So volume 1 is in use:
Volume Name:    Volume_1
Volume Type:    RAID 1
Sync Time Remaining:    Completed
Total Hard Drive Capacity:    736656 MB
Used Space:    176475 MB
Unused Space:    560181 MB
Volume 2 appears to be empty, but it shows used.  I'd like to reformat it, or use it in some way as it appears to be unusable in it's current state:
Volume Name:    Volume_2
Volume Type:    JBOD
Total Hard Drive Capacity:    1343 MB
Used Space:    176475 MB
Unused Space:    1341 MB
Any ideas how it got this way and how I can just format it and use it, or something - while protecting the integrity of the first volume?
Thanks!