Kestrix NS-8521 XT 4-Bay NAS (2.5GbE, M.2 Cache)
NAS Systems · Kestrix · SKU NS8521-XT · Released 2022 · Updated 2026-10-21
Key facts
| Benchmark index | 5,037 (NAS Systems scale) |
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| Category rank | #33,431 |
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| Street price | $1,049 |
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| Power | 45 W |
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| Performance per dollar | 4.80 |
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| Released | 2022 |
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Specifications
| Brand | Kestrix |
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| Model | Kestrix NS-8521 XT |
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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 | 8-core x86, up to 3.2 GHz |
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| Memory | 8 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 | ZFS |
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| USB | 2× USB 3.2 Gen 2 (10Gbps) |
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Related guides
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|---|
| Novexa NS-5820 Pro 4-Bay NAS (2.5GbE, M.2 Cache) | 3,721 | $619 | Compare |
| Kestrix NS-1779 Prime 4-Bay NAS (2.5GbE) | 2,906 | $399 | Compare |
| Mirenta NS-6020 XT 2-Bay NAS (1GbE) | 3,104 | $499 | Compare |
| Halcyra NS-6946 Pro 8-Bay NAS (10GbE, M.2 Cache) | 7,400 | $2,499 | Compare |
| Mirenta NS-8501 Core 5-Bay NAS (2.5GbE, M.2 Cache) | 4,714 | $1,079 | Compare |
| Kestrix NS-3225 Plus 4-Bay NAS (2.5GbE) | 3,383 | $519 | Compare |
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Cite this page: Hardware Spec Index, “Kestrix NS-8521 XT 4-Bay NAS (2.5GbE, M.2 Cache)”, https://vextor7.com/item/18246777 (accessed 2026-10-21).