Halcyra NS-4591 Ultra 4-Bay NAS (1GbE, M.2 Cache)
NAS Systems · Halcyra · SKU NS4591-ULTRA · Released 2019 · Updated 2026-10-26
Key facts
| Benchmark index | 4,073 (NAS Systems scale) |
|---|
| Category rank | #14,690 |
|---|
| Street price | $649 |
|---|
| Power | 43 W |
|---|
| Performance per dollar | 6.28 |
|---|
| Released | 2019 |
|---|
Specifications
| Brand | Halcyra |
|---|
| Model | Halcyra NS-4591 Ultra |
|---|
| Drive bays | 4× 3.5"/2.5" SATA, hot-swappable |
|---|
| Max raw capacity | 96 TB |
|---|
| Processor | 4-core ARM, 1.7 GHz |
|---|
| Memory | 8 GB DDR4 |
|---|
| Network | 2× 1GbE |
|---|
| M.2 NVMe slots | 2× (cache or storage pool) |
|---|
| PCIe expansion | None |
|---|
| RAID | RAID 0/1/5/6/10, JBOD |
|---|
| File system | Btrfs, ext4 |
|---|
| USB | 2× USB 3.2 Gen 1 |
|---|
Related guides
Similar NAS Systems
| Model | Benchmark | Price | Compare |
|---|
| Novexa NS-2737 Ultra 5-Bay NAS (2.5GbE, M.2 Cache) | 5,168 | $1,249 | Compare |
| Halcyra NS-2194 Max 12-Bay NAS (10GbE, M.2 Cache) | 6,262 | $1,809 | Compare |
| Kestrix NS-2117 Pro 12-Bay NAS (10GbE, M.2 Cache) | 6,982 | $2,059 | Compare |
| Novexa NS-6981 Ultra 8-Bay NAS (10GbE, M.2 Cache) | 6,194 | $1,719 | Compare |
| Novexa NS-4580 XT 12-Bay NAS (10GbE, M.2 Cache) | 7,158 | $2,259 | Compare |
| Novexa NS-7059 Ti 8-Bay NAS (2.5GbE, M.2 Cache) | 5,629 | $1,409 | Compare |
All NAS Systems · JSON
Cite this page: Hardware Spec Index, “Halcyra NS-4591 Ultra 4-Bay NAS (1GbE, M.2 Cache)”, https://vextor7.com/item/7724029 (accessed 2026-10-26).