Hi, thanks for choosing Dell.   How do I temporarily take a virtual disk offline without compromising data integrity on a Dell PERC H730p controller?
We have a Dell R740 which has been running Windows Server 2012 R2 for a while and we would like to make a fresh install and upgrade to Windows Server 2019 Standard. The there are 4 disks on the server, one of which runs on JBOD mode and is the one the OS is installed on (disk "C:\"), and the other 3 are are members of a virtual disk set up as a RAID5 array (disk "D:\"). My problem is that I don't want to erase the contents of the second virtual disk by mistake during OS installation so I would like to take it offline temporarily, as can be done on many modern BIOSes. I have made that mistake before and I don't want to go through the pain and suffering again. So my question is: How do I temporarily take a virtual disk offline without compromising data integrity on a Dell PERC H730p controller? I checked the manual but have not been able to find anything about taking disks offline temporarily. Is there a way or will I just have to be extra careful during installation?  
How do I temporarily take a virtual disk offline without compromising data 
integrity on a Dell PERC H730p controller?