Kestrix NS-9821 Ultra 4-Bay NAS (1GbE, M.2 Cache)
NAS Systems · Kestrix · SKU NS9821-ULTRA · Released 2021 · Updated 2026-10-24
Key facts
| Benchmark index | 3,621 (NAS Systems scale) |
|---|
| Category rank | #957 |
|---|
| Street price | $689 |
|---|
| Power | 42 W |
|---|
| Performance per dollar | 5.26 |
|---|
| Released | 2021 |
|---|
Specifications
| Brand | Kestrix |
|---|
| Model | Kestrix NS-9821 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× 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 |
|---|
| Mirenta NS-6882 XT 4-Bay NAS (1GbE) | 2,287 | $229 | Compare |
| Kestrix NS-8188 SE 2-Bay NAS (1GbE) | 2,992 | $499 | Compare |
| Kestrix NS-7552 Prime 2-Bay NAS (1GbE) | 1,488 | $159 | Compare |
| Novexa NS-6828 Ti 4-Bay NAS (2.5GbE, M.2 Cache) | 3,618 | $539 | Compare |
| Kestrix NS-8699 Max 6-Bay NAS (2.5GbE, M.2 Cache) | 5,946 | $1,489 | Compare |
| Novexa NS-6609 Ultra 4-Bay NAS (1GbE, M.2 Cache) | 4,081 | $709 | Compare |
All NAS Systems · JSON
Cite this page: Hardware Spec Index, “Kestrix NS-9821 Ultra 4-Bay NAS (1GbE, M.2 Cache)”, https://vextor7.com/item/3673405 (accessed 2026-10-24).