so whats an sql server cluster?

[UniqueID]

hi guys apologies first of for my noobishness for not first scouring the internets for hours so i could fully understand it..
but what is an sql server cluster and how best would you use one?
i know a server cluster is using more than one computer to serve one job,
and i guess if you have a lot of demand on sql it would be helpful but i just need to understand more about it, and if anyone knows what its all about.

 

[uv]

you've pretty much answered your own question.

An SQL server cluster is an array that holds an SQL database.