I have a Dell PowerEdge R710 with a PERC H700 SAS Raid Controller. I have serveral volumes configured on this array and need to disable Write-caching within the Operating System (Server 2000R2) as this server is contantly writing important data to disk and needs to be in a consistent state if power is lost to the host. However when I try and change the Write-caching policy within Windows Disk Management I get a message stating "Windows could not change the write-caching setting for the device. Your device may not support this feature or changing the setting" I have attached the screenshots of the error and where I am trying to disable it.
I have Server 2008R2 installed on a PE 2950 with a perc/5i and it allows me to disable write cache in Windows and also keep write cache enabled on the raid controller, therefore we cannot see it being an OS limitation.
Does anyone know how disable write-caching within the OS without getting an error?