Mirenta NS-4951 Ultra 4-Bay NAS (2.5GbE, M.2 Cache)
NAS Systems · Mirenta · SKU NS4951-ULTRA · Released 2024 · Updated 2026-10-22
Key facts
| Benchmark index | 4,312 (NAS Systems scale) |
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| Category rank | #3,043 |
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| Street price | $779 |
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| Power | 43 W |
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| Performance per dollar | 5.54 |
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| Released | 2024 |
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Specifications
| Brand | Mirenta |
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| Model | Mirenta NS-4951 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 | 4 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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| Halcyra NS-4436 Pro 4-Bay NAS (2.5GbE, M.2 Cache) | 5,188 | $1,059 | Compare |
| Mirenta NS-9967 SE 8-Bay NAS (10GbE, M.2 Cache) | 5,904 | $1,529 | Compare |
| Halcyra NS-9411 Plus 4-Bay NAS (1GbE, M.2 Cache) | 4,716 | $1,109 | Compare |
| Mirenta NS-3789 XT 6-Bay NAS (2.5GbE, M.2 Cache) | 5,067 | $1,089 | Compare |
| Halcyra NS-8714 XT 6-Bay NAS (2.5GbE, M.2 Cache) | 5,309 | $1,569 | Compare |
| Mirenta NS-8906 Edge 2-Bay NAS (1GbE) | 3,071 | $479 | Compare |
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Cite this page: Hardware Spec Index, “Mirenta NS-4951 Ultra 4-Bay NAS (2.5GbE, M.2 Cache)”, https://vextor7.com/item/20136313 (accessed 2026-10-22).