
Yes, but on the iDX6011 Pro 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 iDX6011 Pro?
Yes. UGREEN locks no drive brand on the iDX6011 Pro; its compatibility list is guidance, not a gate.
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)