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Synology

Synology HAT3300 4TB Plus Series SATA HDD 3.5" (HAT3300-4T)

  • Based on 465 reviews
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Availability: In Stock.
Fulfilled by vCloud Choice
Arrives Sep 17 – Sep 19
Order within 4 hours and 3 minutes
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Capacity: 4TB


Features

  • Reliable Always-On Operation - Backed by 1 million hours MTBF and 180 TB/year workload rating
  • Tested for Maximum Reliability - Stringent validation and up to 300,000 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
  • 3-year warranty

Description

Synology Plus Series SATA HDDs are designed to meet the reliability, endurance, and performance requirements of 24/7 storage in Synology small and medium-sized business storage systems. Stringent validation testing and NAS- class reliability ensure consistent performance in high-uptime and multi-user environments.

Digital Storage Capacity: 4 TB


Hard Disk Interface: Serial ATA


Connectivity Technology: SATA


Brand: Synology


Special Feature: Portable


Hard Disk Form Factor: 3.5 inches


Hard Disk Description: Mechanical Hard Disk


Compatible Devices: Desktop


Installation Type: Internal Hard Drive


Hard Disk Size: 4 TB


Digital Storage Capacity: 4 TB


Hard Disk Interface: Serial ATA


Connectivity Technology: SATA


Additional Features: Portable


Hard Disk Form Factor: 3.5 inches


Compatible Devices: Desktop


Hard Disk Rotational Speed: 5400 rpm


Specific Uses For Product: Business


Read Speed: 202 megabytes_per_second


Media Speed: 200 MB/s


Cache Memory Installed Size: 4


Data Transfer Rate: 202 megabytes_per_second


Form Factor: 3.5-inch


Hardware Connectivity: SATA 1.5 Gb/s


Installation Type: Internal Hard Drive


EU Spare Part Availability Duration: 3 years


Enclosure Material: Aluminum Or Glass


Brand: Synology


Model Number: HAT3300-4T


Hard Disk Description: Mechanical Hard Disk


Built-In Media: 1 x HAT3300-4T


Model Name: HAT3300-4T


Manufacturer: Synology


UPC: 846504005352


Mfr Part Number: HAT3300-4T


Warranty Description: 3-year


Hard-Drive Size: 4 TB


Item Weight: 544 g


Number of Items: 1


Unit Count: 1 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 17 – Sep 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Very reliable and cost effective drives for my SYNOLOGY DS-224+ NAS
Capacity: 16TB
Two of these 16TB SYNOLOGY hard drives are in use in my SYNOLOGY DS-224+ 2-bay NAS, setup in a Synology Hybrid Raid 1 (SHR1) configuration spinning 24x7 providing 14+TB of storage, housing all my data and photos. Installation in the toolless SYNOLOGY NAS case is very simple. They’ve been at work for almost a year without any issues. I recently found the price reduced to a point made sense to lay in a spare 16TB for the “just in case” need. I am looking at possibly upgrading to a SYNOLOGY 4 bay model within the next year or so and will need 2 additional 16TB. While there is strong differences of opinion in forums as to the viability of using these drives or 3rd party drives from other major manufacturers in SYNOLOGY NAS devices, I chose to use these based on 2 points. First, the price point for the SYNOLOGY branded 16TB drives (reportedly manufactured by Toshiba) was comparable (within a few dollars) to the 3rd party offerings and secondly, according to SYNOLOGY’s support requirements, using non-approved options “could” impact warranty coverage. Even though some 3rd party drives were on the Approved Equipment List, I personally chose to stay fully with SYNOLOGY to avoid any and all warranty issues that might arise from 3rd party drive use. The access to the NAS using these drives is adequate for my needs. I have not experienced any what I would call abnormal transfer speeds. I’m sure it could be faster if everything was streamlined and optimized. The drives are barely noticeable sound-wise. Occasionally I will hear a slight noise from the NAS as the drives are being accessed but normally really quiet. Being a single user system, it does not run excessively hot, usually the NAS case is just warm to the touch. I suppose if there were many users and the drives were being constantly accessed, the temperatures might be higher. All in all, I have been pleased with the system, performance and maintainability of these SYNOLOGY 16TB drives. ... show more
Reviewed in the United States on August 1, 2025 by Le Brew
    • Who doesn't need more storage?
Capacity: 16TB
I got this for my NAS. Had it for about a year now and I have not had a single issue. Instalation was super easy. It plugged in works great. Runs super quiet. Large storage capacity is always a bonus. Accesses data super fast for being a disk type hdd. Almost to a point that I need another. I use mine for a personal media library so it get used daily. Almost at a point that I need another. I would buy this again! ... show more
Reviewed in the United States on March 2, 2026 by Ajanderson007
    • Works in my Raid
Capacity: 4TB
Works in My Synology and can update firmware.
Reviewed in the United States on July 12, 2026 by Michael A Geans II
    • Quality HDDs for my SynologyNAS.
Capacity: 12TB
A good range of storage capacities, 12TB was perfect for my needs. Well packaged and arrived on time. Addresses the issue that Synology introduced with the compatibility requirement for HDD to be used by their NAS and current version of DSM. In my case I was not able to do a normal drive replacement, it would not work. Be sure to do a complete backup of your data and NAS configuration if you are replacing HDDs in your current NAS. HyperBackup worked perfectly for the backup and restore. ... show more
Reviewed in the United States on July 6, 2025 by Craig Deaton
    • Good, cheap storage…
Capacity: 4TB
Works well. Bought two and mirrored for small NAS storage device. Also bought one for my TiVo Roamio for eight times the original capacity.
Reviewed in the United States on January 20, 2026 by Georgia Yankee
    • Great experience
Capacity: 4TB
Great price and fast shipping, too - thanks!
Reviewed in the United States on March 5, 2026 by hoemee
    • compatible, quiet, not terribly expensive
Capacity: 4TB
OK, I used to have an old 1 bay diskstation which I just filled w/ whatever spare drives I had. Never any trouble, probably ran for 13 yrs w/ various drives demoted from my internal pc bays. Now i have a new synology 2 bay, and had endless trouble using spare drives in it. Reds were just unusably loud. Random spare pc disks consistently failed power on regularly (but only in the DS). In desperation, I got these synology branded drives and everything just works. So, I guess times have changed. Fortunately, these are quiet, work, and aren't even at a horrid premium as I expected them to be. So, I could have saved myself a LOT of time and a little money just going with these from the start, I guess, instead of trying to be cheap. Mixed feelings about that, tbh, but these work, are quiet, and reasonably priced. ... show more
Reviewed in the United States on November 4, 2024 by FBT
    • Worth every penny!
Capacity: 16TB
Shoved it in a Synology DS225+ and haven't had any issues setting it up or formatting the drive. Very fast compared to the other 4 Synology NAS I have all using Seagate drives. It's not necessarily the drive, but maxed out the RAM and a 2.5GB TP-Link switch that make this unit truly shine!
Reviewed in the United States on May 10, 2026 by Jeffrey L Benson

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