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doc/arch-design/generalpurpose/section_tech_considerations_general_purpose.xml
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more than one compute resource pool. Each independent resource more than one compute resource pool. Each independent resource
pool should be designed to provide service for specific pool should be designed to provide service for specific
flavors of instances or groupings of flavors. For the purpose flavors of instances or groupings of flavors. For the purpose
of this book, "instance" refers to a virtual machines and the of this book, "instance" refers to a virtual machine and the
operating system running on the virtual machine. Designing operating system running on the virtual machine. Designing
multiple resource pools helps to ensure that, as instances are multiple resource pools helps to ensure that, as instances are
scheduled onto compute hypervisors, each independent node's scheduled onto compute hypervisors, each independent node's
@ -92,7 +92,7 @@
in the cloud.</para> in the cloud.</para>
<para>In addition to the impact on actual compute services, it is <para>In addition to the impact on actual compute services, it is
also important to consider the compute requirements of also important to consider the compute requirements of
resource nodes within the cloud. Resource nodes refers to resource nodes within the cloud. Resource nodes refer to
non-hypervisor nodes providing controller, object storage, non-hypervisor nodes providing controller, object storage,
block storage, or networking services in the cloud. The number block storage, or networking services in the cloud. The number
of processor cores and threads has a direct correlation to the of processor cores and threads has a direct correlation to the
@ -128,7 +128,7 @@
protect sensitive data and also protects against unauthorized protect sensitive data and also protects against unauthorized
access to services.</para> access to services.</para>
<para>Based on the requirements of instances being serviced in the <para>Based on the requirements of instances being serviced in the
cloud, the next design choice which will affect your design is cloud, the next design choice, which will affect your design is
the choice of network service which will be used to service the choice of network service which will be used to service
instances in the cloud. The choice between legacy networking (nova-network), as a instances in the cloud. The choice between legacy networking (nova-network), as a
part of OpenStack Compute, and OpenStack Networking part of OpenStack Compute, and OpenStack Networking
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usage increases.</para></section> usage increases.</para></section>
<section xml:id="storage-performance-tech-considerations"> <section xml:id="storage-performance-tech-considerations">
<title>Storage performance</title> <title>Storage performance</title>
<para>When considering performance of OpenStack Block Storage, <para>When considering the performance of OpenStack Block Storage,
hardware and architecture choice is important. Block Storage hardware and architecture choices are important. Block Storage
can use enterprise back-end systems such as NetApp or EMC, use can use enterprise back-end systems such as NetApp or EMC, use
scale out storage such as GlusterFS and Ceph, or simply use scale out storage such as GlusterFS and Ceph, or simply use
the capabilities of directly attached storage in the nodes the capabilities of directly attached storage in the nodes
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the API services behind hardware that performs SSL termination the API services behind hardware that performs SSL termination
is strongly recommended.</para> is strongly recommended.</para>
<para> <para>
For more information OpenStack Security, see the <link For more information on OpenStack Security, see the <link
xlink:href="http://docs.openstack.org/security-guide/"><citetitle>OpenStack xlink:href="http://docs.openstack.org/security-guide/"><citetitle>OpenStack
Security Guide</citetitle></link> Security Guide</citetitle></link>
</para> </para>