Kestrix NS-1921 Ultra 5-Bay NAS (2.5GbE, M.2 Cache)
NAS Systems · Kestrix · SKU NS1921-ULTRA · Released 2022 · Updated 2026-10-24
Key facts
| Benchmark index | 4,770 (NAS Systems scale) |
|---|
| Category rank | #23,425 |
|---|
| Street price | $879 |
|---|
| Power | 50 W |
|---|
| Performance per dollar | 5.43 |
|---|
| Released | 2022 |
|---|
Specifications
| Brand | Kestrix |
|---|
| Model | Kestrix NS-1921 Ultra |
|---|
| Drive bays | 5× 3.5"/2.5" SATA, hot-swappable |
|---|
| Max raw capacity | 120 TB |
|---|
| Processor | 8-core x86, up to 3.1 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 |
|---|
| Kestrix NS-2948 SE 5-Bay NAS (2.5GbE, M.2 Cache) | 4,503 | $1,049 | Compare |
| Novexa NS-6180 Ultra 8-Bay NAS (1GbE, M.2 Cache) | 5,425 | $1,689 | Compare |
| Kestrix NS-3664 Edge 12-Bay NAS (10GbE, M.2 Cache) | 6,778 | $2,109 | Compare |
| Halcyra NS-2896 Ti 4-Bay NAS (2.5GbE, M.2 Cache) | 4,219 | $729 | Compare |
| Kestrix NS-4765 Ultra 12-Bay NAS (10GbE, M.2 Cache) | 7,040 | $2,189 | Compare |
| Kestrix NS-4588 Prime 4-Bay NAS (1GbE, M.2 Cache) | 4,549 | $1,149 | Compare |
All NAS Systems · JSON
Cite this page: Hardware Spec Index, “Kestrix NS-1921 Ultra 5-Bay NAS (2.5GbE, M.2 Cache)”, https://vextor7.com/item/3648166 (accessed 2026-10-24).