Replacing or adding a caching module

The NVMe SSD Flash Cache modules (FlashCache or caching modules) are separate modules. They are are located in the front of the NVRAM module. To replace or add a caching module, locate it on the front of the system on slot 6, and then follow the specific sequence of steps to replace it.

Before you begin

Your storage system must meet certain criteria depending on your situation:
  • It must have the appropriate operating system for the caching module you are installing.
  • It must support the caching capacity.
  • If you are adding a caching module, it must support the additional capacity as well as the caching module capacity.

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  • All other components in the storage system must be functioning properly; if not, you must contact technical support.


  1. If you are not already grounded, properly ground yourself.
  2. Locate the failed caching module by the lit Attention LED on the front of the caching module.

    Orange release button.
    Caching module cam handle.
  3. Remove the caching module:
    Note: If you are adding another caching module to your system, remove the blank module and go to the next step.
    1. Press the orange release button on the front of the caching module.
      Important: Do not use the numbered and lettered I/O cam latch to eject the caching module. The numbered and lettered I/O cam latch ejects the entire NVRAM module and not the caching module.
    2. Rotate the cam handle until the caching module begins to slide out of the NVRAM module.
    3. Gently pull the cam handle straight toward you to remove the caching module from the NVRAM module.
      Be sure to support the caching module as you remove it from the NVRAM module.
  4. Install the caching module:
    1. Align the edges of the caching module with the opening in the NVRAM module.
    2. Gently push the caching module into the bay until the cam handle engages.
    3. Rotate the cam handle until it locks into place.