Kestrix NS-5901 Ultra 4-Bay NAS (1GbE)
NAS Systems · Kestrix · SKU NS5901-ULTRA · Released 2021 · Updated 2026-10-19
Key facts
| Benchmark index | 3,354 (NAS Systems scale) |
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| Category rank | #20,920 |
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| Street price | $489 |
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| Power | 41 W |
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| Performance per dollar | 6.86 |
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| Released | 2021 |
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Specifications
| Brand | Kestrix |
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| Model | Kestrix NS-5901 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× 1GbE |
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| M.2 NVMe slots | None |
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| PCIe expansion | None |
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| RAID | RAID 0/1/5/6/10, 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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Cite this page: Hardware Spec Index, “Kestrix NS-5901 Ultra 4-Bay NAS (1GbE)”, https://vextor7.com/item/257149 (accessed 2026-10-19).