
Terramaster T12-500 Pro
Score: 76/100Terramaster U4-500
Score: 46/100Rankings

A 12-bay high-performance NAS with an i7 CPU, dual 10 GbE, and up to 288 TB storage, suited for SMBs and power users needing virtualization and media services.
A 1U 4-bay rackmount NAS with an Intel i3 CPU, dual 10 GbE, and up to 96 TB raw capacity, aimed at SMBs needing fast backup and media streaming.
| Attribute | ![]() | Terramaster U4-500 |
|---|---|---|
288 TBbest | 96 TB | |
12best | 4 | |
10 Gbpsbest | 10 Gbpsbest | |
10best | 6 | |
16 GBbest | 8 GB | |
| ↓ lower better | 115 Wbest | — |
| ↓ lower better | 24.5 dBbest | 34.5 dB |
2 yearsbest | 2 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | Terramaster U4-500 |
|---|---|---|
Performance(4) | ||
CPU Model | Intel i7-1255U | Intel i3-1215U |
CPU Cores | 10 | 6 |
System Memory (GB) | 16 GB | 8 GB |
Noise Level (dB) | 24.5 dB | 34.5 dB |
Build & Design(1) | ||
Weight (kg) | 7.9 kg | 6.2 kg |
Storage & Capacity(4) | ||
Maximum Raw Capacity (TB) | 288 TB | 96 TB |
Drive Bays | 12 | 4 |
RAID Support | Single, RAID 0, 1, 5, 6, 10, JBOD, TRAID, TRAID+ | RAID 0, 1, 5, 6, 10, JBOD, Single, TRAID, TRAID+ |
Supported Drive Types | SATA | SATA III, NVMe PCIe 4.0 x4 (caching) |

Products in the top-left offer the best value (high score, low price).

Professional reviewers praise the T12-500 Pro for its desktop-class i7 processor, dual 10 GbE connectivity, and flexible TRAID system, noting enterprise-level performance at a competitive price, while calling out the lack of redundant power and plastic drive trays.
Professional reviewers consider the U4-500 a performance leader in the SMB NAS segment, lauding its dual 10 GbE ports, DDR5 memory, and TOS 6 feature set, while noting limitations such as lack of PCIe expansion and modest base RAM.
Everyday users highlight easy setup, fast backup and streaming, but complain about fan noise, a learning curve for RAID/caching, and occasional software glitches.