Consolidating legacy Oracle databases on to Dell PowerEdge R820 Server Using Oracle VM

“Consolidation” is a favorite buzzword in IT circles these days.  But what does it really mean?  Consolidation can be defined as maximizing the efficiency of hardware resources, thereby minimizing the infrastructure and associated power and cooling, rack footprint and licensing costs of applications and operating systems. Consolidation essentially solves the fundamental problem of server sprawl, where multiple, underutilized servers take up more space and power resources than the actual workload really requires.

With the wider adoption of virtualization technology for main stream databases, customers can effectively couple consolidation AND virtualization benefits to achieve even more TCO reduction.

At Dell, we continue to simplify database infrastructure through both virtualization and consolidation to reduce data center complexity without any compromise to the business needs.

The latest generation of Dell PowerEdge servers is well suited for database consolidation due to higher performance CPUs, increased memory density, and more available network resources. By then coupling Oracle’s virtualization technology with Dell PowerEdge servers, we can deliver benefits far beyond simple physical server consolidation.

Dell Enterprise Solutions Group recently released a white paper and reference architecture to showcase how the PowerEdge R820 server can consolidate and virtualize up to 12 legacy physical database servers, significantly reducing datacenter footprint and achieving up to 50% power and cooling savings. By leveraging this increased horsepower and greater efficiency per “square foot”, IT customers can easily reduce the impact to their datacenter operating environment, while simultaneously improving Oracle database service to their users.

Storage infrastructure is equally important during consolidation, and Dell Compellent SC8000 storage provides an intelligent, feature rich storage solution with added benefits. Dell Compellent storage is based on innovative Fluid Data architecture that dynamically moves data based on access patterns, automatically adapting to usage scenarios. Its virtual storage helps to meet both performance and capacity requirements through automated intelligent data placement. Along with intelligent block architecture Dell Compellent has several others features which help to cut down the Total Cost of Ownership and improve Return on Investment.

Consolidation and virtualization do not in any way compromise database performance when paired with PowerEdge R820 servers. Instead, the result is less cluster overhead, simplified management, and positive movement toward an objective of simplifying IT and reducing complexity in data centers. This database and platform modernization gives customers greater Oracle licensing control and operational efficiencies for the entire IT organization.

To find out more, please download and read this white paper that explains how to:

  • Consolidate/virtualize multiple Oracle databases on a single PowerEdge R820 server
  • Achieve the benefits of consolidation and virtualization.
  • Modernize Oracle 9i or 10g RAC environments on legacy servers and storage
  • Implement disaster recovery sites and additional RAC test bed sites for application development and testing.

Key findings include:

  • 8:1 to 12:1 consolidation possibility  (based on server utilization % targeted)
  • At least 50% power consumption savings based on how much consolidation takes place (50% average savings when replacing 2 x PE2950s w/1 x R820 – should be significantly higher as consolidation increases
  • Potential licensing reductions from server consolidation – up to a 50% reduction in licensing costs depending on consolidation levels.


1. Dell PowerEdge R820

2. Dell Compellent

3. Dell Oracle tested and validated configurations

4. Oracle VM Collateral :

About the Author: Satheesh Iyer