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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11TerraMaster says its Storage Upgrade Season promotion offers discounts of up to 30% on selected NAS, DAS and SSD products during Amazon Prime Big Deal Days, October 6–7, 2026. The maximum is not a blanket discount: TerraMaster’s official catalog showed the F4-425 Pro at 20% off and the D4-320 at 10% off when checked, and some listings were marked out of stock. Check the price, stock and shipping terms for your exact product and marketplace before ordering.
What the TerraMaster promotion includes
TerraMaster’s campaign announcement identifies October 6–7, 2026, as the Prime Big Deal Days window for its Storage Upgrade Season. It advertises savings of up to 30% on selected products—not 30% off every NAS, DAS or SSD. The announcement describes limited-time offers across participating Amazon marketplaces, as well as promotions through TerraMaster’s official store and other retailers. The stated event window ends October 7; the announcement’s September 29 page date does not establish that these deals were available before the event.
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TerraMaster names Amazon marketplaces in the US, UK, Germany, France, Italy, Spain, Japan, Canada, Australia, the Netherlands, Poland and Sweden. Participation does not mean every product is listed in every country, or that prices and stock match between retailers. See TerraMaster’s campaign announcement and check the listing serving your location.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsExamples of listed products and discounts
The following details come from TerraMaster’s official catalog, not a verified Amazon listing. Prices, discounts, variants and stock can change; some catalog products were marked out of stock when the page was inspected.
#1 Best Overall
- High-Speed Data Transmission: The D4-320 hard drive enclosure (a DAS, NOT a NAS) utilizes the USB 3.2 Gen2 protocol, achieving high-speed data transmission of up to 10Gbps. When equipped with four hard drives, the actual read/write speed can reach up to 1,016 MB/s (combined read/write with four SATA III HDDs of 8TB each). With just one SSD installed, the read speed effortlessly reaches 510 MB/s (SATA III 1TB SSD). The D4-320 supports a single HDD up to 30TB, with a total capacity of 120TB, and is compatible with various hard drives, including 3.5-inch SATA hard drives, 2.5-inch SATA hard drives, and 2.5-inch SATA SSDs
- Plug-and-Play Compatibility: The D4-320 USB storage supports 4 individual disks (NO RAID function), and is plug-and-play, eliminating the need for drivers. It is highly compatible with MAC, Windows, and Linux operating systems. The USB Type-C interface supports various computer interfaces, including USB 3.0, USB 3.1, USB 3.2, Thunderbolt 3, and Thunderbolt 4
- Hot Swappable Convenience: The D4-320 HDD enclosure supports hot swapping, allowing users to replace hard disks without powering off the device. This feature enhances convenience and efficiency in data transfer processes
- Tool-Free Hard Drive Management: Featuring a tool-free hard drive tray design, the D4-320 external HDD enclosure enables easy installation and removal of hard drives without requiring additional tools. Furthermore, the D4-320 incorporates TerraMaster's unique Push-lock design, automatically securing the hard drive tray upon insertion, preventing the hard drive from falling out or disconnecting
- Efficient Heat Dissipation and Quieter Operation: The D4-320 direct attached storage incorporates an intelligent temperature-controlled fan for optimal heat dissipation. Additionally, specialized sound-absorbing panels and vibration damping measures contribute to a quieter operation, with noise levels reduced by up to 50% compared to the previous generation. In standby mode, the noise level drops below 21 dB(A), creating a remarkably quiet user environment
| Product | Category and listed details | Catalog discount observed |
|---|---|---|
| TerraMaster F4-425 Pro | Four-bay Intel hybrid NAS; catalog lists 8-core processor, 8 GB or 16 GB RAM variants, and dual 5GbE ports. | 20% off |
| TerraMaster F4-425 | Four-bay Intel NAS; catalog lists a quad-core processor, 4 GB RAM and 2.5Gbps RJ45. | Not stated in the cited catalog details; check the current listing. |
| TerraMaster F2-425 | Two-bay Intel NAS; catalog lists a quad-core processor, 4 GB RAM and 2.5Gbps RJ45. | Not stated in the cited catalog details; check the current listing. |
| TerraMaster D4-320 | Four-bay USB 3.2 10Gbps HDD enclosure. | 10% off |
| TerraMaster D8 Hybrid 2 | Eight-bay USB 3.2 10Gbps HDD/SSD hybrid enclosure; catalog lists RAID 0/1. | Not stated in the cited catalog details; check the current listing. |
These are descriptions and discount observations from TerraMaster’s deal catalog, not hands-on test results. Confirm the exact SKU, hardware variant and current specification on the product page before buying.
Choose NAS or DAS based on how you will use the storage
Choose a NAS for shared, centrally managed files
A NAS connects to a network and is intended for central storage and file management. That can suit a household or team that needs shared access to photos, videos, backups and other files from multiple devices. The campaign describes NAS as a way to expand capacity while managing files centrally; it does not independently establish the performance or suitability of any particular model.
Rank #2
- Powerful Performance: Equipped with an Intel x86 quad-core processor and 4GB RAM, the F2-425 network attached storage effortlessly handles 4K transcoding and multitasking. The 2.5GbE port ensures ultra-fast file transfers and supports multi-user concurrent access
- Home Multimedia Hub: The F2-425 media server supports hardware-level 4K H.265 decoding, compatible with Plex, Emby, and Jellyfin for smooth HD video playback, with DLNA for seamless multi-device streaming. The Photos app features AI smart album and efficiently organizes millions of photos
- TNAS Mobile Full Control: Initialize setup for your F2-425 NAS storage via the TNAS Mobile app without a PC. The mobile app supports automatic photo and video backups, plus real-time local/remote synchronization, all managed through a single client
- Ultra-Quiet & User-Friendly: The F2-425 NAS server operates at just 19dB(A), suitable for quiet environments like bedrooms. Its tool-free Push-Lock design HDD trays enable to install HDDs in 10 seconds
- Massive Storage & Security: The F2-425 2-bay NAS supports up to 60TB storage (2 x 30TB for each bay), 50+ independent user accounts, and flexible TRAID arrays, saving 30% more storage space than traditional RAID while ensuring data redundancy. SPC security module and CloudSync (supporting Google Drive, OneDrive, Dropbox) guarantee worry-free data protection. Additionally, TerraSync enables two-way sync between the F2-425 and PCs/Macs
Choose DAS for storage attached to a computer
A DAS enclosure connects directly to a host such as a PC or Mac. It can be a practical fit when the storage is primarily for one computer’s backups or large files rather than shared network access. Match the enclosure’s connection to the host and workflow you actually use; an advertised interface rate is not a guarantee of real-world transfer speed.
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Check capacity, drives and compatibility
- Match the number of bays and supported drive types to your current library and likely expansion needs.
- Confirm whether drives are included in the exact listing; the campaign and catalog details cited here do not establish drive bundles.
- Check TerraMaster’s current compatibility information for the exact model and proposed drives or accessories.
- Compare the connection interface with your computer or network, and consider whether your other equipment can use its capabilities.
Verify the live offer and shipping for your location
The official catalog is not a substitute for checking the retailer that will fulfill your order. Before checkout, verify the exact model and variant, final price, stock, seller, delivery estimate and return terms in your own marketplace. An offer’s presence in TerraMaster’s announcement does not confirm that it is available in every participating country.
Rank #3
- High Speed Data Transmission: The D2-320 hard drive enclosure (a DAS, NOT a NAS) adopts USB 3.2 Gen2 protocol for high-speed data transmission up to 10Gbps. With 2 hard drives in RAID 0, the read/write speed can reach up to 521MB/s (SATA III HDD 8TB x 2). With 2 SSD's in RAID 0, the read speed can reach 1075MB/s (SATA III 1TB SSD x 2)
- Multiple RAID Configurations: The D2-320 is a hardware RAID enclosure and it supports RAID 0, RAID 1, JBOD and SINGLE which can better satisfy various demands of users. In RAID 1, data will be in a mirror backup. When there is a damaged hard drive, you can directly replace the hard drive, and the data will be recovered automatically. This provides an absolute security for the data
- Super-Large Storage Capacity: The D2-320 USB storage enclosure can support up to two 3.5" and 2.5" SATA HDD, as well as 2.5" SATA SSD, with a maximum capacity of 22TB per drive, providing users with up to 44TB (22TB x 2) of storage space
- Intelligent Temperature Control: The D2-320 HDD enclosure has an intelligent temperature-controlled and low-noise fan that automatically adjusts its speed based on the temperature of the hard disk. This feature ensures that the hard disk operates at its best temperature and provides better heat dissipation
- Tool-Free Hard Drive Installation: The D2-320 external hard drive enclosure features a tool-free hard drive tray design that allows for easy installation and removal of hard drives without the need for any tools. Furthermore, the D2-320 incorporates a brand new Push-lock unique design from TerraMaster, which automatically locks the hard drive tray when you insert the hard drive, preventing the hard drive from falling out or disconnecting
TerraMaster’s store page displayed a notice that shipments to non-US regions and select US models were temporarily suspended from September 30 through October 7, with normal shipping resuming October 8. That is a store-page notice, not proof that every order or marketplace is affected. Check whether it applies to your region and chosen listing.
Quick Recap
Best Value
- Home Network Storage Solution: The F2-212 NAS storage is an affordable and high-performance 2-bay NAS optimized for home and SOHO users, running the latest TOS 7 operating system
- Powerful Hardware Configuration: The F2-212 network attached storage adopts an ARM v8 quad-core 1.7GHz CPU with 1GB RAM (NOT upgradeable). This NAS server features powerful 4K video hardware decoding capability, and is compatible with uPnP/DLNA protocol, making it a solution to serve as home multimedia center
- Across-Platform File Services: The F2-212 file server supports all mainstream file services: SMB, NFS, SFTP/FTP, AFP, iSCSI, WebDAV; and is provided with multiple permission management of users, user groups, and folders, meeting across-platform file services in various network environments
- Rich Backup Solutions: The F2-212 backup solution can provide robust measures for your valuable information by using its visual user interfaces and trustworthy storage solutions thanks to its integration with multiple backup applications such as Duple Backup, TSSS, TFM Backup, CloudSync and more, which can address backup needs in any circumstances
- Simple and Fast System Installation: TerraMaster provides hands-on online tutorials and videos, with a specially designed Default mode to set all configurations to optimal home mode, so all the steps can be completed after the first initial system installation in just a few minutes
Rank #4
- Powerful Performance: Equipped with an Intel x86 quad-core processor and 4GB RAM, the F4-425 network attached storage effortlessly handles 4K transcoding and multitasking. The 2.5GbE port ensures ultra-fast file transfers and supports multi-user concurrent access
- Home Multimedia Hub: The F4-425 media server supports hardware-level 4K H.265 decoding, compatible with Plex, Emby, and Jellyfin for smooth HD video playback, with DLNA for seamless multi-device streaming. The Photos app features AI smart album and efficiently organizes millions of photos
- TNAS Mobile Full Control: Initialize setup for your F4-425 NAS storage via the TNAS Mobile app without a PC. The mobile app supports automatic photo and video backups, plus real-time local/remote synchronization, all managed through a single client
- Ultra-Quiet & User-Friendly: The F4-425 NAS server operates at just 21dB(A), suitable for quiet environments like bedrooms. Its tool-free Push-Lock design HDD trays enable to install HDDs in 10 seconds
- Massive Storage & Security: The F4-425 4-bay NAS supports up to 120TB storage (4 x 30TB for each bay), 50+ independent user accounts, and flexible TRAID / TRAID+ arrays, 30% more storage space than traditional RAID while ensuring data redundancy. SPC module and CloudSync (compatible with Google Drive, OneDrive, Dropbox) enable seamless cross-platform synchronization and uninterrupted data access. Additionally, TerraSync enables two-way sync between the F4-425 and PCs/Macs
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
