09-Feb-2010 - Scheduled UPS Maintenance - UPS-A

[porcupine]

Hi Guys,

Please be advised of the following maintenance window(s). We have scheduled several related maintenance activities within this common window for everyones convenience:

Maintenance Window: Tuesday February 9th 2010, 9:00am - 1:00pm EST
Affected Device: UPS-A
Affected Customers: Dedicated Server customers & Colocation Customers with branch circuits not specifically sourced from our UPS-B plant
Service Impacting: No - This is a precautionary maintenance window. We do not expect to see any loss of power, or other interruptions to customer services during the maintenance window in question.
Details: UPS service contractors will be performing the annual preventative maintenance on the UPS unit, and its batteries. While we do not expect this to be a service impacting maintenance, the UPS unit will be operating on battery bypass, and should utility power fail at this time, there will be an interruption in services as the Automatic Transfer Switch (ATS) switches power from utility to generator. As such, this should be considered a precautionary maintenance window. We expect to be on battery bypass for approximately 1-2 hours of this maintenance window, allowing technicians sufficient time to perform any/all tests they need to run.

Maintenance Window: Tuesday February 9th 2010, 7:30am - 1:00pm EST
Affected Device: core01.tor1, core02.tor1, dist01.tor1, dist02.tor1
Affected Customers: All dedicated server, and colocation/transit customers.
Service Impacting: No
Details: We will be upgrading our power distribution to our network core from 120v to 208v, allowing for higher power density, and migrating some of the power supply sources from UPS-A to our newly installed UPS-B, providing complete power/UPS diversity to the network core. All of the current power supplies currently support 208V input, and this will be a simple power cable swap. Since every network device has redundant power supplies, there should be no discernible impact to any customer services, and obviously we will be performing this operation one device/power supply at a time.

Maintenance Window: Tuesday February 9th 2010, 12:00pm - 5:00pm EST
Affected Device: APC's starting with APC-B1 through APC-B5
Affected Customers: Customers on APC's starting with APC-B1 through APC-B5
Service Impacting: No
Details: We will be migrating approximately 50% of the named APC Masterswitches powering the Colocated Servers from our UPS-A power plant, to our newly installed UPS-B power plant, in an effort to improve efficiency, reduce UPS-A's load, and extend customer distribution, run-time, and redundancy in general. We have developed a proprietary set of tools and techniques, which have been previously tried, tested, and which allow for Priority Colo's staff to migrate power distribution units between branch circuits in a safe and consistent manner, without interrupting any of the connected equipment. Upon completion of this maintenance period, we expect the APC Masterswitch units, and thus their load to be evenly spread across the two UPS's, giving customers with multiple servers, some additional diversity. This will be an identical procedure to the maintenance performed for our Dedicated Servers on 07-Dec-2009 ( viewtopic.php?f=5&t=680 ), which completed seamlessly and on-schedule.


Regards,

[porcupine]

Hi guys,

This maintenance period is now closed. The UPS maintenance has been completed, the network core has been moved from 120v plugs to 208v plugs, and the APC's in question have been migrated to our UPS-B power plant. No further maintenance activities are scheduled for today, and no issues are currently outstanding.