Start with the number of drive bays you need, then match the processor, memory, and network connections to your workload. The two-bay TerraMaster F2-424 suits buyers who want a smaller system; the four-bay F4-424 adds room for more drives; and the four-bay F4-424 Pro has higher listed processor and memory specifications for buyers considering heavier applications or multitasking. These are comparisons of TerraMaster’s published specifications, not independent performance results.
Compare the F2-424, F4-424, and F4-424 Pro
The main practical difference is whether you need two or four drive bays. The Pro model keeps four bays but lists a higher-spec processor and more memory than the standard F4-424.
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| Model | Drive bays | Published hardware and connectivity | May suit |
|---|---|---|---|
| F2-424 | 2 | Intel N95, 8 GB DDR5, dual 2.5GbE ports, and two M.2 NVMe slots | A home or small-office buyer who wants a two-drive system and does not need four bays. |
| F4-424 | 4 | Intel N95, 8 GB DDR5, dual 2.5GbE ports, and two M.2 NVMe slots | A home or small-office buyer who prioritizes more drive bays and room to grow capacity. |
| F4-424 Pro | 4 | Intel Core i3, 32 GB DDR5, dual 2.5GbE ports, and two M.2 NVMe slots | A buyer considering higher listed CPU and memory specifications for heavier applications or multitasking. |
The comparison reflects TerraMaster’s product-family positioning and official F4-424, F4-424 Pro, and F2-424 listings. They do not establish real-world speed for a particular setup. TerraMaster describes its entry-level range as aimed at personal and home users, and its advanced range as intended for power home users and small offices, including virtualization and multitasking use cases.
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Choose bay count by planning usable capacity
More bays provide space for more drives, but raw capacity is not the same as usable capacity. TerraMaster lists the F2-424 at up to 44 TB raw capacity with two 22 TB drives, and the F4-424 at up to 88 TB raw capacity with four 22 TB drives. The company notes that capacity varies with RAID type; the figures are not a promise of the space available for files in a particular configuration. See the official F2-424 listing and F4-424 listing.
#1 Best Overall
- 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
Estimate the storage you will actually need, account for the capacity trade-offs of your intended RAID setup, and leave room for growth. If two drives meet your needs, the F2-424 avoids buying a four-bay enclosure you may not use. If you expect a larger library or want more drive bays available, compare the F4-424 and F4-424 Pro.
Match specifications to the work
Home file storage and media services
For shared files, backups, and other home uses, begin with bay count and the storage capacity you plan to retain. Do not choose the Pro solely because its processor and memory figures are higher: the official specifications do not show what performance a particular application or household will achieve.
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
Small-office applications and multitasking
If you expect to run several applications or are evaluating virtualization, the F4-424 Pro’s listed Intel Core i3 and 32 GB DDR5 distinguish it on paper from the F4-424’s Intel N95 and 8 GB DDR5. Whether that difference matters depends on the applications, users, and workload. TerraMaster’s advanced-range positioning is a manufacturer description, not an independent ranking or workload test.
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All three models in this comparison list dual 2.5GbE ports. That specification alone does not determine end-to-end transfer speeds: client devices, switch, cabling, and network configuration also affect what a setup can support. The cited product pages do not benchmark a complete home or office network.
Rank #3
- Powerful Hardware: The F6-424 NAS storage features an N95 quad-core 4-thread CPU 3.4GHz (turbo), integrated UHD GPU at 0.75GHz, 8GB DDR5 4800MHz memory (non-ECC, upgradable up to 32GB), dual 2.5G Ethernet ports, and dual M.2 NVMe slots for SSD caching.
- Enhanced Application Speed: The F6-424 NAS enclosure, equipped with a powerful CPU and DDR5 memory, achieves a remarkable 140% performance boost over its predecessors. Experience 90% faster application load times, a 40% increase in file and photo retrieval speed, a 50% improvement in database response speed, and a outstanding 60% faster PHP response for web pages. Elevate your workflow efficiency with seamless high-load performance.
- High-Speed Connectivity: The F6-424 NAS case features dual 2.5 GbE interfaces and can achieve a linear data transmission speed of 283 MB/s (tested with NAS dedicated HDDs 18TB x 4, RAID 0), Link Aggregation offers a network bandwidth up to 5 Gb, ideal for multi-user and high-concurrent file access. Featuring dual USB 3.2 10Gbps interfaces, data transfer between your NAS and external devices is made swift. The F6-424 supports various RAID types, including RAID 0/1/5/6/10/JBOD/Single, TRAID and TRAID+.
- Effortless M.2 SSD Installation: TerraMaster streamlines M.2 SSD handling in the F6-424 NAS server with a side-sliding cover, allowing quick and simple SSD installation. The inclusion of hand-tightened screws ensures a hassle-free installation process. The F6-424 NAS adopts a tool-free hard disk tray, eliminating the need for additional tools during hard disk installation. Additionally, TerraMaster's innovative Push-Lock design automatically secures inserted hard disks, preventing accidental disconnection or offline issues.
- Comprehensive Business Backup Solution: The F6-424 backup server comes with TerraMaster Business Backup Suite (BBS) which is an enterprise-grade solution that includes Centralized Backup for data consolidation, TerraSync for server and PC synchronization, Duple Backup for off-site recovery, CloudSync for cloud recovery, and Snapshot for ransomware protection. BBS offers flexible, high-performance backup strategies tailored for small and medium-sized businesses.
Choose drives separately and check compatibility
The enclosure and storage drives are separate purchase decisions. TerraMaster’s F4-424 specification lists support for 3.5-inch SATA hard drives, 2.5-inch SATA hard drives, and 2.5-inch SATA SSDs. Before buying drives, check the current compatibility information for the exact NAS model and the capacities you intend to use. Do not assume that a drive’s connector or form factor alone guarantees compatibility.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Understand RAID and keep an independent backup
TerraMaster lists RAID 0, 1, 5, 6, and 10, as well as JBOD, Single, and TRAID for the F2-424 and F4-424 materials. These choices involve different trade-offs in usable capacity, fault tolerance, and expansion. The product listings do not establish one universally best configuration, so choose based on your capacity needs and tolerance for drive failure rather than assuming one option fits everyone.
Rank #4
- Powerful 4-Bay NAS with Triple M.2 Expansion & Premium Build: Powered by the Intel N95 Quad-Core CPU (up to 3.4GHz) and 8GB memory, the F4-425 Plus NAS delivers high-efficiency performance for demanding users. Its innovative triple M.2 SSD design supports SSD cache or independent storage pools. All housed in a durable aluminum-alloy chassis with tool-less Push-Lock HDD trays for easy drive installation and long-term reliability.
- Meet TOS 7 – The First AI-Native NAS Operating System, with OpenClaw AI Agent ready to download from the App Center. This 4-bay NAS breaks free from traditional complexity, delivering a fundamental shift from a passive NAS enclosure to an active AI-powered assistant. OpenClaw's natural language interface lets you command your NAS in plain language — no CLI, no menus, no learning curve. TOS 7's one-stop AI platform orchestrates intelligent workflows across storage, backup, and media; while predictive management proactively handles data protection, semantic search, and smart organization. Just tell TOS 7 what you need — it understands, executes, and adapts.
- 4K Multimedia Server for the Whole Family: With hardware 4K decoding and native support for Plex, Emby, and Jellyfin, this multimedia server streams your media library to smart TVs, phones, tablets, and streaming sticks. The TerraMaster Photos app automatically organizes family memories with AI-powered smart categorization.
- Dual 5GbE LAN Ports up to 1020MB/s: Featuring dual 5GbE network interfaces, the F4-425 Plus network attached storage supports link aggregation and SMB Multichannel, achieving up to 1020 MB/s sequential read/write speeds. Ideal for video editors, creative teams, and small business offices that require fast and reliable data access.
- Massive 152TB Storage with TRAID Protection & Data Drive Mounting: The F4-425 Plus NAS server supports up to 152TB total capacity (4× HDD + 3× M.2 SSD). TerraMaster's exclusive TRAID technology optimizes capacity while providing strong data protection. Plus, easily integrate your existing storage: first install TOS 7 on a new drive, then hot-plug your existing data drive for instant access without formatting – keeping all your files secure and untouched. Housed in a durable aluminum-alloy chassis, the F4-425 Plus is built to last.
RAID is not a substitute for an independent backup. Keep another copy of important files on separate storage or another backup destination so a NAS failure, accidental deletion, or other problem does not leave the only copy unavailable.
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Use this buying checklist
- Decide whether two bays are enough or whether you want four bays for additional drive capacity and room to grow.
- Estimate usable storage needs rather than adding drive capacities and treating the sum as available file space.
- List the applications and number of users the NAS will serve; consider the Pro’s higher listed CPU and memory if heavier applications or multitasking are part of the plan.
- Check whether the rest of your network can make use of the NAS’s dual 2.5GbE ports.
- Verify drive compatibility for the exact enclosure and plan an independent backup.
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.
