Kestrix NS-5191 Ultra 2-Bay NAS (2.5GbE)
NAS Systems · Kestrix · SKU NS5191-ULTRA · Released 2025 · Updated 2026-10-19
Key facts
| Benchmark index | 1,175 (NAS Systems scale) |
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| Category rank | #12,441 |
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| Street price | $169 |
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| Power | 24 W |
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| Performance per dollar | 6.95 |
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| Released | 2025 |
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Specifications
| Brand | Kestrix |
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| Model | Kestrix NS-5191 Ultra |
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| Drive bays | 2× 3.5"/2.5" SATA, hot-swappable |
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| Max raw capacity | 56 TB |
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| Processor | 4-core ARM, 1.7 GHz |
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| Memory | 2 GB DDR4 |
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| Network | 2× 2.5GbE |
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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 2 (10Gbps) |
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Related guides
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| Mirenta NS-5617 Edge 6-Bay NAS (2.5GbE, M.2 Cache) | 5,099 | $1,179 | Compare |
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| Kestrix NS-8684 Edge 5-Bay NAS (2.5GbE, M.2 Cache) | 5,173 | $1,419 | Compare |
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Cite this page: Hardware Spec Index, “Kestrix NS-5191 Ultra 2-Bay NAS (2.5GbE)”, https://vextor7.com/item/20036493 (accessed 2026-10-19).