Kestrix NS-8921 Ultra 12-Bay NAS (10GbE, M.2 Cache)
NAS Systems · Kestrix · SKU NS8921-ULTRA · Released 2021 · Updated 2026-10-19
Key facts
| Benchmark index | 6,045 (NAS Systems scale) |
|---|
| Category rank | #11,874 |
|---|
| Street price | $1,839 |
|---|
| Power | 96 W |
|---|
| Performance per dollar | 3.29 |
|---|
| Released | 2021 |
|---|
Specifications
| Brand | Kestrix |
|---|
| Model | Kestrix NS-8921 Ultra |
|---|
| Drive bays | 12× 3.5"/2.5" SATA, hot-swappable |
|---|
| Max raw capacity | 288 TB |
|---|
| Processor | 4-core x86, up to 3.4 GHz |
|---|
| Memory | 8 GB DDR4 |
|---|
| Network | 1× 10GbE + 2× 2.5GbE |
|---|
| M.2 NVMe slots | 2× (cache or storage pool) |
|---|
| PCIe expansion | 1× PCIe 4.0 x4 slot |
|---|
| 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-1312 Edge 12-Bay NAS (10GbE, M.2 Cache) | 6,553 | $2,199 | Compare |
| Halcyra NS-6209 Core 6-Bay NAS (2.5GbE, M.2 Cache) | 4,669 | $969 | Compare |
| Kestrix NS-6689 Prime 8-Bay NAS (10GbE, M.2 Cache) | 7,044 | $2,429 | Compare |
| Halcyra NS-2692 Edge 2-Bay NAS (2.5GbE) | 1,896 | $239 | Compare |
| Mirenta NS-2945 Ultra 6-Bay NAS (10GbE, M.2 Cache) | 6,131 | $1,589 | Compare |
| Kestrix NS-7000 Ti 2-Bay NAS (2.5GbE) | 1,834 | $179 | Compare |
All NAS Systems · JSON
Cite this page: Hardware Spec Index, “Kestrix NS-8921 Ultra 12-Bay NAS (10GbE, M.2 Cache)”, https://vextor7.com/item/8499786 (accessed 2026-10-19).