Impacted services : Power supply of IT chains A and B

We will do the curative maintenance of certain inverters of electrical chains A and B to replace the batteries end of life.
The inverters of these electrical chains supply racks of IT halls.

Operations will be performed by our maintainer under our permanent supervision.

UPS impacted :
ASI A1 - 160 batteries - 12/04/2021
ASI A3 - 160 batteries - 14/04/2021
ASI B3 - 160 batteries - 15/04/2021

This maintenance requires isolating each UPS in order to intervene on the device.
The downtime of an UPS is estimated to take 7 hours.

The operation will be done on one UPS per day and will have no impact on your equipments housed in our Datacenter :
the others UPS of the electrical chain are sized to recover the load from the offline UPS.