Dell PowerEdge R820 - Manual (Page 19)

Consolidating Oracle Databases on the Dell PowerEdge R820 Server Using Oracle VM
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Consolidation factor
 8:1 Consolidation at 70% Utilization. Based on the preceding consolidation study, a
PowerEdge R820 populated with 4 sockets can consolidate the workload of 8 Oracle RAC nodes
running on 9th generation PowerEdge 2950 III servers.
 10:1 to 12:1 Consolidation at full Utilization. Based on the preceding consolidation, a
PowerEdge R820 populated with 4 sockets can consolidate the workload of 10 to 12 Oracle RAC
nodes running on 9th generation PowerEdge 2950 III servers given that there are no other
bottlenecks from memory, network, storage etc.
Power Consumption vs Userload Figure 14.
The Dell PowerEdge 12 th generation servers are the most efficient ever in the PowerEdge lineup.
Because of their special design, you will enjoy huge power savings by consolidating from legacy servers
to the PowerEdge R820. As Figure 14 illustrates, there is a dramatic difference in the power
consumption between a PowerEdge R820 and a 2 node legacy 2950 production environment at various
userload levels.
Let’s look at the average power savings that can be achieved:
 Average power consumption by PowerEdge R820 - 265 watts
 Average power consumption by the legacy 2950 environment - 540 watts
 Power savings % = (540-265)*100 / 540 = ~50%
Hence on average 50% power savings can be achieved.
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Userload
Power Consumption vs Userload
Legacy 2950 III
PE R820