UniFi UNAS Pro 8
$799 MSRP
UniFi UNAS Pro 8: what it is & who it's for
Eight bays, two NVMe cache slots, 16 GB of memory and three 10-gigabit ports, behind a pair of hot-swappable power supplies. Power redundancy is built in here, where the UNAS Pro and UNAS Pro 4 hand it to a separate USP-RPS. Shared storage that has to stay up: a rack with 2U and 480 mm of depth free, clients on 10-gigabit RJ45 or SFP+, and no appetite for a separate redundant power unit.
Specifications
| Processor | Quad-core ARM Cortex-A57 at 2.0 GHz |
|---|---|
| System Memory | 16 GB |
| Drive Capacity | (8) 2.5/3.5" HDD / SSD + (2) M.2 NVMe SSD |
| SSD Cache | Yes |
| Max NVMe SSD Capacity | 4 TiB |
| Max Power Budget for Drives | 225 W |
| Networking Interface | (2) 10G SFP+ (10G only) + (1) 10 GbE RJ45 (10G/5G/2.5G/1G/100M) |
| RAID Types | RAID 5, RAID 6, RAID 10 |
| RAID Groups | Multiple |
| Hot Spare Support | Yes |
| File Protocols | SMB, NFS |
| Snapshots | Yes |
| File Encryption | Yes |
| Time Machine Backup | Yes |
| Backup Destinations | Remote UNAS, CIFS/SMB server, cloud (Google Drive, OneDrive, Dropbox, Amazon S3, Backblaze B2, Wasabi) |
| Power Redundancy | Yes (dual hot-swappable PSUs) |
| Power Supply | (2) hot-swappable AC/DC 550 W power modules |
| Form Factor | Rackmount (2U) |
| Dimensions | 442.4 × 480 × 87.4 mm |
| Weight | 11.5 kg |
| Max Power Draw | 250 W |
Verdict
Eight bays, two NVMe cache slots, 16 GB of memory and three 10-gigabit ports, behind a pair of hot-swappable power supplies. Power redundancy is built in here, where the UNAS Pro and UNAS Pro 4 hand it to a separate USP-RPS.
Pros
- Eight 2.5/3.5" bays plus two M.2 NVMe slots for SSD cache
- Two 10G SFP+ ports and a multi-gig 10 GbE RJ45 — the RJ45 on the UNAS Pro and UNAS Pro 4 stops at 1 GbE
- Two hot-swappable 550 W power modules, so redundancy needs no USP-RPS
- 16 GB of memory, double the UNAS Pro and UNAS Pro 4
- Multiple RAID groups and hot-spare support, with RAID 5, 6 and 10 listed
Cons
- $799 before a single drive, and eight bays is a large disk bill
- 480 mm deep and 11.5 kg — 155 mm deeper than the UNAS Pro, so check the rack first
- The same quad-core Cortex-A57 at 2.0 GHz as the $499 UNAS Pro 4: the extra $300 buys bays, memory, a faster RJ45 and power modules, not a faster processor
Best forShared storage that has to stay up: a rack with 2U and 480 mm of depth free, clients on 10-gigabit RJ45 or SFP+, and no appetite for a separate redundant power unit.

Alternatives
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