This article covers QNAP(キューナップ) TL-D400S 4ベイ Mini SAS（SFF-8088）接続JBODストレージエンクロージャー QNAP.

Overview

QNAP TL-D400S is a 4-bay JBOD storage enclosure that connects via Mini SAS (SFF-8088). It provides a straightforward way to expand storage capacity for QNAP NAS systems or Windows PCs. The package includes a QXP-400eS-A1164 host bus adapter and an SFF-8088 cable, so you can get started right out of the box. The enclosure supports both 3.5-inch and 2.5-inch SATA drives (HDD or SSD), with a maximum of four drives. It features a compact tower design with LED indicators for drive status, link, and fan error, plus an audible buzzer for system alerts. Noise output is rated at only 20.1 dBA, making it suitable for quiet environments.

Connectivity & Compatibility

The TL-D400S uses a single Mini SAS (SFF-8088) port for host connection. The included QXP-400eS-A1164 adapter card provides the interface on the host side, along with a dedicated SFF-8088 cable. Supported operating systems are QNAP QTS (4.4.2 or later) and Windows (Windows 8 and later, Windows Server 2012 R2 and later). Mac OS is not supported. Drive bays accept SATA 6Gb/s or 3Gb/s drives in both 3.5-inch and 2.5-inch form factors. Hot-swap is not supported, but drives can be replaced when the unit is powered off. The enclosure itself is powered by a 65W external AC adapter.

Product Info

Released around 2020, the QNAP TL-D400S sits in the mid-range segment of storage enclosures. It offers a balanced mix of capacity, connectivity, and price for users who need additional storage without investing in a full NAS. The package includes the host adapter card, cable, power adapter, and quick installation guide. The standard warranty is two years (varies by region). Street pricing is typically around ¥60,000–¥65,000, which is competitive for a 4-bay JBOD enclosure with an included HBA.

Best Use Cases

QNAP NAS owners — If your NAS is running low on storage, this enclosure integrates seamlessly with QTS via Storage & Snapshots Manager. Ideal for expanding a media library or backup repository. Windows PC users with large data workloads — Video editors, photographers, and data hoarders can use the included QNAP JBOD Manager to manage drives. The SFF-8088 connection provides reliable throughput for sequential transfers. * Budget-conscious backup solution — For users who want to add multiple drives to a single enclosure without RAID complexity, JBOD mode offers simple pooling. Good for secondary backup or archive storage. It is not suitable for Mac users, hot-swap environments, or those needing more than four drive bays. If you require PCIe NVMe speeds or USB connectivity, other products may be a better fit.

Product Disclosure (Amazon)

  • Manufacturer: QNAP(キューナップ)
  • Seller: Reg shop
  • Fulfilled by: Reg shop
  • ASIN: B086WCRGXV
  • Note: This article covers a manufacturer-made product based on Amazon listing details.