هذه تشمل التمديدات الكهربائية وتمديدات الشبكة والمفاتيح والقوابس وغيرها

"To configure high availability power, you need two rack PDUs – the primary and the secondary. The primary PDU is fed by the primary UPS and the secondary PDU is fed by the secondary UPS. Each UPS should be backed up by their own generators."
"The primary power supply should be cabled back to the primary rack PDU. The secondary power supply should be cabled back to the secondary rack PDU."
"The primary NIC should be cabled to the primary switch and the secondary NIC should be cabled to the secondary switch."
https://www.otava.com/blog/ensuring-uptime-for-michigan-busi...