Page 116 - How Cloud Computing Is Transforming Business and Why You Cant Afford to Be Left Behind

MANA GEMENT STRATEGIES F O R THE CL OUD R EV OL UTION

confident of Eucalyptus’s ability to maintain ongoing com-
patibility with EC2.
In September 2009, Eucalyptus Systems provided what’s
likely to be another widely used building block of the private
cloud. Eucalyptus Enterprise Edition can provide APIs for
cloud services being built in VMware virtualized environments,

the type most frequently found in private enterprises. In the
past, there was a wall between VMware’s virtual machines and
EC2’s AMI format, since the two formats did not build virtual
machines in the same way with the same functions and were
incompatible. The Enterprise Edition software, however, in-
vokes a converter that changes VMware’s virtual machine into
an AMI recognized by EC2. Therefore, a workload in the

VMware private cloud can now migrate across the boundary
that used to separate it from the Amazon cloud. This opens
up another path for coordination between public and private
clouds. Eucalyptus Enterprise Edition is a commercial prod-
uct rather than open source code, with a charge for each
processor on which it runs.
At this point, Eucalyptus has stopped short of trying to cre-
ate look-alike APIs for some of Amazon’s more advanced serv-
ices, such as the SimpleDB database service, Amazon Elastic

MapReduce, or Amazon Relational Database Service. Never-
theless, Eucalyptus has broken down several barriers to con-
structing the private cloud. Its core Eucalyptus APIs are in the
public arena as open source code and are likely to be invoked
by more companies seeking to create a private cloud that
aligns with a public one.

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