This task will be used to coordinate a time between @Gehel and @Cmjohnson to add the new disks to wdqs100[45], purchased on T198658.
Adding the disks (not replacing existing) shouldn't result in any downtime, but we should watch it carefully just to be certain. Then @Gehel will need to take over on manually extending the software raid/lvm onto the new disks to use the space.