Novexa NS-2891 Ultra 4-Bay NAS (2.5GbE, M.2 Cache)
NAS Systems · Novexa · SKU NS2891-ULTRA · Released 2024 · Updated 2026-10-19
Key facts
| Benchmark index | 3,410 (NAS Systems scale) |
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| Category rank | #13,184 |
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| Street price | $589 |
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| Power | 42 W |
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| Performance per dollar | 5.79 |
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| Released | 2024 |
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Specifications
| Brand | Novexa |
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| Model | Novexa NS-2891 Ultra |
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| Drive bays | 4× 3.5"/2.5" SATA, hot-swappable |
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| Max raw capacity | 96 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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| Model | Benchmark | Price | Compare |
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| Halcyra NS-3817 Max 2-Bay NAS (2.5GbE) | 1,278 | $149 | Compare |
| Kestrix NS-7830 Ultra 5-Bay NAS (2.5GbE, M.2 Cache) | 4,097 | $659 | Compare |
| Mirenta NS-9648 Pro 8-Bay NAS (10GbE, M.2 Cache) | 6,330 | $2,129 | Compare |
| Novexa NS-4477 Plus 12-Bay NAS (10GbE, M.2 Cache) | 7,042 | $2,299 | Compare |
| Kestrix NS-1185 Max 5-Bay NAS (2.5GbE, M.2 Cache) | 4,629 | $989 | Compare |
| Novexa NS-3837 Edge 6-Bay NAS (10GbE, M.2 Cache) | 6,374 | $1,879 | Compare |
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Cite this page: Hardware Spec Index, “Novexa NS-2891 Ultra 4-Bay NAS (2.5GbE, M.2 Cache)”, https://vextor7.com/item/148209 (accessed 2026-10-19).