Since RAID ADG can withstand the failure of 2 HDD's and still process data at a reduced capacity, you should be safe if you lost 1 disk during a re-build. If you lost 2 disks during the process, then you would lose everything. (Unless of course the second disk was the disk that was rebuilding).
Of course, if you are re-building from a 2 disk failure, then losing 1 disk during the rebuild might be catastrophic as well.
Steven
Steven Clementi HP Master ASE, Storage and Clustering MCSE (NT 4.0, W2K, W2K3) VCP (ESX2, Vi3, vSphere4, vSphere5) RHCE NPP3 (Nutanix Platform Professional)
