224 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
16       Distributed_array 8         15                    1 
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IBM_Storwize:ITSOV7K:superuser>lsdrive
id status error_sequence_number use       tech_type       capacity mdisk_id 
16 online                       member    tier_enterprise 558.4GB 16
17 online                       spare     tier_enterprise 558.4GB   
18 online                       member    tier_enterprise 558.4GB 16
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IBM_Storwize:ITSOV7K:superuser>charraymember -immediate -member 7 -newdrive 17 
Distributed_array
IBM_Storwize:ITSOV7K:superuser>
Set spare goal or Set Rebuild Areas Goal
Select this option 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 6-44. This error can be fixed by replacing failed drives in 
the DRAID array. 
Figure 6-44   If there are insufficient rebuild areas available, an error 1690 is logged
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.