Hi bmartin
Any RAID 5 configuration will allow to lose one drive. If you lose more then one you will lose all of the data. In your case if you remove one of the driver you will not lose the data, but if anything happens to any of the other drives the data on that server is going to be gone.
A RAID 5 comprises block-level striping with distributed parity. Unlike in RAID 4, parity information is distributed among the drives. It requires that all drives but one be present to operate. Upon failure of a single drive, subsequent reads can be calculated from the distributed parity such that no data is lost. RAID 5 requires at least three disks.
http://www.cyberciti.biz/faq/what-happens-when-hard-disk-fails-in-raid-5/
Please let me know if this helps.
