Mirenta NS-6491 Ultra 6-Bay NAS (2.5GbE, M.2 Cache)
NAS Systems · Mirenta · SKU NS6491-ULTRA · Released 2023 · Updated 2026-10-21
Key facts
| Benchmark index | 5,491 (NAS Systems scale) |
|---|
| Category rank | #37,594 |
|---|
| Street price | $1,489 |
|---|
| Power | 59 W |
|---|
| Performance per dollar | 3.69 |
|---|
| Released | 2023 |
|---|
Specifications
| Brand | Mirenta |
|---|
| Model | Mirenta NS-6491 Ultra |
|---|
| Drive bays | 6× 3.5"/2.5" SATA, hot-swappable |
|---|
| Max raw capacity | 144 TB |
|---|
| Processor | 8-core x86, up to 3.3 GHz |
|---|
| Memory | 16 GB DDR5 ECC |
|---|
| Network | 2× 2.5GbE |
|---|
| M.2 NVMe slots | 2× (cache or storage pool) |
|---|
| PCIe expansion | 1× PCIe 4.0 x4 slot |
|---|
| RAID | RAID 0/1/5/6/10, JBOD |
|---|
| File system | Btrfs, ext4 |
|---|
| USB | 2× USB 3.2 Gen 2 (10Gbps) |
|---|
Related guides
Similar NAS Systems
| Model | Benchmark | Price | Compare |
|---|
| Mirenta NS-9727 Edge 2-Bay NAS (2.5GbE) | 2,489 | $279 | Compare |
| Halcyra NS-1566 Core 4-Bay NAS (2.5GbE) | 2,802 | $369 | Compare |
| Kestrix NS-9015 Pro 6-Bay NAS (10GbE, M.2 Cache) | 6,186 | $1,629 | Compare |
| Halcyra NS-8163 Plus 5-Bay NAS (1GbE, M.2 Cache) | 3,754 | $649 | Compare |
| Kestrix NS-4944 Pro 12-Bay NAS (10GbE, M.2 Cache) | 6,570 | $2,229 | Compare |
| Kestrix NS-3758 Plus 8-Bay NAS (1GbE, M.2 Cache) | 5,508 | $1,249 | Compare |
All NAS Systems · JSON
Cite this page: Hardware Spec Index, “Mirenta NS-6491 Ultra 6-Bay NAS (2.5GbE, M.2 Cache)”, https://vextor7.com/item/8344232 (accessed 2026-10-21).