Set spare goal or Set Rebuild Areas Goal Delete Selecting this option allows you to set the number of spare drives (on TRAID) or rebuild areas  (on DRAID) that are required to protect the array from drive failures.  If the number of rebuild areas available does not meet the configured goal, an error is logged  in the event log, as shown in Figure 6-62. This error can be fixed by replacing failed drives in  the DRAID array.  Note:  This option does not change the internal DRAID configuration. It specifies only the  level at which a warning event is generated. Setting the goal to 0 does not prevent array  from rebuilding to a spare drive. In the CLI, this task is performed with  charray  (see Example 6-26). Selecting  Delete  removes the array from the storage pool and deletes it. An array MDisk does  not exist outside of a storage pool. Therefore, an array cannot be removed from the pool  without being deleted. All drives that belong to the deleted array return into  Candidate . Chapter 6. Storage pools  259 Figure 6-62 An error 1690 is logged if insufficient rebuild areas are available Example 6-26 Adjusting array goals with charray (some columns are not shown) IBM_2145:ITSO-SV1:superuser>lsarray mdisk_id mdisk_name status mdisk_grp_id mdisk_grp_name distributed 0 mdisk0 online 0 mdiskgrp0 no 16 Distributed_array online 1 mdiskgrp1 yes IBM_2145:ITSO-SV1:superuser>charray -sparegoal 2 mdisk0 IBM_2145:ITSO-SV1:superuser>charray -rebuildareasgoal 0 Distributed_array