Choosing NAS storage and drives is a choice between the enclosure that fits your space and the storage starting point you want. A desktop-oriented unit and a rackmount chassis can lead to very different setup decisions, even when both carry the same bay count. The QNAP TS-809 Pro and QNAP TS-809U invite a direct comparison because their physical formats and included drive details point in different directions.
Quick verdict
The QNAP TS-809 Pro is the better match for a desktop-oriented setup. The QNAP TS-809U is the better match when a 2U rackmount format is central. Both are used and carry 8-bay wording, so the decision comes down to the setup details rather than bay count.
Listed-price and feature comparison
| Decision point | QNAP TS-809 Pro | QNAP TS-809U |
|---|---|---|
| Listed price | USD 297.49 | USD 270.75 |
| Format | Desktop External HDD | 2U rackmount NAS storage server |
| Storage starting point | 128GB SSD installed in bay 1 | No HDDs; no caddies |
Where each product wins
- QNAP TS-809 Pro: Best suited to a network plan that specifically calls for an iSCSI target server, a role stated directly in the product title.
- QNAP TS-809U: Better aligned with shoppers prioritizing remote access, with 1 GB cache as another concrete listed attribute.
QNAP TS-809 Pro
The QNAP TS-809 Pro deserves a close look when the included 128GB SSD in bay 1 is useful to your planned setup. That gives the unit a concrete storage starting point, while the model's used condition keeps the choice focused on the configuration rather than a new-unit purchase. The main limitation is practical: it does not include a standard desktop-PC-type power cord, so setup planning includes that accessory. The title also identifies an 8-bay Turbo NAS and an iSCSI target server, but the strongest reason to choose this configuration is the installed drive. It suits shoppers who want that drive included and can account for the missing cord.
QNAP TS-809U
The QNAP TS-809U has a practical differentiator in its 1 GB cache, giving shoppers a concrete reason to favor it when that attribute matters to the intended setup. Its limitation is equally specific: the title states no HDDs and no caddies, so the storage setup begins without those named pieces. The unit is also described as used Grade B, a condition detail worth weighing alongside the hardware configuration. Choose the TS-809U when the cache fits your plan and the missing HDDs and caddies are acceptable. The model's remote-access feature adds another defined reason to consider it for a network-attached storage role.
Final choice by use case
Choose QNAP TS-809 Pro when your network plan specifically calls for the iSCSI target-server role and the included SSD is useful. Choose QNAP TS-809U when remote access is the deciding feature and the $26.74 price spread matters. The TS-809U has the lower listed price, but the better choice depends on whether its rackmount-oriented configuration or the TS-809 Pro's installed-drive setup matches your intended use.
