<div>
<div class="content wysiwyg-content">
In regular (2008 SQL Cluster) MS SQL Cluster, as an example we had 3 nodes, but two instances on two nodes separately, and third node was empty (no instances) and ready to take a failed instance, as needed. (the nodes did not need a distinct SQL instance)<br />
<br />
but in the new Always on featured 2012 version, it seems like you need an instance on all 3 nodes, other than the cluster instance. (so 4 sql instances instead of one, previously)<br />
<br />
Does that not imply 3 times the resource?
</div>
</div>


In regular (2008 SQL Cluster) MS SQL Cluster, as an example we had 3 nodes, but two instances on two nodes separately, and third node was empty (no instances) and ready to take a failed instance, as needed. (the nodes did not need a distinct SQL instance)

but in the new Always on featured 2012 version, it seems like you need an instance on all 3 nodes, other than the cluster instance. (so 4 sql instances instead of one, previously)

Does that not imply 3 times the resource?

2012 sql cluster(alwayson) needs more sql instances ?

Microsoft SQL Server 2008 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. Major improvements include the  Always On technologies and support for unstructured data types.