Mirenta NS-4991 Prime 4-Bay NAS (1GbE, M.2 Cache)
NAS Systems · Mirenta · SKU NS4991-PRIME · Released 2019 · Updated 2026-10-25
Key facts
| Benchmark index | 4,294 (NAS Systems scale) |
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| Category rank | #47,850 |
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| Street price | $719 |
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| Power | 43 W |
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| Performance per dollar | 5.97 |
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| Released | 2019 |
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Specifications
| Brand | Mirenta |
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| Model | Mirenta NS-4991 Prime |
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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 | 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 1 |
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Related guides
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| Novexa NS-2638 SE 12-Bay NAS (10GbE, M.2 Cache) | 7,119 | $2,329 | Compare |
| Mirenta NS-3634 Core 2-Bay NAS (1GbE) | 2,149 | $289 | Compare |
| Halcyra NS-9507 Prime 6-Bay NAS (10GbE, M.2 Cache) | 6,813 | $1,889 | Compare |
| Halcyra NS-5333 Pro 8-Bay NAS (1GbE, M.2 Cache) | 5,296 | $1,409 | Compare |
| Mirenta NS-2563 Pro 5-Bay NAS (2.5GbE, M.2 Cache) | 5,105 | $1,109 | Compare |
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Cite this page: Hardware Spec Index, “Mirenta NS-4991 Prime 4-Bay NAS (1GbE, M.2 Cache)”, https://vextor7.com/item/94880022 (accessed 2026-10-25).