Halcyra NS-1821 Max 5-Bay NAS (2.5GbE, M.2 Cache)
NAS Systems · Halcyra · SKU NS1821-MAX · Released 2023 · Updated 2026-10-19
Key facts
| Benchmark index | 4,099 (NAS Systems scale) |
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| Category rank | #24,438 |
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| Street price | $709 |
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| Power | 48 W |
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| Performance per dollar | 5.78 |
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| Released | 2023 |
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Specifications
| Brand | Halcyra |
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| Model | Halcyra NS-1821 Max |
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| Drive bays | 5× 3.5"/2.5" SATA, hot-swappable |
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| Max raw capacity | 120 TB |
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| Processor | 4-core ARM, 1.7 GHz |
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| Memory | 8 GB DDR4 |
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| Network | 2× 2.5GbE |
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| M.2 NVMe slots | 2× (cache or storage pool) |
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| PCIe expansion | None |
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| RAID | RAID 0/1/5/6/10, JBOD |
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| File system | Btrfs, ext4 |
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| USB | 2× USB 3.2 Gen 2 (10Gbps) |
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Related guides
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| Novexa NS-6946 Ultra 12-Bay NAS (10GbE, M.2 Cache) | 6,024 | $2,039 | Compare |
| Halcyra NS-8759 Core 5-Bay NAS (2.5GbE, M.2 Cache) | 4,334 | $719 | Compare |
| Kestrix NS-5177 Max 2-Bay NAS (2.5GbE) | 2,300 | $249 | Compare |
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| Halcyra NS-8494 Core 4-Bay NAS (1GbE, M.2 Cache) | 4,071 | $889 | Compare |
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Cite this page: Hardware Spec Index, “Halcyra NS-1821 Max 5-Bay NAS (2.5GbE, M.2 Cache)”, https://vextor7.com/item/627245 (accessed 2026-10-19).