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Hyper Cache

Hyper Cache is an SSD caching acceleration technology developed by TerraMaster. Compared with traditional SSD caching, Hyper Cache offers two caching modes to meet different usage needs and allows creating SSD arrays to increase caching speed and security. TerraMaster Hyper Cache can significantly enhance storage performance, providing a more efficient and reliable hybrid storage solution.


Management and Operations​

Using the buttons in the feature configuration, you can perform the following operations:

  • Create: Create an SSD cache.
  • Edit: Replace and repair faulty drives in the SSD cache array with new SSDs.
  • Delete: Delete an existing SSD cache.


    • How to Create an SSD Cache?​

    1. Insert the SSD into a TNAS drive slot.
    2. Go to Storage Manager > Hyper Cache and click "Create".
    3. Select a volume to create the cache on.
    4. Select the SSD(s) to create the cache and choose the array type, then click "Next".
    5. The system will notify you that all data on the SSD will be deleted to create the cache. Click "Confirm" to proceed. Enter the administrator password and confirm again to complete this step.
    6. Choose the appropriate caching mode based on your needs and click "Next".
    7. On the confirmation page, click "Confirm".


    What are the Differences Between Caching Modes?​

    Balanced Mode:
    This mode provides preloaded read caching acceleration. Data is written simultaneously to the SSD cache and the hard drive, which may slightly reduce write speed but improves read speed. Balanced mode helps prevent data loss due to SSD failure or power outage. Using two SSDs in a RAID 0 array in this mode can further enhance cache speed. Balanced mode is suitable for users who require high read cache performance but have lower write cache performance demands.

    Read-Write Mode:
    This mode provides acceleration for both read and write operations. Data is first written to the SSD cache and then later to the hard drive. The downside of read-write mode is that it is less secure; if an SSD fails or there is a power outage, data may be lost. To improve the security of read-write mode, multiple SSDs can be used to form a RAID 1 or RAID 5 array, providing redundancy for the cache SSD. This not only increases cache capacity but also reduces the risk of data loss due to SSD failure. Read-write mode is suitable for users who require high performance for both read and write caching.


    How is the SSD Cache Capacity Calculated?​

    The smaller of the following two values is used:

    1. The capacity of the disk used as the SSD cache.
    2. The capacity of the target volume where the SSD cache is created.