I recently upgraded a working RAID 1 array from two 4TB drives to two 10TB drives using Intel Rapid Storage Technology (Intel RST) by doing a sequential swap:
Replaced the first 4TB drive with a 10TB drive and waited for the rebuild to complete.
Replaced the second 4TB drive with a 10TB drive and let it rebuild completely.
The array status shows healthy and fully synced. As shown in my attached screenshots:h
Intel RST recognizes the physical drives as 10TB drives.
Windows Disk Management (This PC > Manage) only sees the array as a 4TB disk with no unallocated space to extend into.
Since Disk Management doesn’t see any free space on the drive, I can’t use “Extend Volume.”
How do I get Intel RST to expand the virtual volume size so Windows can see the remaining unallocated space? Is there an option inside Intel RST (or the Intel Optane / RAID management app) to grow the array capacity after a drive replacement?
