Halcyra NS-3921 Pro 2-Bay NAS (1GbE)
NAS Systems · Halcyra · SKU NS3921-PRO · Released 2019 · Updated 2026-10-22
Key facts
| Benchmark index | 1,582 (NAS Systems scale) |
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| Category rank | #49,435 |
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| Street price | $179 |
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| Power | 25 W |
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| Performance per dollar | 8.84 |
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| Released | 2019 |
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Specifications
| Brand | Halcyra |
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| Model | Halcyra NS-3921 Pro |
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| Drive bays | 2× 3.5"/2.5" SATA, hot-swappable |
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| Max raw capacity | 48 TB |
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| Processor | 4-core ARM, 1.7 GHz |
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| Memory | 4 GB DDR4 |
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| Network | 2× 1GbE |
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| M.2 NVMe slots | None |
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| PCIe expansion | None |
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| RAID | RAID 0/1, JBOD |
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| File system | Btrfs, ext4 |
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| USB | 2× USB 3.2 Gen 1 |
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Related guides
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|---|
| Kestrix NS-7790 Prime 5-Bay NAS (2.5GbE, M.2 Cache) | 4,305 | $989 | Compare |
| Kestrix NS-6254 Prime 2-Bay NAS (1GbE) | 2,435 | $269 | Compare |
| Halcyra NS-2246 Prime 4-Bay NAS (1GbE, M.2 Cache) | 4,123 | $809 | Compare |
| Novexa NS-9109 Ti 6-Bay NAS (1GbE, M.2 Cache) | 5,445 | $1,339 | Compare |
| Kestrix NS-5588 Pro 2-Bay NAS (2.5GbE) | 3,534 | $539 | Compare |
| Halcyra NS-1227 Ultra 2-Bay NAS (2.5GbE) | 1,929 | $199 | Compare |
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Cite this page: Hardware Spec Index, “Halcyra NS-3921 Pro 2-Bay NAS (1GbE)”, https://vextor7.com/item/11320199 (accessed 2026-10-22).