Editing Scalability (section)

===Vertical or scale up{{anchor|Vertical}}===
Scaling vertically (up/down) means adding resources to (or removing resources from) a single node, typically involving the addition of CPUs, memory or storage to a single computer.<ref name="parallel_arch" />

Benefits to scale-up include avoiding increased management complexity, more sophisticated programming to allocate tasks among resources and handling issues such as throughput, latency, and synchronization across nodes.  Moreover some [[Amdahl's law|applications do not scale horizontally]].