This action is not supported on HostRAID controllers.
Use this action to change the write-cache mode setting of a logical device to write through or write back. The write-cache mode determines if the controller writes data to the drive before or after sending a confirmation to the operating system.
Note: (RAID level-x0 only) All logical devices in
a spanned pool must be either write back or write through. That is, the
write-cache mode settings for the logical devices in the spanned pool
cannot be a mixture of write back and write through.
x-0325-ASM-00-08-EN