Most SME's usually don't have redundant everything (unlike large enterprises, and IT specific companies) in their environments. They will usually do a cost / be

Most SME's usually don't have redundant everything (unlike large enterprises, and IT specific companies) in their environments. They will usually do a cost / benefit analysis and choose to skimp on certain redundancies (usually somewhat "stateless" stuff like routers, VPN endpoints and other network gear). These companies are always hindered by the downtime incurred when one of these non-redundant devices needs restarting. In a couple of previous positions over the years I would have loved the ability to apply patches with no downtime. There are environments where the time to failover to redundant infrastructure is critical (HVT, particle physics etc.) but the more common use case is probably going to be the companies that have no failover capability for certain parts of their infrastructure.