极空间 Zspace NAS — brand guide & official drive requirements
Zspace (极空间) is China's consumer-NAS sales champion. Like UniFi on this site, it publishes per-model compatibility pages with requirements and recommendations instead of a per-drive whitelist — each model page below mirrors the official page: capacity ceiling, SMR advice, M.2 and memory rules, and the drive classes Zspace itself recommends.
极空间 Zspace — China's consumer-NAS sales champion — the easiest NAS to use.
About Zspace
Company: Beijing Tiandingxing Technology (北京天顶星科技), zspace.cn
Founded: Chinese consumer NAS brand; #1 in Tmall & JD network-storage sales for 2024
Product type: Turnkey consumer NAS hardware + closed ZOS software
Compatibility model: Per-model official compatibility pages (requirements + recommendations), not a per-drive whitelist
Current lineup: Q2C, Z2 Pro, Z2 Ultra, Z4, Z4S, Z423, Z4 Pro / Pro+, Q4, Z4 Air, Z425
Zspace (极空间) is the brand that brought NAS to the Chinese mass market: Beijing-based Tiandingxing builds turnkey machines whose pitch is not specs but simplicity — reviewers describe the software as so polished that complete beginners are productive on day one. The commercial proof: Zspace took the #1 spot in Tmall and JD network-storage category sales for 2024, and veteran NAS writers rank its app polish alongside UGREEN as the new consumer wave that reshuffled the market.
The flagship experience is 极影视 (Zspace Cinema), widely considered the best home media app on any NAS: direct playback of 100GB 4K Blu-ray remuxes, Dolby Vision/HDR, Apple TV and TV apps, online subtitle and track switching. Around it sit 极相册 (AI photo management), Docker and VM support on higher models, and built-in relay remote access that works without a public IP — the practical answer to China's home-network reality, and a recurring reason reviewers recommend Zspace and UGREEN over tinkering with Synology/QNAP for casual households.
On drives, Zspace publishes an official compatibility page per model — the same requirements-plus-recommendations approach as UniFi, not a per-drive whitelist. Every page states the same core rules: standard SATA 3.5"/2.5" drives, a per-model capacity ceiling (30-32 TB), avoid SMR for RAID, prefer major-brand NAS-class drives (it names Seagate IronWolf and WD Red explicitly), plus per-model M.2 and memory rules. Our model pages mirror those official pages and cross-reference the drives the other five vendors list.
Zspace product lines
| Line | Segment | Notes |
|---|---|---|
| Q series (Q2C, Q4) | Home | Consumer-first designs; Q4 adds 2× U.2 enterprise-capable bays. |
| Z2 / Z4 towers | Mainstream | The volume sellers: Z2 Pro/Ultra, Z4, Z4S, Z4 Pro/Pro+. |
| Z423 / Z425 | Performance | Enthusiast tier; Z425 runs Core Ultra 125H with DDR5 to 128 GB. |
| Z4 Air | Value 4-bay | 2026 value pick: 4 HDD + 1 M.2 at aggressive street prices. |
| ZOS + 极影视/极相册 | Software | The real moat: consumer apps considered best-in-class in the Chinese market. |
All 11 Zspace models — official drive requirements
Q series — home line
Z series — performance towers
How Zspace drive compatibility works
The five hardware vendors on this site publish per-drive whitelists; Zspace (like UniFi) publishes per-model requirement pages. The rules are consistent across the lineup: standard SATA 3.5"/2.5" drives, a per-model capacity ceiling (30-32 TB), a hard warning against SMR drives for RAID 1/5, explicit recommendations for major-brand NAS-class drives — the official pages name Seagate IronWolf and WD Red — plus per-model M.2 NVMe and memory rules. Nothing is firmware-locked; drives outside the advice still work, at the user's own risk.
Strengths & weaknesses
✓ What Zspace does well
- Best-in-market consumer software polish — beginners are productive immediately
- 极影视 Cinema app plays 4K Blu-ray remuxes, Dolby Vision/HDR, with TV/Apple TV apps
- Free built-in relay remote access — no public IP needed
- Official per-model compatibility pages name recommended drive classes (IronWolf, WD Red)
- 2024 #1 consumer NAS sales in China's two largest marketplaces
✗ Where it trails
- No per-drive whitelist — compatibility is requirement-based, so buyers must pick drive classes themselves
- Closed, China-centric ecosystem; English documentation and community are thin
- Business-grade features (snapshots, ACLs, enterprise backup) trail Synology/QNAP
- Mixed long-term reliability reports on some models; depends on cloud services for some functions
Who should buy Zspace (and who shouldn't)
Good fit if you:
- First-time NAS buyers who want an appliance, not a project
- Chinese-speaking households with big media libraries and no public IP
- Buyers who value app polish (photo AI, cinema) over enterprise depth
Look elsewhere if:
- You need an official per-drive compatibility guarantee or enterprise support
- Your workflow depends on English documentation and Western community knowledge
Pricing: Value to mid-premium (CNY): Q2C 2-bay under ¥1,000; Z4 Air 4-bay ~¥1,500-2,100 street; Z4 Pro/Z4 Pro+ ~¥2,000-3,500; flagship Z425 (Ultra 125H) higher.
Software: ZOS is closed-source and consumer-first: file sync, photo AI, the standout Cinema app, TV/mobile clients, Docker and VMs on higher tiers. Remote access is free via built-in relay. The trade-off versus Synology/QNAP is business-grade depth — snapshots, ACLs and enterprise tooling are lighter — and the ecosystem is China-centric.
Zspace FAQ
Does Zspace lock drives like Synology's 2025 attempt?
No. Zspace machines accept any standard SATA/NVMe drive meeting the per-model requirements — there is no firmware lockout. The official compatibility pages advise drive classes (NAS-grade CMR drives, naming Seagate IronWolf and WD Red) rather than certifying part numbers.
What is the maximum hard-drive capacity per Zspace model?
It varies by model: current flagships (Z4 Pro/Pro+, Z2 Ultra, Z425, Q2C, Q4, Z4 Air) support up to 32 TB per bay; older Z4/Z4S/Z2 Pro/Z423 cap at 30 TB. Each model page here lists the official ceiling and the M.2 rules beside it.
Zspace vs UGREEN vs fnOS — how do they differ?
All three are the Chinese new wave. UGREEN sells aggressive hardware at low prices with a young OS; Zspace sells the most polished closed consumer experience (Cinema app, relay access); fnOS is free software you install on your own hardware. Zspace and UGREEN compete head-to-head on 4-bay price; fnOS competes on freedom.
Compare with the other brands
Sizing a 2- or 4-bay buy? See 2-bay and 4-bay cross-vendor comparisons, or the fnOS brand page for the free-software alternative.