Just for reference, I am planning some scheduled maintainence to correct data errors on one of the hard drives in the RAID array. If all goes well it will only involve minimal downtime (reboots) in order to remove the offending drive from the array for diagnostics, followed by another reboot to reattach it if it checks out. Probably will not begin until Friday or Saturday, I need to make absolutely certain that all probable scenarios for this repair are covered in some way with minimal loss and consult the datacenter for recommended approach to this issue as far as actually restoring full capability on the offending drive is concerned.
Though if I can't repair the drive through software I will have to schedule an outage for a replacement drive to be installed. No data will be lost though, I will be making a full backup to another server before making any changes to the current setup. Just in case, even though with a raid array it's not terribly difficult since for the most part it is automated.
How bad could the scheduled outage get? Most of a day?