When setting up a NAS, one of the most important and long-lasting decisions you’ll make is choosing the right RAID level. This choice directly impacts how much protection you have against drive failures, how much usable storage space you retain, and how long rebuilds will take when things go wrong. Among the most debated options are RAID 5 and RAID 6, both of which use parity for data protection but differ in how much risk they can tolerate. RAID 5 offers single-drive failure protection with better capacity efficiency, while RAID 6 provides dual-drive fault tolerance at the cost of more storage overhead and longer rebuild times. It’s worth noting that although you can graduate a RAID 5 into a RAID 6 later if your needs change, this is a slow and resource-heavy process. On the other hand, RAID 6 cannot be reversed back into RAID 5, so it’s a decision that requires careful planning from the outset. The balance of speed, safety, capacity, and risk tolerance will determine which configuration is truly best for your setup.
IMPORTANT – It is essential to understand that RAID, whether RAID 5 or RAID 6, should never be considered a true backup solution. RAID protects against drive failures, but it cannot safeguard you from accidental deletion, malware, hardware faults beyond the disks, or disasters like fire and theft.
The TL;DR Short Answer – Over-Simplified, but….
Under 8 Bays = RAID 5
8 Bays or Over = RAID 5, or RAID 6 with Bigger HDDs
12 Bays or Over = RAID 6
If you are looking for simplicity, RAID 5 will usually give you the best balance of speed, storage efficiency, and cost, but it comes with higher risk. RAID 6 is slower to rebuild, consumes more usable capacity, and involves heavier parity calculations, but it provides a much stronger safety net against drive failures. For smaller arrays with modest drive sizes, RAID 5 can be entirely sufficient, especially when paired with reliable backups. However, as drive capacities continue to grow and rebuild times stretch into days, RAID 6 becomes more attractive because it can withstand the failure of two drives without losing the array. In essence, RAID 5 is about maximizing space and performance with a moderate level of safety, while RAID 6 is about maximizing resilience and peace of mind at the expense of capacity and speed. Choosing between them comes down to how valuable your data is, how large your drives are, and how much risk you are willing to tolerate during rebuild windows.
For systems with fewer than 8 bays, RAID 5 will usually be sufficient unless you are running especially large-capacity drives or operating at a business scale where data loss cannot be tolerated. Once you reach 8 bays or higher, RAID 6 should be seriously considered, as the chances of a second drive failing during a rebuild increase along with the overall storage pool size and the scale of potential loss. At 12 bays and beyond, RAID 6 is effectively mandatory, as relying on RAID 5 at that scale means gambling with too many points of failure and too much at stake if something goes wrong.
RAID 5
RAID 6
Pros
Higher usable capacity (only 1 drive lost to parity)
Dual-drive failure protection
Faster rebuild times
Much lower risk of catastrophic rebuild failure
Lower cost per TB
Strong choice for very large drives (10TB+)
Less parity overhead (better write speeds)
Safer for arrays with 6+ disks
Widely supported and simple to manage
More reliable for mission-critical or archival data
Cons
Vulnerable if a second drive fails during rebuild
Slower rebuild times
Higher risk of data loss with large drives
Higher cost per TB (2 drives lost to parity)
Less safe for arrays over 6–8 disks
More computational overhead, slightly slower writes
RAID 5 vs RAID 6 – Build Time and RAID Recovery Time
The initial creation of a RAID array, sometimes called synchronization or initialization, is one of the first differences you’ll notice between RAID 5 and RAID 6. A RAID 5 setup generally completes its initial build faster because it only has to calculate and assign a single parity block across the drives. RAID 6, by contrast, has to generate and distribute two independent parity values on every stripe, which increases the workload on the system. This means that on a fresh setup, RAID 6 will take longer to complete the synchronization process before the array is fully operational, though this is usually a one-time inconvenience at the beginning of deployment. For home and small office setups, this extra build time might not matter too much, but in larger systems with many terabytes of data, it can mean several hours or even days of extra initialization work compared with RAID 5.
The difference becomes more significant when a drive fails and a rebuild is needed. In RAID 5, the system only needs to reconstruct the missing data using the surviving disks and a single parity calculation, which usually makes recovery noticeably faster. RAID 6, however, must perform double parity calculations and restore both sets of parity information onto the replacement drive, extending the recovery window. On large modern HDDs where rebuilds can take dozens of hours, or sometimes multiple days, this extra time becomes a major factor. The trade-off is that RAID 6 offers much stronger resilience while this rebuild is in progress, because the system can continue to operate and survive even if another disk fails during the process. In other words, RAID 5 rebuilds faster but carries more risk, while RAID 6 rebuilds slower but provides a crucial safety margin during the vulnerable degraded state.
Here is a recent video (using the UniFi server platform) that talks about RAID 5/6 vs RAID 10 build times and parity from 777 or 404:
RAID 5 vs RAID 6 – Protection and Vulnerability
The most important factor when comparing RAID 5 and RAID 6 is how well they protect data when drives fail. RAID 5 uses single parity, meaning the system can survive one drive failure without losing data. However, if a second drive fails during the rebuild, the entire array is lost. RAID 6 adds dual parity, which allows the system to tolerate the loss of two drives simultaneously. This extra layer of protection is especially valuable during rebuild windows, which can take many hours or days on modern high-capacity HDDs. In practice, RAID 6 dramatically reduces the risk of catastrophic data loss, at the expense of slower rebuilds and less usable capacity. A subtle but often overlooked vulnerability is the issue of batch manufacturing. Many users buy multiple drives at once, often from the same supplier, meaning the disks may come from the same production batch. If there was a hidden flaw introduced during manufacturing, it is possible that more than one disk could develop problems around the same time. With RAID 5, this creates a dangerous scenario: a second disk failure during a rebuild results in complete data loss. RAID 6 provides a safety margin against these correlated failures by protecting the array even if two drives fail close together in time. Another major risk comes from unrecoverable read errors (UREs) that can occur during rebuilds. Because every sector of every remaining drive must be read to restore the lost disk, the chance of encountering a read error rises significantly with larger drives. In RAID 5, a single URE during rebuild can corrupt the recovery process, whereas RAID 6 has an additional layer of parity to compensate, making it much more reliable during rebuilds. This is especially important in arrays of 8 or more drives, where the probability of encountering at least one problematic sector grows. For users with large arrays or very high-capacity drives, RAID 6’s extra fault tolerance is the difference between a successful rebuild and complete data loss.
RAID 5 vs RAID 6 – Capacity and Price per TB
One of the clearest differences between RAID 5 and RAID 6 lies in how much usable capacity you end up with. RAID 5 only sacrifices the equivalent of a single drive’s worth of storage to parity, which makes it the more space-efficient option. In a six-bay system with 10TB drives, RAID 5 would deliver 50TB of usable storage, while RAID 6 would only provide 40TB. That 10TB difference can be substantial when you are working with large libraries of data such as media collections, surveillance archives, or backups. For users trying to maximize every terabyte of their investment, RAID 5 makes the most efficient use of available space. However, RAID 6’s higher storage overhead translates directly into a higher effective cost per terabyte. Since two drives are always reserved for parity, the total usable space is reduced, and the price you pay for storage per TB goes up. For small home users, this may feel like wasted potential, but the trade-off is the additional layer of fault tolerance. In environments where the cost of downtime or data loss far outweighs the cost of an extra disk, RAID 6 provides stronger long-term value despite the higher price per terabyte. Ultimately, the decision comes down to whether you are more concerned with minimizing cost and maximizing space, or ensuring redundancy and peace of mind.
RAID 6 vs RAID 5 + Hot Spare Drive?
Some users prefer to run RAID 5 with a dedicated hot spare drive rather than choosing RAID 6 outright. In this setup, a single extra disk sits idle until one of the active drives fails, at which point the spare is automatically used for the rebuild. This reduces the amount of time the array spends in a degraded and vulnerable state, since the rebuild begins immediately without waiting for a replacement disk to be manually installed. While this approach still leaves you with only single-drive fault tolerance, it can feel like a middle ground between RAID 5 and RAID 6. In terms of capacity, RAID 5 with a hot spare sacrifices the same amount of usable space as RAID 6, but it does not provide the same dual-drive protection. For arrays of six to eight drives, this compromise can make sense if you prioritize capacity efficiency and faster automated recovery, but once you move into larger-scale storage systems, RAID 6 remains the safer and more resilient option.
RAID 5 vs RAID 6 – Conclusion and Verdict
When choosing between RAID 5 and RAID 6, the decision comes down to weighing efficiency against resilience. RAID 5 is faster to rebuild, provides more usable storage, and costs less per terabyte, which makes it well suited to smaller NAS setups or users who prioritize capacity and speed. RAID 6, on the other hand, offers stronger protection against drive failures, making it far more reliable for larger arrays and higher-capacity drives where rebuild times are long and risks multiply. The general consensus is that RAID 5 can still be a smart choice for arrays under eight bays, but RAID 6 becomes the clear recommendation for systems of eight drives or more, and an essential requirement at twelve drives and beyond. Above all else, it is critical to remember that RAID is not a backup. Neither RAID 5 nor RAID 6 will protect you against accidental deletion, ransomware, hardware faults beyond the disks, or disasters such as fire or theft. RAID is a safety net that improves availability, but it must always be paired with a proper backup strategy if your data truly matters.
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UGREEN DH2300 NAS Review – Cloud Subscription Killer
The UGREEN DH2300 is a compact two-bay NAS system positioned within the company’s value-focused lineup, intended for users moving away from cloud-based storage platforms toward affordable private solutions. Priced around the $200 mark, it is aimed at those who prioritize simplicity and convenience over raw performance or enterprise-level control. Designed for users who typically rely on Google Drive, iCloud, or Dropbox subscriptions, the DH2300 seeks to provide a self-contained alternative with no recurring fees, offering scheduled backups, remote file synchronization, and integrated media access through UGREEN’s proprietary UGOS Pro operating system. Internally, the system is built around an ARM-based processor combining a quad-core Cortex-A72 and quad-core Cortex-A53 architecture, clocked at up to 2.2GHz, with 4GB of LPDDR4 memory and a built-in 32GB eMMC for the OS. This hardware places the DH2300 in direct competition with entry-level models such as the Synology DS223 and QNAP TS-233, though its Rockchip RK3576 processor, G52 MC3 GPU, and 6 TOPS NPU give it a modest edge in AI-assisted photo recognition, multimedia indexing, and energy efficiency. As a compact, preconfigured NAS designed for first-time adopters, the DH2300’s real focus is not to replace professional systems but to bridge the gap between mainstream cloud users and personal storage ownership, reflecting UGREEN’s broader strategy of simplifying NAS technology for general consumers.
UGREEN DH2300 NAS Review – Quick Conclusion
The UGREEN DH2300 is a compact, affordable two-bay NAS designed to bridge the gap between cloud storage and local data ownership for everyday users. Built around the Rockchip RK3576 processor—featuring two quad-core clusters of Cortex-A72 and A53 cores at up to 2.2GHz—and paired with 4GB of LPDDR4X memory, the system offers reliable ARM-level performance with efficient thermals and low noise output. Its design prioritizes simplicity, with vertical drive insertion, a single rear cooling fan, and a dedicated 32GB eMMC for UGOS Pro, which separates the OS from user data. Connectivity includes a 1GbE port, multiple USB 3.2 Gen 1 ports, and HDMI 4K60 output, while the software delivers key NAS essentials such as RAID management, snapshot recovery, cloud and USB backups, Docker support, and AI-powered photo indexing via its 6 TOPS NPU. Power consumption remains low at 9–13W depending on workload, and noise levels stay within 31–45 dBA under varying fan speeds. Although the fixed memory, single LAN port, and ambiguous CPU marketing reduce its appeal for enthusiasts, the DH2300 stands out as an efficient, straightforward, and well-priced solution for users seeking a dependable private cloud alternative without technical complexity.
SOFTWARE - 7/10
HARDWARE - 8/10
PERFORMANCE - 7/10
PRICE - 10/10
VALUE - 9/10
8.2
PROS
Efficient Rockchip RK3576 processor (dual quad-core ARM design) provides strong performance for a low-power NAS. Integrated 6 TOPS NPU enables local AI functions such as face, text, and object recognition without cloud reliance. UGOS Pro offers an intuitive, user-friendly interface with features like RAID management, snapshots, Docker, and backups. Low noise output (31–45 dBA) and excellent power efficiency (9–13W typical use) suit 24/7 home operation. Dedicated 32GB eMMC system drive keeps the OS separate from data volumes for better reliability. HDMI 2.0 4K60 output allows direct media playback and display management. Competitive pricing around $200 makes it a strong entry-level NAS alternative to subscription cloud storage.
CONS
Single 1GbE LAN port limits transfer speeds and network scalability. Fixed 4GB memory restricts heavy multitasking or Docker use. Spending just $100-150 more gets you much, much more capable x86 powered systems
The UGREEN DH2300 adopts a clean, vertical form factor made entirely of plastic, emphasizing practicality and low cost over premium materials. The enclosure is lightweight yet well-ventilated, featuring a magnetic plastic top panel with slotted air channels that promote consistent airflow across both drive bays. The overall construction favors simplicity, with drive access positioned vertically rather than through traditional caddies. This layout helps minimize the unit’s footprint, making it suitable for desktop environments where noise and vibration are key considerations. While the plastic frame lacks the rigidity of aluminum enclosures seen in higher-end NAS models, it contributes to lower noise resonance and reduced amplification of mechanical drive vibration. The minimalist aesthetic, consistent with UGREEN’s other recent NAS releases, reflects its target audience: users seeking a consumer-friendly device that blends into a home office or living space rather than a server rack.
Internally, the DH2300 supports two 3.5-inch or 2.5-inch SATA drives, each connecting directly to fixed SATA connectors mounted on the board. The drive trays are basic but functional, requiring manual screw installation rather than tool-less mechanisms. Although UGREEN has not explicitly advertised hot-swapping as an official feature, testing showed that it is technically possible to replace drives without powering down, though such actions are not recommended without confirmation from official documentation. The NAS supports standard RAID configurations, including JBOD, RAID 0, and RAID 1, as well as individual drive modes, providing adequate flexibility for redundancy or performance-based setups. Storage initialization is straightforward within UGOS, with pool creation and volume setup guided by a wizard interface that fits the product’s “set-and-forget” philosophy.
Cooling is handled by a single rear-mounted fan positioned behind the drive bays, ensuring that heat generated by mechanical disks is efficiently extracted from the enclosure. The system’s vertical drive layout assists in natural convection, drawing air from the lower portion and expelling it from the top and rear. Despite being a plastic chassis, thermal management remains effective due to the extensive side and rear ventilation grilles, which circulate air across both drives and the mainboard components. In long-term use, the design demonstrated stable internal temperatures under typical file access and synchronization loads, maintaining drive and board thermals within an expected operational range even during extended testing periods.
From a functional standpoint, the DH2300 includes an internal 32GB eMMC module reserved for UGOS, preventing users from needing to dedicate part of their main storage array to system files. This separation simplifies setup and improves reliability by isolating the operating system from data drives. However, there are no M.2 or NVMe expansion slots available, meaning caching or SSD-tiered storage cannot be implemented. This is consistent with UGREEN’s entry-level positioning for the model, and the omission helps reduce production cost while keeping the power footprint low. The 32GB internal storage performs adequately for OS updates, indexing data, and temporary system operations.
The device’s storage capacity can reach up to two 30TB drives, allowing a maximum theoretical total of 60TB raw capacity, though most users will likely configure it in RAID 1 for redundancy. This makes the DH2300 a practical fit for home backup, photo archiving, and small-scale media libraries, especially when paired with the system’s built-in applications for photos, video, and document management. Overall, the DH2300’s design and storage layout reflect its goal of balancing ease of use with functional flexibility, providing just enough configurability to support typical home NAS workloads without introducing complexity that would deter less technical users.
UGREEN DH2300 NAS Review – Internal and External Hardware
Internally, the UGREEN DH2300 is powered by the Rockchip RK3576 processor, a hybrid 8-core ARM SoC that combines four high-performance Cortex-A72 cores with four efficiency-focused Cortex-A53 cores, running at up to 2.2GHz. While UGREEN markets this configuration as an “8-core processor,” it is technically composed of two separate quad-core clusters, something the company’s documentation does not clearly explain. This lack of clarity can mislead users into expecting a single unified 8-core design, whereas in practice the chip functions as two 4-core groups optimized for different workloads. The RK3576, built on an 8nm process, delivers a solid balance between efficiency and multitasking, keeping thermals low while maintaining adequate throughput for home NAS tasks. Its integrated ARM G52 MC3 GPU supports up to 8K H.265/H.264 decoding and HDR rendering through Rockchip’s dedicated Picture Quality Engine, which also supports ACM and DCI color profiles. These capabilities allow the DH2300 to output 4K60 video via HDMI, offering lightweight media playback directly from the system interface—an uncommon inclusion in this price class. Additionally, the CPU’s built-in 6 TOPS NPU enables AI-assisted indexing and face recognition within UGOS Pro, processing such tasks locally instead of relying on cloud services.
Memory allocation on the DH2300 is fixed at 4GB of LPDDR4X, soldered to the mainboard with no expansion slot available. This restriction aligns with the model’s consumer-grade purpose, though it naturally caps Docker container and multitasking potential. The onboard memory is sufficient for file serving, indexing, and moderate background services, while the 32GB eMMC 5.1 storage is dedicated to UGOS Pro and ensures stable OS operations without user intervention. There are no NVMe or UFS storage options, which simplifies the hardware layout but limits potential caching or high-speed data tiers. Nevertheless, the RK3576’s low power draw and balanced architecture ensure consistent operation under typical workloads, even during prolonged use, with minimal heat output and silent operation under idle conditions.
Externally, the NAS presents a modest selection of connectivity options suitable for its market position. The rear hosts a single 1GbE LAN port—adequate for most home users but a notable downgrade from the 2.5GbE interface found on UGREEN’s larger models like the DH4300 PLUS. File transfers, backups, and streaming functions remain well within the limits of 1GbE for single-user environments, though network saturation can occur during multi-user access. Peripheral connectivity is handled by two USB-A 3.2 Gen 1 ports and one USB-C 3.2 Gen 1 port, all operating at 5Gbps, supporting external drives, UPS communication, or backup targets. An HDMI 2.0 port on the rear supports 4K60 output for local playback or display configuration, while system LEDs provide visual feedback for drive activity, system status, and network connection. Power is supplied by a 50W external adapter that connects via a barrel plug, keeping internal temperatures and noise low by externalizing the PSU.
The inclusion of HDMI output in such a budget-focused system underscores UGREEN’s attempt to merge NAS and home entertainment functions. Although the RK3576 chipset supports a wider range of display interfaces—including DisplayPort, MIPI, and eDP—these are not implemented in the DH2300’s design, reflecting deliberate simplification for cost and usability. The absence of multi-gigabit networking, PCIe expansion, or additional LAN redundancy limits its potential for advanced setups, yet for its intended audience the configuration remains practical. In short, the DH2300’s internal layout, despite its simplified design and some ambiguous marketing around the CPU, delivers an efficient and capable platform for mainstream home users seeking affordable private storage.
Component
Specification
CPU
Rockchip RK3576 – Quad-Core Cortex-A72 + Quad-Core Cortex-A53, up to 2.2GHz
GPU
ARM Mali-G52 MC3
NPU
6 TOPS (RKNN)
Fabrication Process
8nm
Memory
4GB LPDDR4X (non-expandable)
System Storage
32GB eMMC 5.1
Drive Bays
2 x 3.5″/2.5″ SATA
Maximum Capacity
Up to 30TB per drive (60TB total)
RAID Support
JBOD, RAID 0, RAID 1
LAN
1 x 1GbE RJ-45
USB Ports
2 x USB-A 3.2 Gen 1, 1 x USB-C 3.2 Gen 1
HDMI Output
1 x HDMI 2.0 (4K60 supported)
Power Supply
External 50W Barrel Adapter
Chassis Material
Plastic (ventilated top and sides)
UGREEN DH2300 NAS Review – UGOS NAS Software and Services
UGREEN’s DH2300 runs the company’s proprietary UGOS Pro, a Linux-based operating system tailored for simplicity and everyday use. The interface mirrors the design language of mainstream consumer cloud platforms, featuring a desktop-style environment with drag-and-drop file management, live system monitoring, and user account controls. Although UGOS Pro shares much of its design and functionality with that found on UGREEN’s larger DH4300 PLUS model, a few service limitations appear due to the ARM-based architecture of the DH2300. These include the absence of virtual machine support and limited resource capacity for multiple Docker containers, stemming from the 4GB of fixed memory. Nonetheless, the software remains fully featured for file storage, synchronization, multimedia management, and light AI applications, and receives regular over-the-air updates that refine usability and security. The desktop and mobile clients also synchronize settings seamlessly, allowing users to manage their NAS both locally and remotely.
From a user management perspective, UGOS provides fine-grained control of accounts, permissions, and network access. Administrators can create user groups, apply password complexity policies, and define shared-folder privileges with ease. The system supports multiple file transfer protocols, including SMB, AFP, NFS, and Rsync, as well as optional WebDAV and FTP for broader compatibility. Remote access can be configured either through UGREEN’s own relay service or via LAN-only mode for tighter network security. The security dashboard consolidates features such as auto-block for repeated failed logins, two-factor authentication, firewall configuration, and selective port access rules. SSH and Telnet access are disabled by default, a responsible design choice for less experienced users, but can be enabled manually for advanced administration. These features bring the DH2300 close in functionality to entry-level NAS systems from Synology or QNAP, even though it remains less configurable overall.
Storage management is one of UGOS Pro’s more mature components. Users can create storage pools and volumes in JBOD, RAID 0, or RAID 1, with scheduled drive tests, SMART diagnostics, and Seagate IronWolf Health integration for supported drives. The storage manager also includes rebuild and repair settings that allow users to prioritise either RAID reconstruction speed or system performance during rebuilds. Snapshot protection is integrated at the folder level, with both versioned and scheduled snapshots available for data recovery. Although the system does not offer full OS-level backups, users can schedule NAS-to-NAS, NAS-to-USB, and NAS-to-Cloud synchronisation tasks using Rsync or proprietary tools. These backups can include filters for file type, size, and modification date, making them adaptable to both personal and small office usage. In practice, the storage controls are intuitive and well-implemented for a first-generation NAS platform, with sufficient safeguards for casual users who might otherwise rely on third-party cloud apps.
Application availability has steadily improved since UGREEN’s NAS debut in 2023 (at least, in the ‘west’, as they have been a NAS name in the east since 2020/2021). The App Center now includes a range of first-party utilities such as a file manager, photo station, video station, and music library, as well as third-party options like Plex, Jellyfin, and Docker containers. AI-based features such as face, text, and object recognition are supported thanks to the 6 TOPS NPU in the RK3576, though performance varies depending on workload size. The integrated Vault app provides encrypted storage areas secured by password or downloadable key, which can be auto-locked on reboot for privacy. Meanwhile, the mobile companion app mirrors almost every desktop function, from user and storage administration to Docker control and media playback. Having all management tasks accessible within a single unified mobile app, rather than separate applications for photos or video, demonstrates UGREEN’s streamlined approach to usability, positioning UGOS Pro as a consumer-friendly OS that hides most of the NAS complexity from first-time users. However, I cannot stress enough that this software is still a decent way behind long-established players such as Synology DSM and QNAP QTS in terms of features, maturity and client support. Additionally, as one of the newest names in the world of NAS, the brand has yet to be truly ‘tested’ when it comes to security strength and how they handle/respond to a larger scale security incident. So wheat we find here is good enough for hte price point, but is only a small step or two above what users have come to expect from privately owned NAS nonetheless in 2025/2026.
UGREEN DH2300 NAS Review – Heat, Noise and Power Consumption Tests
Thermal and acoustic performance on the UGREEN DH2300 is generally stable and consistent with expectations for a low-power ARM-based NAS. The system uses a single rear-mounted fan that automatically adjusts its RPM in response to internal temperature sensors, aided by the ventilated top and side panels. During extended operation, the fan demonstrated smooth, gradual speed transitions rather than abrupt cycling, which helped minimize background noise. With two 4TB Seagate IronWolf drives installed, the system recorded approximately 31–32 dBA in idle mode with the fan set to “Low” in UGOS. When switched to “Auto,” and under light file activity, readings rose to 33–35 dBA, while heavier read and write operations increased noise levels to 38–41 dBA. Under maximum fan speed, levels peaked at 44–45 dBA, making the fan audible but still within acceptable limits for a desktop environment. The use of plastic housing reduces the resonance that typically amplifies drive vibration in metal enclosures, although some low-frequency hum remains during heavy disk access.
Temperature readings taken over a 24-hour mixed-use test period show that the chassis maintains good internal thermal balance, aided by vertical airflow and efficient low-wattage components. The NAS was powered down overnight before the test, then reactivated for hourly upload and backup tasks, simulating intermittent real-world usage. During idle periods, the drives stabilized at 35–37°C, while moderate access cycles pushed them to 42°C. The motherboard and surrounding airflow remained at approximately 34–35°C, with rear exhaust temperatures registering slightly higher. Despite the passive nature of some cooling zones, heat accumulation around the CPU remained minimal, peaking around 50–60°C during sustained transfer activity. These figures suggest that UGREEN’s internal airflow design, while basic, is sufficient for continuous operation with standard HDDs. Users in warmer climates or those employing higher-RPM drives might consider increasing fan control sensitivity via UGOS to maintain consistent thermals.
Power consumption results were equally conservative. With two 4TB mechanical drives installed and the system idle at below 5% CPU utilization, the DH2300 drew roughly 9.5W, a competitive figure for a two-bay NAS. During typical data transfers and 50% CPU load, draw increased modestly to 12–13W, remaining far below that of comparable x86-based systems. The external 50W power adapter ensures the NAS operates efficiently while reducing internal heat buildup. Users employing SSDs instead of HDDs could expect overall consumption to drop by an additional 4–5W, further improving energy efficiency. These results confirm the DH2300’s suitability for continuous operation, including 24/7 use as a network backup target or low-impact media server.
Its minimal noise and low thermal footprint make it a non-intrusive addition to a home or small office environment, aligning with its purpose as a budget, always-on NAS solution.
Test Condition
Fan Mode
Noise Level
CPU Temp
Drive Temp
Power Draw
Idle (Low Fan)
Low
31–32 dBA
45°C
35–37°C
9.5W
File Activity (Auto Fan)
Auto
33–35 dBA
50°C
39–41°C
12W
Sustained Read/Write
High
38–41 dBA
55°C
42°C
13W
Max Load (Fan Max)
Max
44–45 dBA
60°C
43°C
13W
SSD Configuration (Est.)
Auto
30–32 dBA
48°C
33–35°C
8W
UGREEN DH2300 NAS Review – Verdict and Conclusion
The UGREEN DH2300 represents a carefully positioned step in the company’s ongoing effort to make private storage approachable for non-technical users. Its hardware configuration, led by the Rockchip RK3576 processor and 4GB of fixed memory, provides solid baseline performance for a two-bay ARM-powered NAS at this price point. Although its single 1GbE network port may limit throughput for larger file transfers, the system compensates with a highly efficient power profile, quiet operation, and full support for common RAID configurations. The inclusion of a dedicated 32GB eMMC system drive, HDMI 4K60 output, and an NPU capable of AI-based photo indexing places it above most similarly priced entry-level alternatives from QNAP and Synology. However, certain aspects of UGREEN’s marketing—particularly the way the dual quad-core CPU clusters are presented as a single 8-core design—could be clearer. Likewise, the absence of upgradeable memory or faster networking options limits its long-term scalability for users seeking to expand their NAS environment beyond basic media and backup tasks.
From a broader standpoint, the DH2300’s strongest appeal lies in its simplicity and low operational overhead. UGOS Pro, though still developing in maturity, has evolved into a competent, user-friendly platform offering the key features needed for home data management, multimedia access, and scheduled backups. The OS’s stability, combined with efficient hardware and lightweight design, makes this NAS a practical alternative to annual cloud subscriptions for users who simply want local control over their data. It is not a system aimed at enthusiasts or professionals demanding virtual machines, multi-gig networking, or broad third-party OS support, but rather those seeking a self-contained, reliable, and low-maintenance device. Within that niche, the DH2300 delivers strong value and performs consistently well for the intended demographic—serving as an accessible first step into local storage ownership.
This description contains links to Amazon. These links will take you to some of the products mentioned in today's content. As an Amazon Associate, I earn from qualifying purchases. Visit the NASCompares Deal Finder to find the best place to buy this device in your region, based on Service, Support and Reputation - Just Search for your NAS Drive in the Box Below
Need Advice on Data Storage from an Expert?
Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you.Need Help?
Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry.
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