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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
- MTBF of 2.5 million hours
- Rotation at 7,200 rpm
- Sustained throughput up to 281 MB/s
- RAID array repair up to 27% faster on a Synology NAS
- Persistent write cache against power cuts
- Over 200,000 hours of testing on Synology hardware
- One-click firmware update through DSM
Ref.: HAS5310-20T
13 899,00 DHincl. VAT
Configuration · Synology Enterprise Series SAS
- HAS5300 8 TB
- Configuration shown: HAS5310 20 TB
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Receive it between Wed 23 Sept and Fri 25 Sept — free delivery all over Morocco
Free in-store collection: Casablanca (within 24 h) · Témara (within 48 h)
3 years warranty — free repair in Morocco if it breaks down during the warranty period
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Product overview
Optimised for demanding NAS environments, this Synology HAS5300 20 TB internal hard drive offers enterprise-grade performance and reliability. With its 7200 rpm spindle speed and SAS III interface, it delivers sustained read and write speeds of up to 281 MB/s. Its robustness shows in an MTBF of 2.5 million hours and an endurance of 550 TB written, ideal for intensive workloads. Suited to 24/7 systems, it provides stability and longevity in critical environments. A reliable drive for high-capacity NAS infrastructures.
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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 | 8.46 W read/write |
| Standby power consumption | 4.74 W idle |
| Operating temperature | 5 °C to 60 °C |
| Storage temperature | -40 °C to 70 °C |
| Storage capacity | 20 TB |
| Cache size | 512 MB |
|---|---|
| Interface | SAS 12 Gb/s |
| Storage type | Mechanical hard drive (HDD) |
| Drive form factor | 3.5 inches |
| Drive design | Helium-sealed |
| Sector size | 512e |
| Product type | Hard drive for Synology storage systems |
| Use | NAS & server |
| Warranty | 3 years |
Specific references
| EAN | 4711174725823 |
|---|
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Frequently asked questions about this product
Does the Synology HAS5300 SAS 20 TB drive support non-stop operation?
Yes, it is designed for 24 hours a day, 7 days a week service, with a stated workload of 550 TB per year. That is the fundamental difference from a desktop drive, which is sized for a few hours of daily activity.
What transfer rates can you expect from the Synology HAS5300 SAS 20 TB?
Up to 281 MB/s sustained transfer rate, with a rotational speed of 7,200 rpm. The sustained rate describes what the drive maintains over time, not a peak measured over a few seconds.
What difference does the SAS interface make on this 20 TB drive?
12 Gb/s SAS offers twice the throughput of SATA and, above all, lower latency, with dual access paths. Note: it requires a SAS controller. A SAS controller accepts a SATA drive, but the reverse is not true.
What does the stated MTBF for this drive mean?
The mean time between failures — here 2.5 million hours. It is not the lifespan of an individual drive, but a statistical probability established across a population: this is how an operator sizes their stock of spares.
What happens in the event of a power cut?
The drive has a persistent write cache: data waiting to be written does not disappear when power is lost. This is what limits data corruption during a sudden power cut, even before a UPS steps in.
How long does a RAID array rebuild take?
It is stated to be up to 27% faster in a Synology NAS than with a third-party drive. It is the most critical window for a storage system: as long as the array is degraded, a second failure becomes fatal.
Has this drive been proven in Synology storage systems?
More than 200,000 hours of testing on Synology hardware are stated. A drive validated in the very system it will be installed in rules out firmware incompatibilities, a frequent cause of unexplained disconnections.
How do you update this drive's firmware?
From DSM, in one click, without removing the drive from the bay. It is a real operational gain: with a third-party drive, a firmware update often means removing it and connecting it to a dedicated computer.
Is the Synology HAS5300 SAS 20 TB drive new and under warranty?
New, part number HAS5310-20T, in 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 that will be requested in the event of a claim.
