We will be doing RAID maintenance at 11PM tonight on the node for MySQL2 and MySQL3 servers, we are hoping there is no downtime or delays caused by the maintenance but there is some risk and a chance of issue as we are seeing some bad sector errors on the RAID array that services these severs. We've taken full backups and images of the servers and should there be a problem we will be able to restore them quickly. We are waiting until the backups are completed tonight before we do the maintenance on the RAID.