Halcyra NS-5591 Ultra 4-Bay NAS (2.5GbE, M.2 Cache)
NAS Systems · Halcyra · SKU NS5591-ULTRA · Released 2023 · Updated 2026-10-22
Key facts
| Benchmark index | 3,290 (NAS Systems scale) |
|---|
| Category rank | #46,741 |
|---|
| Street price | $609 |
|---|
| Power | 41 W |
|---|
| Performance per dollar | 5.40 |
|---|
| Released | 2023 |
|---|
Specifications
| Brand | Halcyra |
|---|
| Model | Halcyra NS-5591 Ultra |
|---|
| Drive bays | 4× 3.5"/2.5" SATA, hot-swappable |
|---|
| Max raw capacity | 96 TB |
|---|
| Processor | 4-core ARM, 1.7 GHz |
|---|
| Memory | 4 GB DDR4 |
|---|
| Network | 2× 2.5GbE |
|---|
| M.2 NVMe slots | 2× (cache or storage pool) |
|---|
| PCIe expansion | None |
|---|
| RAID | RAID 0/1/5/6/10, JBOD |
|---|
| File system | ZFS |
|---|
| USB | 2× USB 3.2 Gen 2 (10Gbps) |
|---|
Related guides
Similar NAS Systems
| Model | Benchmark | Price | Compare |
|---|
| Mirenta NS-3834 Ti 12-Bay NAS (10GbE, M.2 Cache) | 7,204 | $2,119 | Compare |
| Mirenta NS-3010 Plus 5-Bay NAS (2.5GbE, M.2 Cache) | 4,017 | $819 | Compare |
| Halcyra NS-4375 Edge 4-Bay NAS (1GbE, M.2 Cache) | 3,573 | $589 | Compare |
| Novexa NS-9651 Max 6-Bay NAS (10GbE, M.2 Cache) | 6,214 | $2,009 | Compare |
| Kestrix NS-4467 Ultra 2-Bay NAS (2.5GbE) | 1,513 | $169 | Compare |
| Mirenta NS-3159 Prime 8-Bay NAS (10GbE, M.2 Cache) | 5,941 | $1,709 | Compare |
All NAS Systems · JSON
Cite this page: Hardware Spec Index, “Halcyra NS-5591 Ultra 4-Bay NAS (2.5GbE, M.2 Cache)”, https://vextor7.com/item/3560136 (accessed 2026-10-22).