Keeping RAID drives with OS as a backup while setting up SSD as the new primary drive

cheflo

Honorable
Mar 16, 2013
4
0
10,510
I am purchasing a workstation with 4x2TB HDD in RAID 10 as the primary drive with the OS (Windows). I want to replace this setup with a 1TB NVME SSD to speed up reading and writing to disk.

I do not have much experience working with RAID setups, and I wonder if it is possible for me to simply add the SSD to computer as the primary drive (by modifying the BIOS boot order) and install Windows on it, while keeping the RAID setup intact so that if something goes awry during the SSD installation, I could revert back to having the RAID setup as the primary drive and boot Windows just as prior to the addition of the SSD (once I have successfully installed Windows on the SSD, I intend to break the RAID and re-purpose the drives as storage for our other workstations). Is this setup procedure feasible or does adding the new SSD drive somehow break the previous RAID setup so that it is not possible to boot from it any longer? Do I need to physically disconnect the RAID drives when installing Windows on the SSD?
 
Solution
If the RAID is connected to the motherboard, it is a hybrid hardware/software solution, then simply disconnecting the power to the drives will disable the raid, but leave the controller active, it will just scan past no drives detected on boot.
Now add the NVM, change the boot order in the BIOS.
Install W10, install raid drivers as the controller is still active.
Shutdown, add power back to the raid and power up.
RAID should be redetected as configuration is normally held on the drives.
W10 will see the new drives and just add the RAID back as the next available drive letter.

I do this all the time on two RAID controllers in my server box, when erver I do a OS refresh and have never lost data from moving from Server 2008/12/16.

USAFRet

Titan
Moderator
Anytime you install a Windows OS, you really want only the target drive connected.

When you install the OS on the SSD, take the 4 x RAID drives out of the system.
Install on the SSD.
The drive config and data won't be touched.
After, reconnect, and wipe as desired.
 
If the RAID is connected to the motherboard, it is a hybrid hardware/software solution, then simply disconnecting the power to the drives will disable the raid, but leave the controller active, it will just scan past no drives detected on boot.
Now add the NVM, change the boot order in the BIOS.
Install W10, install raid drivers as the controller is still active.
Shutdown, add power back to the raid and power up.
RAID should be redetected as configuration is normally held on the drives.
W10 will see the new drives and just add the RAID back as the next available drive letter.

I do this all the time on two RAID controllers in my server box, when erver I do a OS refresh and have never lost data from moving from Server 2008/12/16.
 
Solution