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    Synology 20TB HAT3320 Plus Series SATA III 3.5" Internal NAS HDD ( HAT3320-20T)

    • 20TB
    • 16TB
    • 12TB
    • 8TB
    • 6TB
    • 4TB
    • Reliable Always-On Operation - Backed by up to a 1.2 million hours MTBF1 and 180 TB/year workload rating
    • Tested for Maximum Reliability - Stringent validation and over 500,000 hours of testing ensure reliability in Synology systems
    • Seamless Firmware Updates - Firmware updates can be performed directly in Synology DSM
    • Reliable Recording Technology - Conventional magnetic recording (CMR) technology offers consistent performance
    • Retail or OEM packing may vary
    🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available
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    Overview
    Specs
    Reviews (28)
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    SYNOLOGY HAT3320 20TB PLUS SERIES SATA HDD 3.5IN

    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

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    The Synology HAT3320-20T is a 20TB, 7200 RPM, 3.5-inch SATA NAS hard drive suited to users who need high-capacity storage for compatible Synology systems, with CMR recording, a 180 TB/year workload rating, and firmware updates through Synology DSM.

    Recommended For

    • Synology NAS owners adding high-capacity storage for shared folders, backups, and other always-on, multi-user home or small-office workloads—after confirming their NAS model supports the drive.
    • Home media and photo-video archivists who need a large-capacity drive in a Synology NAS for storing and serving files, rather than a portable or low-latency working drive.
    • Small-office teams that keep a Synology NAS running around the clock for centralized file access and routine backups, within the drive’s rated workload.
    • Synology NAS users upgrading a drive who value CMR recording and firmware updates through DSM, provided the exact NAS model is listed as compatible.

    Real-World Use Scenarios

    • When a home or small office NAS is running low on space, adding this drive can provide room for a larger shared file library while keeping files accessible to multiple users on the network.
    • For households backing up several PCs or Macs to one Synology NAS, the drive can serve as added capacity for scheduled backups; recovery still depends on the NAS setup and any separate backup copies.
    • For a growing photo and video collection, using the drive in a Synology NAS can expand local storage for organizing and accessing media across household devices, subject to the NAS and network setup.
    • In a small office where several people access NAS files throughout the day, this Plus Series drive is positioned for always-on, multi-user storage; day-to-day responsiveness will also depend on the NAS, network, and workload.
    • For a home or small-office camera system using Synology Surveillance Station, the drive can add NAS space for recorded footage; how long recordings are retained depends on camera count, recording settings, and the storage-pool configuration.

    Spec Summary

    AttributeValue
    Best ForHigh-capacity NAS storage and daily computing, with support for always-on operation
    Capacity20TB
    Interface And Form Factor3.5-inch internal drive with a SATA III interface
    Performance7200 RPM, 1GB cache, and a listed read/data transfer rate of 295 MB/s
    Reliability And RecordingCMR recording, up to 1.2 million hours MTBF, and a 180 TB/year workload rating; validated with over 500,000 hours of testing
    FirmwareFirmware updates can be performed directly in Synology DSM
    Model IdentifiersSynology HAT3320-20T