In particular scenario, write cache disk letter need to be other letter rather than 'D'. This article descirbes how to implement this request.

Instructions

1. New maintenance version on vDisk
2. Modify one target device to maintenance mode, and boot from this vDisk maintenance version
3. Change write cache disk letter via Windows disk management, then shutdown this target device
4. Promote vDisk maintenance version to production version
5. Reboot other target devices from production version.