Synology HAT5300 SATA 3.5'' Enterprise Series HDD 20 TB Internal Hard Drive for NAS (HAT5310-20T)

Up to 281 MB/s sustained throughput, 512 MB of cache and 7,200 rpm. For high-availability arrays: 550 TB handled per year, 2.5 million hours MTBF and RAID repair up to 27% faster.

Designed for service 24 hours out of 24, 7 days out of 7
Workload of 550 TB per year
MTBF of 2.5 million hours
Rotation at 7,200 rpm
512 MB cache memory
Sustained throughput up to 281 MB/s
SATA 6 Gb/s interface
RAID array repair up to 27% faster on a Synology NAS
Persistent write cache against power cuts
One-click firmware update through DSM

Ref.: HAT5310-20T

Synology HAT5300 SATA 3.5'' Enterprise Series HDD 20 TB Internal Hard Drive for NAS (HAT5310-20T) — image 1

Synology HAT5300 SATA 3.5'' Enterprise Series HDD 20 TB Internal Hard Drive for NAS (HAT5310-20T) — image 2

15 999,00 DHincl. VAT

Configuration · Synology Enterprise Series SATA

HAT5320 4 TB
HAT5320 8 TB
HAT5300 12 TB
HAT5310 16 TB
Configuration shown: HAT5310 20 TB

Out of stock

Available right now

Our in-stock alternatives, in a similar range.

See the 10 available alternatives

Manufacturer's datasheetView the PDF · 166 Ko — downloadable

Product overview

Boost your NAS performance with the Synology HAT5300 20 TB internal hard drive, designed specifically for demanding professional environments. With its SATA III 6 Gb/s interface, 512 MB cache and 7200 rpm spindle speed, it provides stable transfers of up to 281 MB/s. Its 3.5" form factor fits easily into most storage bays. Built for maximum reliability, it offers a service life of 2.5 million hours (MTBF) and an annual endurance of 550 TB written. A robust, high-performance choice for high-availability NAS infrastructures.

See all the specifications ↓

Request a quoteShare:

Available alternatives

Models available from 3 650 DH incl. VAT, in a similar range.

Synology
Synology HAS5300 SAS-3 3.5" Enterprise Series HDD 20TB Internal Hard Drive for NAS (HAS5310-20T)
Low-latency 12 Gb/s SAS protocol and up to 281 MB/s sustained throughput, for critical workloads that never stop. Degraded RAID arrays rebuild up to 27% faster on a Synology NAS.
- Low-latency 12 Gb/s SAS interface
- Designed for service 24 hours out of 24, 7 days out of 7
- Workload of 550 TB per year
In stock
15 999 DHincl. VAT15 999,00 DHincl. VAT
Delivery everywhereDelivered all over Morocco
Synology
Synology HAT5310 SATA 3.5'' Enterprise Series HDD 16 TB Internal Hard Drive for NAS (HAT5310-16T)
16 TB Synology Enterprise Series hard drive built to run 24/7 in a NAS: CMR technology, helium-sealed, 7,200 rpm and a 550 TB/year workload rate. One-click firmware updates from DSM.
Synology
Synology SAT5221 SATA III 2.5" Enterprise Series 3.84 TB Internal SSD for NAS (SAT5221-3840G)
More than 7,000 TB written of endurance and capacitors that protect the data from a power cut. 500 MB/s read as well as write and 90,000 IOPS on random reads, for databases and virtualisation.
Synology
Synology HAT5300 SATA 3.5" Enterprise Series HDD 12 TB Internal Hard Drive for NAS (HAT5300-12T)
Enterprise class: 550 TB of data handled per year, up to 2.5 million hours of MTBF and a persistent write cache that limits data corruption in the event of a power cut.
Synology
Synology HAT5320 SATA 3.5'' Enterprise Series HDD 8TB Internal Hard Drive for NAS (HAT5320-8T)
Firmware updated in one click from DSM, without removing the drive. 512 MB of cache, 7,200 rpm and up to 281 MB/s, with 550 TB handled per year for a service that does not stop.
Synology
Synology HAT3310 12 TB 3.5" Internal Hard Drive (HAT3310-12T)
7,200 rpm and up to 281 MB/s sustained transfer: enough to feed a NAS, a file server or large backups without slowing down, with contained power draw for round-the-clock service.
- Designed for continuous operation
- 7,200 rpm rotation
Synology
Synology SNV3410 NVMe M.2 2280 Enterprise Series 400 GB Internal SSD for NAS (SNV3410-400G)
Designed to run 24/7, it takes an array's cache to 3,000 MB/s read and 750 MB/s write. 491 TB written of endurance, end-to-end data protection and wear monitoring straight in DSM.
Synology
Synology HAT3320 SATA 3.5" Plus Series HDD 8 TB Internal Hard Drive for NAS (HAT3320-8T)
Workload rated at 300 TB a year and sequential reads up to 36% faster than third-party drives of a similar class. Full CMR recording, 7,200 rpm and up to 281 MB/s of sustained throughput.
Synology
Synology HAT5320 SATA 3.5'' Enterprise Series HDD 4 TB Internal Hard Drive for NAS (HAT5320-4T)
Designed for high-capacity arrays and sustained workloads: CMR recording, 7,200 rpm and up to 281 MB/s. It handles 550 TB a year and carries a persistent write cache against power cuts.
Best seller
Synology
Synology HAT3300 SATA 3.5" Plus Series HDD 4 TB Internal Hard Drive for NAS (HAT3300-4T)
Full CMR recording: writes stay consistent throughout the drive's life. 5,400 rpm rotation, 180 TB of data handled per year and firmware updated straight from DSM.

Technical specifications

Technical specifications
Rotational speed	7,200 rpm
Read speed	Up to 281 MB/s sustained transfer
MTBF	2.5 million hours
Annual workload	550 TB/year
Typical power consumption	8.11 W read/write
Standby power consumption	4.38 W idle
Operating temperature	5 °C to 60 °C
Storage temperature	-40 °C to 70 °C
Storage capacity	20 TB
Cache size	512 MB

Technical specifications (continued)
Interface	SATA 6 Gb/s
Storage type	Mechanical hard drive (HDD)
Drive form factor	3.5 inches
Recording technology	CMR (conventional magnetic recording)
Drive design	Helium-sealed
Sector size	512e
Product type	Hard drive for Synology storage systems
Use	NAS & server
Warranty	1 year

Downloads

Fiche technique(PDF)

Customer reviews

No reviews yet

Be the first to review this product and help other customers.

Write a review

Frequently asked questions about this product

Can the Synology HAT5300 20 TB drive run around the clock?

Yes, it is designed to run 24 hours a day, 7 days a week, with a rated workload of 550 TB per year. That is the fundamental difference from a desktop drive, which is built for a few hours of activity a day.

What transfer rates can you expect from the Synology HAT5300 20 TB?

Up to 281 MB/s sustained, with a rotational speed of 7,200 rpm and 512 MB of cache. The sustained rate describes what the drive can maintain over time, not a peak measured over a few seconds.

What interface does the Synology HAT5300 20 TB connect to?

SATA 6 Gb/s, in a 3.5-inch form factor — the standard connection for NAS and server drive bays. Its capacity is 20 TB.

What does the MTBF quoted for this drive mean?

The mean time between failures — here 2.5 million hours. It is not the lifespan of a single drive, but a statistical probability established across a population of drives: it is what an operator uses to size a stock of spares.

What happens in the event of a power cut?

The drive has a persistent write cache: data waiting to be written is not lost when the power goes. This is what limits data corruption during a sudden outage, even before a UPS kicks in.

How long does it take to rebuild a RAID array?

Rebuilds are rated up to 27% faster on a Synology NAS than with a third-party drive. This is the most critical window for a storage array: while the array is degraded, a second failure becomes fatal.

How do you update this drive's firmware?

From DSM, in one click, without removing the drive from its bay. It is a real operational gain: with a third-party drive, a firmware update often means taking it out and connecting it to a dedicated computer.

Is the Synology HAT5300 20 TB drive new and under warranty?

New, reference HAT5310-20T, in the 3.5-inch form factor, in original Synology packaging. The invoice serves as the warranty document for 1 year. Keep it: it is the document requested if you make a claim.