Halcyra NS-3991 Ultra 12-Bay NAS (10GbE, M.2 Cache)
NAS Systems · Halcyra · SKU NS3991-ULTRA · Released 2024 · Updated 2026-10-21
Key facts
| Benchmark index | 6,830 (NAS Systems scale) |
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| Category rank | #2,293 |
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| Street price | $2,119 |
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| Power | 98 W |
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| Performance per dollar | 3.22 |
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| Released | 2024 |
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Specifications
| Brand | Halcyra |
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| Model | Halcyra NS-3991 Ultra |
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| Drive bays | 12× 3.5"/2.5" SATA, hot-swappable |
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| Max raw capacity | 288 TB |
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| Processor | 4-core x86, up to 3.5 GHz |
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| Memory | 32 GB DDR5 ECC |
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| Network | 1× 10GbE + 2× 2.5GbE |
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| M.2 NVMe slots | 2× (cache or storage pool) |
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| PCIe expansion | 1× PCIe 4.0 x4 slot |
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| RAID | RAID 0/1/5/6/10, JBOD |
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| File system | ZFS |
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| USB | 2× USB 3.2 Gen 2 (10Gbps) |
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Related guides
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Cite this page: Hardware Spec Index, “Halcyra NS-3991 Ultra 12-Bay NAS (10GbE, M.2 Cache)”, https://vextor7.com/item/41677197 (accessed 2026-10-21).