Unlocking the Power of Synology NAS with SSD Caching

In the world of network-attached storage (NAS), Synology stands out for its innovative solutions that cater to a wide range of data storage needs. Among its many features, SSD caching is a game-changer, significantly enhancing the performance of Synology NAS systems. This blog post delves into the intricacies of implementing SSD caching on your Synology NAS, exploring its benefits, compatibility considerations, and providing a step-by-step guide to get you started.

Why Implement SSD Caching on Your Synology NAS?

Speed and Efficiency

At its core, Synology SSD caching is designed to boost the performance of your NAS. By storing frequently accessed data on faster SSD drives, read and write operations become much quicker compared to traditional hard disk drives (HDDs). This is particularly beneficial for applications requiring high-speed data access, such as database management, virtualization, and active file sharing among numerous users.

Cost-Effective Upgrades

Integrating SSD caching into your Synology NAS setup offers a cost-effective way to enhance system performance without replacing your existing HDDs. It’s an efficient solution to leverage the speed of SSDs for hot data while retaining the larger storage capacity of HDDs for less frequently accessed information.

Improved User Experience

For businesses and power users, the reduced latency and faster data retrieval times translate to improved productivity and user satisfaction. Whether it’s faster database queries, smoother virtual machine operation, or quicker file access, SSD caching makes a noticeable difference.

Synology SSD Cache Compatibility

Before diving into setting up SSD caching, it’s crucial to understand compatibility requirements. Synology NAS models support SSD caching with specific considerations regarding the SSD type (SATA or NVMe) and the number of bays available for SSD installation. It’s essential to consult Synology’s official compatibility list to ensure your NAS model and chosen SSDs are compatible. Additionally, DSM (DiskStation Manager) version plays a role in the features and capabilities of SSD caching, so ensuring your system is up-to-date is a wise step.

YouTube Video

If you want to watch the process before reading it all. Watch the video below for the configuration of the Synology NAS SSD Cache.

How to Implement SSD Caching on Your Synology NAS

Step 1: Assess Your Needs Begin by evaluating your system’s performance requirements. Use Synology’s SSD Cache Advisor (available in DSM’s Storage Manager) to analyze your data usage patterns and determine the optimal cache size for your needs.

Step 2: Choose the Right SSD Based on the Cache Advisor’s recommendations and your NAS model’s compatibility, select an SSD that meets your performance and endurance needs. Remember, for read-write caching, Synology recommends installing at least two SSDs of the same model and capacity to ensure reliability and performance.

Step 3: Install the SSDs Carefully install the SSDs into your Synology NAS. This process varies depending on your NAS model and the type of SSDs (2.5-inch SATA or M.2 NVMe). Refer to your NAS’s user manual for specific installation instructions.

Step 4: Configure SSD Cache Once the SSDs are installed, open DSM’s Storage Manager and navigate to the SSD Cache section. Here, you can create a new SSD cache. Choose between read-only or read-write cache based on your needs, select the SSDs for caching, and specify the cache size.

Step 5: Monitor and Maintain After setting up the cache, monitor its performance and health through DSM. Keep an eye on the cache usage, hit rate, and SSD health to ensure optimal performance and longevity.


Implementing SSD caching on your Synology NAS is a strategic move to enhance your system’s performance, efficiency, and user experience. By following the steps outlined in this guide and considering compatibility and optimal configuration, you can unlock the full potential of your Synology NAS, ensuring it meets the demands of your data-intensive applications. Whether you’re a business user looking to boost productivity or a home user seeking faster access to your media library, Synology SSD caching is a powerful tool in your NAS optimization arsenal.

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