I understand the concept of adding a disk to an aggregate but i'd like to add 8 in one go.
Below is the current aggregate raid groups. rg5 only has 17 disks, and as the aggregate is running low on space, i would like to add another 8 600gb disks. This would bring the raid group up to the same level as the others. There are more than enough spare disks in the system.
Would the command be
aggr add NET01B_FC600_AGGR4 rg5 8@600G
Also i have read i need to perform run a full reallocation job on each FlexVol volume contained in that aggregate?
The jury is still out on the reallocate - we've added disks to an aggregate before and gotten mixed responses on whether the resulting "hot spindles" would hurt our performance terribly vs. not worrying about it - let the new writes all go there and then WAFL will figure it all out in the long run. If write latency is already an issue for you then maybe a reallocate is in order...
One quick correction to your command:
aggr add NET01B_FC600_AGGR4 -g rg5 8@600G
(just adding the -g to the command in front of the raid group)