On Adaptec controllers, NOBUILD is what ia known as a hidden feature. These features are accessed by simultaneously pressing Alt+F10, then simultaneouly pressing the character associated with the feature you want to use.
The NOBUILD feature creates an RAID array without actually building or intializing the array. During normal array setup the controller creates a RAID reserve block and builds the array. This process results in a loss of data on the array. The NOBUILD option lets you create an array without building the array. When NOBUILD is active, the controller setup interface assumes that the initial data and parity generation are complete. Subsequently, the interface updates the RAID information area of the drives with bit patterns indicating the array is OPTIMAL, and leaves the data/parity areas unchanged. A+,N+,S+,L+,I+,CFOT,CCNT,ACSP,ISA CCST3