Kestrix NS-6921 Ultra 2-Bay NAS (1GbE)
NAS Systems · Kestrix · SKU NS6921-ULTRA · Released 2021 · Updated 2026-10-18
Key facts
| Benchmark index | 1,235 (NAS Systems scale) |
|---|
| Category rank | #5,527 |
|---|
| Street price | $159 |
|---|
| Power | 24 W |
|---|
| Performance per dollar | 7.77 |
|---|
| Released | 2021 |
|---|
Specifications
| Brand | Kestrix |
|---|
| Model | Kestrix NS-6921 Ultra |
|---|
| Drive bays | 2× 3.5"/2.5" SATA, hot-swappable |
|---|
| Max raw capacity | 48 TB |
|---|
| Processor | 4-core ARM, 1.7 GHz |
|---|
| Memory | 2 GB DDR4 |
|---|
| Network | 2× 1GbE |
|---|
| M.2 NVMe slots | None |
|---|
| PCIe expansion | None |
|---|
| RAID | RAID 0/1, JBOD |
|---|
| File system | Btrfs, ext4 |
|---|
| USB | 2× USB 3.2 Gen 1 |
|---|
Related guides
Similar NAS Systems
| Model | Benchmark | Price | Compare |
|---|
| Kestrix NS-9746 Pro 4-Bay NAS (2.5GbE) | 2,408 | $279 | Compare |
| Halcyra NS-1100 Prime 6-Bay NAS (2.5GbE, M.2 Cache) | 4,743 | $1,109 | Compare |
| Novexa NS-1667 Max 2-Bay NAS (1GbE, M.2 Cache) | 3,468 | $559 | Compare |
| Novexa NS-7337 Pro 4-Bay NAS (2.5GbE) | 2,014 | $209 | Compare |
| Kestrix NS-6559 Plus 5-Bay NAS (1GbE, M.2 Cache) | 3,827 | $619 | Compare |
| Kestrix NS-3005 Plus 2-Bay NAS (2.5GbE) | 2,257 | $259 | Compare |
All NAS Systems · JSON
Cite this page: Hardware Spec Index, “Kestrix NS-6921 Ultra 2-Bay NAS (1GbE)”, https://vextor7.com/item/200519 (accessed 2026-10-18).