MSA2324 Make Write Cache unavailable on the CICS controller

[Kevinb_3]

I'm installing Symantec Backup exec  to back up an exchange server. In the best practices, it suggest,

Make Write Cache unavailable on the CICS controller. Data corruption can occur if the computer fails before the operation is written to disk.

Is that something I would change in the miasmas? I currently see on the Volume under provisioning, I can set Write Policy write-back or write-through. Or, under the properties on the disk in windows under Policies it has a write caching policy. That is currently disabled. 

Not sure which one disables Write cache.

Thanks