Mirenta NS-5721 Ultra 2-Bay NAS (1GbE)
NAS Systems · Mirenta · SKU NS5721-ULTRA · Released 2020 · Updated 2026-10-25
Key facts
| Benchmark index | 1,361 (NAS Systems scale) |
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| Category rank | #45,411 |
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| Street price | $149 |
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| Power | 24 W |
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| Performance per dollar | 9.13 |
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| Released | 2020 |
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Specifications
| Brand | Mirenta |
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| Model | Mirenta NS-5721 Ultra |
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| Drive bays | 2× 3.5"/2.5" SATA, hot-swappable |
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| Max raw capacity | 48 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× 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, 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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| Kestrix NS-4247 Pro 2-Bay NAS (2.5GbE) | 2,491 | $329 | Compare |
| Halcyra NS-1857 Prime 4-Bay NAS (1GbE, M.2 Cache) | 3,434 | $639 | Compare |
| Novexa NS-2985 Plus 4-Bay NAS (2.5GbE, M.2 Cache) | 3,654 | $569 | Compare |
| Mirenta NS-8352 Pro 4-Bay NAS (2.5GbE) | 2,545 | $299 | Compare |
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Cite this page: Hardware Spec Index, “Mirenta NS-5721 Ultra 2-Bay NAS (1GbE)”, https://vextor7.com/item/9612931 (accessed 2026-10-25).