Kestrix NS-5891 Prime 4-Bay NAS (2.5GbE, M.2 Cache)
NAS Systems · Kestrix · SKU NS5891-PRIME · Released 2025 · Updated 2026-10-26
Key facts
| Benchmark index | 4,752 (NAS Systems scale) |
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| Category rank | #44,676 |
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| Street price | $879 |
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| Power | 44 W |
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| Performance per dollar | 5.41 |
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| Released | 2025 |
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Specifications
| Brand | Kestrix |
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| Model | Kestrix NS-5891 Prime |
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| Drive bays | 4× 3.5"/2.5" SATA, hot-swappable |
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| Max raw capacity | 112 TB |
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| Processor | 8-core x86, up to 3.1 GHz |
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| Memory | 4 GB DDR5 |
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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 |
|---|
| Kestrix NS-1404 Edge 4-Bay NAS (2.5GbE) | 2,930 | $349 | Compare |
| Mirenta NS-9461 SE 4-Bay NAS (2.5GbE, M.2 Cache) | 4,192 | $809 | Compare |
| Kestrix NS-3286 Prime 5-Bay NAS (2.5GbE, M.2 Cache) | 4,554 | $899 | Compare |
| Halcyra NS-7501 Ultra 2-Bay NAS (1GbE) | 1,961 | $249 | Compare |
| Mirenta NS-1486 Prime 12-Bay NAS (10GbE, M.2 Cache) | 7,265 | $2,199 | Compare |
| Kestrix NS-6482 Max 5-Bay NAS (1GbE, M.2 Cache) | 4,333 | $969 | Compare |
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Cite this page: Hardware Spec Index, “Kestrix NS-5891 Prime 4-Bay NAS (2.5GbE, M.2 Cache)”, https://vextor7.com/item/21543220 (accessed 2026-10-26).