Consolidating multiple SQL Server systems onto
Dell PowerEdge R610 Servers using Microsoft’s Hyper-V
5
are the other significant cost savings that fewer servers mean over
time, such as fewer hardware replacement purchases as these
consolidated servers age out. In other words, your future purchase
growth rate may decrease. Other potential hardware cost savings
areas include racks and network switches; as the number of
servers decreases, these costs decrease as well.
Software license savings. Like traditional consolidation, Hyper-V
virtualization technology allows your organization to reap
significant software licensing savings. While licensing structures
and fees vary by product, the following example illustrates the
possibilities.
Windows Server 2008 Enterprise Edition limits the number of guest
OS instances to four, so this pricing example uses Windows Server
2008 Datacenter Edition (which allows unlimited guest OS
instances) and the per-processor licensing model of SQL Server
2008. Details on licensing Windows Server 2008 are available for
download here, and details on licensing SQL Server 2008 are
available for download here
.
• NOTE: Each version of SQL Server has its own licensing
specifications, so you should consult with your Microsoft
sales representative on the specifics of licensing SQL Server
in a virtual environment. This example uses SQL Server
2008 to show cost savings.
Our PowerEdge R610 has two physical hyper-threaded quad-core
processor sockets. Licensing Windows Server 2008 Datacenter
Edition with SQL Server 2008 Enterprise Edition lets us create an
unlimited number of virtual environments, all running SQL Server
2008. Figure 1 shows a possible configuration.
Figure 1. Sample configuration of 10 virtual machines running on
the Dell PowerEdge R610, each with two virtual processors.
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