Mirenta NS-4991 Ti 4-Bay NAS (2.5GbE)
NAS Systems · Mirenta · SKU NS4991-TI · Released 2023 · Updated 2026-10-19
Key facts
| Benchmark index | 2,833 (NAS Systems scale) |
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| Category rank | #3,235 |
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| Street price | $429 |
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| Power | 40 W |
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| Performance per dollar | 6.60 |
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| Released | 2023 |
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Specifications
| Brand | Mirenta |
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| Model | Mirenta NS-4991 Ti |
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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 | 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 0/1/5/6/10, 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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| Kestrix NS-9022 Prime 2-Bay NAS (2.5GbE) | 1,993 | $199 | Compare |
| Kestrix NS-9096 Core 8-Bay NAS (10GbE, M.2 Cache) | 7,378 | $2,449 | Compare |
| Mirenta NS-4147 Ti 6-Bay NAS (1GbE, M.2 Cache) | 4,936 | $1,159 | Compare |
| Mirenta NS-7663 Plus 12-Bay NAS (10GbE, M.2 Cache) | 7,163 | $2,219 | Compare |
| Kestrix NS-9078 XT 2-Bay NAS (1GbE) | 1,803 | $189 | Compare |
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Cite this page: Hardware Spec Index, “Mirenta NS-4991 Ti 4-Bay NAS (2.5GbE)”, https://vextor7.com/item/72048627 (accessed 2026-10-19).