Does anyone know if the Xbar module (N7K-C7009-FAB-2) can cause any impact?
The replacement will take action during the maintenance window, but better safe than sorry.
Thanks in advance for answers
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The Cisco Nexus 7009 switch has up to five fabric modules located on the front of the chassis. You can replace one of these fabric modules at a time while the switch is in full operation.
Official Cisco Replacement procedure: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/hw/nexus7000/installation/guide/n7k_hig_book/n7k_replacing.html#35412