Managing Flash Accel caching systems
: Setting the cache size for virtual machines
Setting the cache size for virtual machines
When you set the cache size for a virtual machine, you reserve a portion of the flash device on the ESXi host for use as cache by applications running on the VM.
Flash Accel
performance statistics will tell you whether you have too much or too little cache allocated for the VM.
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Allocating cache
You need to
allocate
cache to a virtual machine before you can enable the VM for caching. Cache allocation reserves a portion of the flash device on the ESXi host for use as cache by applications running on the VM.
Deallocating cache space
Occasionally, you may need to deallocate cache space for a virtual machine. You may want to reserve the cache space for another VM or change the cache size on the same VM. You need to disable the VM for caching before you deallocate cache space.
Changing the cache block size
You may be able to optimize performance for your workload by changing the block size of the cache.
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.
Parent Topic:
Managing Flash Accel caching systems
Related tasks
Allocating cache
Deallocating cache space
Changing the cache block size
Reformatting the cache
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