The cache mode determines how storage reads and writes are serviced from cache. You can use Write Thru mode for read and write caching, Write Around mode for read caching only, and Pass Thru mode when you want to keep the cache "warm" without performing caching. You set the cache mode on both the disk and the virtual machine on which the disk is configured.
The cache mode determines how storage reads and writes are serviced from cache. You set the cache mode on both the disk and the virtual machine on which the disk is configured.