The Synology Expansion Unit DX517 is a device designed by Synology Inc. for expanding the storage capacity of compatible Synology DiskStation or RackStation models. It provides an additional five drive bays that can be used to add more hard drives or solid-state drives (SSDs) to your Synology NAS (Network-Attached Storage) system.
With the DX517 expansion unit, you can increase the storage capacity of your Synology NAS without having to replace or upgrade the existing drives. The DX517 is connected to the NAS via an eSATA cable and is designed to seamlessly integrate with your Synology NAS, providing a hassle-free storage expansion solution.
The DX517 supports a variety of RAID configurations, including RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10. It also supports hot-swappable drives, making it easy to add or replace drives without disrupting your system's operations.
Overall, the Synology Expansion Unit DX517 is an excellent choice for users who need to expand the storage capacity of their Synology NAS system without the hassle of replacing existing drives or upgrading to a larger system.
5-bay 3.5"/2.5" SATA expansion
Easily add 5 additional drive bays to Synology DiskStation1. Supporting both 2.5" and 3.5" SATA drives, DX517 is a flexible solution supporting on-the-fly volume expansion or serving as a local backup destination.
Online volume expansion
Managed from DiskStation Manager on the host NAS, the additional bays in the DX517 are immediately ready to be used once connected. On-the-fly volume expansion ensures that storage and services on the host are not interrupted during volume expansion.
Hot-swappable drive tray design
The hot-swappable drive trays of DX517 allow easy drive installation and replacement without powering down the system. Screwless drive tray design reduces the time needed for system setup.
Dedicated local backup solution
Synology DX517 can be used as a dedicated local backup solution for the Synology DiskStation. When created as a separate volume, the DX517 provides a great backup solution to its local hard disks in case of system failure.