Single point of failure analysis - reducing the risk of outages on business critical service
ITIL suggests three processes that can be used by an user of a data centre to determine reliability. It is not sufficient to look at the physical layer and make a determination as significant number of service are being abstracted and delivered in a virtualization fashion. It cannot be assumed that the configuration of the virtual infrastructure is resilient and neither can it be assumed that all services are being delivered in a generic fashion.
Read the article over at LinkedIn here.