Reformatting the cache
Occasionally, you may need to reformat the cache on a virtual machine after installing Flash Accel. You typically reformat the cache when some kind of error condition exists on the VM.
About this task 
Information in the cache is erased for all disks on the virtual machine when you reformat the cache. The cache will take some time to be rewarmed after reformatting.
Steps 
1.
From the home page of the FAMC, click the wrench icon for the VM and select Advanced > Cache Format.
2.
Result 
The cache is reformatted.
After you finish 
Enable caching on the VM.
Parent Topic: Setting the cache size for virtual machines