Jan Schoonderbeek: start

2012-11-11T23:22:21Z

start

New page

{{Maturity|2}}
{{Pageheaderbox
|pagetype=
|pagename=Scalability level up and out
|doctype=QAdefinition
|version=0.1
|owner=J.A.H. Schoonderbeek
}}

Adaptability [[Scalability::up and out]] has ordinal number [[Scalability ordinal::30]]. It's one-sentence description is:<br>
"[[Scalability description::Capacity can be scaled both upward and outward]]".

When a facility can scale both upward and outward, capacity increase is relatively easy. Capacity decrease is not foreseen, and thus relatively difficult. Examples are:
* a central storage pool in a SAN is often easily expandable either by adding extra cabinets to a node, or by adding nodes to the SAN. Reduction of capacity is hard, mainly because hardware that's this much specialized is not easily returned to the vendor.
* a Local Area Network can often be expanded by upgrading blades in a modular switch (or adding blades to empty slots), as well as by adding more equipment. Again, there usually are no provisions to return hardware to the vendor.

Scalability up and out - Revision history

Jan Schoonderbeek: start