After some routine checks, and reported issues on the systems in question, we have been made aware of some failing hard drives in node 1 and node 5 Canada.
Within the next couple of hours, we will be having the NOC technicians replace these drives. This may mean up to 30 minutes of downtime per system.
Just to note, because we use a RAID1 setup in all of our systems, no data has been lost, and we do not anticipate any data loss on the systems in question.
Thank you for your continued support and patience.
Update: Unfortunately, our datacenter in Canada was unable to comply with our request in a timely manner, which resulted in a couple of hours of downtime without the replacement. We will be rescheduling this period to have the drives replaced.