Oorspronkelijk geplaatst door
Evoswitch
Dear customer,
Herewith we provide you with a preliminary RFO statement for the power disruption in data hall 2 as occurred early this morning.
At 06:12 hrs the mains power, supplied to Evoswitch by Liander, failed. Immediately all UPSs switched over to battery operation and gave the signal to the generators to start. For data halls 1, 3, 4 and 5 this process went smoothly and according to specification. For data hall 2 this process failed, resulting in a power outage on the no-break power feeds of data hall 2.
The batteries of UPS 2 were empty before the generator was running which put UPS 2 in a state that, due to the high power levels, required a manual intervention to push it back in to no-break operation.
The authorized on-call electric engineer, required to make the intervention, arrived at the data centre on 07:00 hrs. On 07:12 hrs UPS 2 was manually forced to no-break operation after which the power to data hall 2 was restored.
To avoid such events in the future we will initiate the following actions:
1) More frequent battery testing. Currently this is performed once per year and will be done once per half year.
2) The manual trigger required to push the UPS to no-break operation after a battery failure will be taken out and set to automatic.
3) We will replace all batteries of UPS 2 within the next 24 hours.
4) A new maintenance scheme will be developed and deployed for our batteries to minimize the risk of an outage due to battery malfunction.
The full RFO will be posted within the next 24 hours. If you have questions regarding this update please contact your account manager (sales@evoswitch.com) or our support (support@evoswitch.com) staff
We apologize for any inconvenience caused.
