Seagate Expansion 26TB USB 3.0 Desktop Hard Drive STKP26000400 Black
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    Synology 12 Bay Desktop NAS Expansion Unit DX1215II (Diskless)

    • 5-Bay
    • 12-Bay
    • Expansion Unit DX517
    • DX1215II
    • DX1222
    • 12-Bay
    • Usage Backup & stream media through personal cloud
    • Diskless System
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    Overview
    Specs
    Reviews (44)
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    Any questions? Our AI beta will help you find out quickly.

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    Expansion Unit DX1215II

    Easily add 12 bays to your DiskStation

    The Synology DX1215II is designed for effortless storage expansion for compatible Synology DiskStation* without the need to reformat drives. Plug-n-Play design streamlines setup. And the compact 12-bay desktop form factor minimizes impact on the deployment footprint.

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    Online volume and storage expansion

    Add a new volume to your storage, or seamlessly expand RAID volumes on Synology DiskStation without reformatting drives with online volume expansion through DiskStation Manager (DSM) to minimize service disruptions.

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    Expand DiskStation with Synology drives

    Developed in tandem with Synology storage systems, Synology enterprise storage drives deliver proven interoperability and high reliability through rigorous validation and compatibility testing.

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    Simple setup and management

    Plug-and-play design makes adding the DX1215II to an existing DiskStation simple. Unified drive management through DSM ensures health monitoring, storage allocation, and maintenance tasks are centralized and easily accessible to administrators.

    * View specifications for a list of supported models. Requires DSM 6.2.4-25556 or newer to be installed on the host device.

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Limited Warranty period (parts): 5 years
    • Limited Warranty period (labor): 5 years
    • Read full details

    Return Policies

      We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2025 and December 31, 2025 you will have until January 31, 2026 to return your product.

    • Return for refund until: January 31, 2026
    • Return for replacement until: January 31, 2026
    • This item is covered by Newegg.com's Extended Holiday Return Policy. Read full return policy for details.
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