not a typo; when you design for the typical x86 cluster it's a cluster - you expect components to die and you can throw away whole machines (i.e. expect failur

not a typo; when you design for the typical x86 cluster it's a cluster - you expect components to die and you can throw away whole machines (i.e. expect failure). mainframes on the other hand keep chugging along no matter what. the usual comparison is a cluster of cheap nodes vs a mainframe