Synology 24TB HAT5320 SATA III 3.5" Internal Enterprise HDD

BH #SYHAT532024T • MFR #HAT5320-24T
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Synology 24TB HAT5320 SATA III 3.5" Internal Enterprise HDD
Key Features
  • 24TB Storage Capacity
  • 3.5" Form Factor
  • SATA III 6 Gb/s Interface
  • 1GB Cache
Designed to tackle demanding, high-volume workloads in 24/7 environments, the 24TB HAT5320 SATA III 3.5" Internal Enterprise HDD from Synology delivers greater multi-client sequential read performance and high levels of reliability. The HAT5320 has a Mean Time Before Failure (MTBF) rating of 2.5 million hours, a yearly workload rating of 550TB, and is filled with helium instead of regular air. Also featured is a storage capacity of 24TB, a SATA III 6 Gb/s interface, a 1GB cache, and a rotational speed of 7200 rpm, all of which help to ensure uninterrupted data transfers with sustained speeds of up to 309 MB/s.
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Synology HAT5320 Overview

Designed to tackle demanding, high-volume workloads in 24/7 environments, the 24TB HAT5320 SATA III 3.5" Internal Enterprise HDD from Synology delivers greater multi-client sequential read performance and high levels of reliability. The HAT5320 has a Mean Time Before Failure (MTBF) rating of 2.5 million hours, a yearly workload rating of 550TB, and is filled with helium instead of regular air. Also featured is a storage capacity of 24TB, a SATA III 6 Gb/s interface, a 1GB cache, and a rotational speed of 7200 rpm, all of which help to ensure uninterrupted data transfers with sustained speeds of up to 309 MB/s.

Enterprise Reliability and Durability
For demanding 24/7 environments, rated for 2 million hours MTTF, and up to 550TB per year workloads.
Persistent Write Cache Technology
Minimizes the chance of data corruption in the event of sudden power loss.
Better Together
Firmware and DiskStation Manager (DSM) optimizations improve multi-client sequential read performance by up to 23%.
One-Stop Update
Get automatic firmware updates together through DSM updates, reducing the need for additional maintenance sessions.
For Synology, by Synology
Stringent validation and up to 500,000 hours of tests helps ensure greater reliability in Synology systems.
Scale Up Confidently
Synology HAT5300 drives are engineered to provide fast and dependable performance, even for a large number of clients. Firmware and software collaborate to deliver enhanced performance, with sequential read speeds that are 23% higher than drives with a similar capacity. The HAT5300 provides outstanding performance for large-scale video surveillance, multimedia post-production, and enterprise file server environments.
Endurance and Reliability
Designed with Synology's expertise in storage systems, HAT5300 series drives are backed by a 2 million hour MTBF rating, workload support of 550TB per year, and persistent write cache technology. Over 500,000 hours of compatibility and stress testing ensure that the HAT5300 can continuously operate, even under extreme workloads with Synology's NAS and IP SAN lineup. Combined with data protection solutions running on Synology systems, you can confidently depend on your data 24/7 using HAT5300 series drives. Combined with data protection solutions running on Synology systems, you can confidently depend on your data 24/7 using HAT5300 series drives.
Streamlined Maintenance for Reduced Downtime
The HAT5300 series drives feature one-click firmware update capability within DSM. This user-friendly update process reduces maintenance time from over 50 minutes to just a few minutes per system, eliminating the need for Linux command line operations. Additionally, using Synology hard disk drives along with Synology systems simplifies IT infrastructure as the entire system receives support from Synology.
UPC: 846504006540

Synology HAT5320 Specs

Key Specs
Total Capacity
24 TB
Drive Type
SATA III / 3.5" HDD (7200 rpm)
Read Speed
Maximum: 309 MB/s
Write Speed
Maximum: 309 MB/s
Total Capacity
24 TB
Drive Type
SATA III / 3.5" HDD (7200 rpm)
Performance
Read Speed
Maximum: 309 MB/s
Write Speed
Maximum: 309 MB/s
Encryption Support
No
Mean Time Between Failures (MTBF)
2.5 Million Hours
Endurance (Total Bytes Written)
550 TB
Electrical
Power Draw
8.11 W (Active)
4.35 W (Idle)
General
Operating Conditions
41 to 140°F / 5 to 60°C at 5 to 90% Humidity
Operating Shock
70 G / 2.0 ms
Storage Conditions
-40 to 158°F / -40 to 70°C at 5 to 95% Humidity
Dimensions
5.8 x 4.01 x 1" / 147 x 101.85 x 26.1 mm
Weight
1.6 lb / 730 g
Packaging Info
Package Weight
1.86 lb
Box Dimensions (LxWxH)
8.9 x 6.1 x 3"

Synology HAT5320 Reviews

So far, so good.

By Brian
Rated 5 out of 5
Date: 2026-06-22

No issues. Working great so far.

No problems so far

By Robert
Rated 5 out of 5
Date: 2026-02-02

Ordered three of these drives over the last few months and everything went great. I’m putting them in a Synology RS822 and replacing older WD drives. The RAID rebuild and scrub went fine and the drives seem super quick. They also run cooler than the WD Gold drives I’m replacing. Hoping to get a decade out of these drives.

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