On Saturday, March 3rd we will be performing various maintenance tasks on our hardware. While we cannot provide an exact time schedule for these I wanted to go ahead and post a notification concerning them along with estimated downtime.
Power Maintenance
A redundant power drop has been installed in our cabinet. We will be re-cabling all power connectivity to accommodate this. Approximately 5-10 minutes of network downtime will occur while single corded switches are powered down, plugged in to a new automatic transfer switch, and powered back on. Individual hosting servers are dual corded so these will not need to be powered off. After this maintenance all of our hardware will be powered by two entirely separate power sources on different grids, UPSs, and generators.
Kernel Upgrades
Kernel upgrades will be performed on cpanel75, cpanel77, and cpanel78. This will require a reboot with approximately 5-10 minutes of downtime for each server.
cpanel75 RAM Maintenance
After a recent reboot only 40GB of RAM is being detected in this server instead of 48GB. We will have to take the server offline to make sure all RAM is properly seated. If this does not resolve the issue we will identify the failed 8GB module and remove it temporarily while we await a matched replacement. This could result in anywhere between 15 and 60 minutes of downtime depending on what we find.
cpanel75 RAID Maintenance
One of this server's RAID 10 disks has begun showing a couple of errors. This isn't anything to be worried about since we do run RAID 10 and have hot spares installed in all of our servers. We'll simply be hot swapping the drive with a new one. No downtime is expected.
Power Maintenance
A redundant power drop has been installed in our cabinet. We will be re-cabling all power connectivity to accommodate this. Approximately 5-10 minutes of network downtime will occur while single corded switches are powered down, plugged in to a new automatic transfer switch, and powered back on. Individual hosting servers are dual corded so these will not need to be powered off. After this maintenance all of our hardware will be powered by two entirely separate power sources on different grids, UPSs, and generators.
Kernel Upgrades
Kernel upgrades will be performed on cpanel75, cpanel77, and cpanel78. This will require a reboot with approximately 5-10 minutes of downtime for each server.
cpanel75 RAM Maintenance
After a recent reboot only 40GB of RAM is being detected in this server instead of 48GB. We will have to take the server offline to make sure all RAM is properly seated. If this does not resolve the issue we will identify the failed 8GB module and remove it temporarily while we await a matched replacement. This could result in anywhere between 15 and 60 minutes of downtime depending on what we find.
cpanel75 RAID Maintenance
One of this server's RAID 10 disks has begun showing a couple of errors. This isn't anything to be worried about since we do run RAID 10 and have hot spares installed in all of our servers. We'll simply be hot swapping the drive with a new one. No downtime is expected.
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