Synology HAS5300 Series 20TB Enterprise SAS NAS Hard Drive (HAS5310-20T) – SAS 12Gb/s, 7200 RPM, 512MB Cache, CMR

The Synology HAS5300 Series 20TB (HAS5310-20T) is a 3.5-inch SAS CMR hard drive engineered and validated for Synology NAS systems. Designed for businesses and IT teams running Synology RackStation and enterprise arrays, it combines 7200 RPM operation with DSM firmware updates for dependable 24/7 storage.

The drive Synology validates for its own NAS.

Eliminating Compatibility Worries in Synology NAS

Recent Synology NAS models check drives against Synology’s compatibility list, and unlisted drives can trigger warnings or limit features. Even where third-party drives work, firmware issues are harder to resolve.

The Synology HAS5300 Series 20TB removes that uncertainty. It is tested with Synology hardware and DSM, receives firmware updates through DSM and uses CMR recording for predictable rebuilds. At 20TB per drive, it cuts the number of bays needed for the same usable capacity, which lowers power draw and simplifies Synology NAS expansion.

Full DSM Integration

Drive health, firmware updates and storage-pool management run inside Synology DSM, giving one interface for the whole storage stack.

Built for 24/7 Multi-Bay Operation

Rated for 550TB/year and 2.5 million hours MTBF, the drive is engineered for continuous operation in multi-bay Synology systems. Dual-port SAS supports high-availability RackStation deployments.

Setup Instructions

How to Install the Synology HAS5300 Series 20TB in a Synology NAS

1. Check Synology’s compatibility list for your NAS model.
2. Insert the drive into a tray and slide it into an empty bay (hot-swap on supported models).
3. Open DSM Storage Manager to initialise the drive or add it to a storage pool.
4. Apply any available drive firmware updates in DSM and schedule S.M.A.R.T. tests.