Oracle has produced a true SPARC Engineered System that integrates Solaris on SPARC, Exadata and Exalogic. And this new system is the Oracle SPARC Supercluster, which is built on the new T4 chip and its new architecture, which has resulted in the SPARC T4-4 Server as the the top of the line 5RU model. SPARC Supercluster also includes the integration of Infiniband and the flexibility of Logical Domains (LDoms) as well as a ZFS Storage Appliance to support the Exalogic clustering storage needs, plus Exadata Cells.]
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The blog post "Deploying Oracle RAC DB 11gR2 on LDoms Virtualization" is a "cookbook" approach to configuring and installing Oracle Real Application Cluster (RAC) Database 11.2.0.2 on Solaris 10 and Logical Domains on Sun CMT servers (also using ZFS). He concludes that LDom is a good choice for RAC deployment for, among other reasons, it is a virtualized hosted environment; it permits easy reallocation/deallocation of system resources dynamically; it allows for optimized system utilization and space/utility consumption.
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In his blog post "Secure administration of Oracle VM Server for SPARC (Logical Domains)" Jeff Savit describes how to use RBAC to secure an Oracle VM Server for SPARC system by eliminating use of the root userid and restricting power to specific users and roles when they need them. That step, along with restricting which userids can log into a control domain in the first place, should be considered for any domain environment, he contends.
Other tasks one may wish to consider include using RBAC to control access to guest domains consoles and to enable security auditing, he adds. OVMSS Security, Savit writes, provides the necessary separation of function that is especially critical in a virtual machine environment. He concludes that reference information for the tasks in his blog can be found in Chapter 3 of the Oracle VM Server Administration Guide.
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With the release of Oracle VM Server SPARC 2.1 (OVMSS) users can now enjoy several new and important features that amount to useful enhancements of this solution. These features are:
Live Domain Migration
CPU Dynamic Resource Management
DTrace enablement
Improved allocation and deallocation of CPUs and crypto units
Bug fixes and performance improvements are included in the release as well. A blog devoted to the live migration feature in this release will soon be available. OVMSS was once referred to as Logical Domains (or LDoms) but, whether by that name or by OVMSS, this solution is a virtual machine capability built into Oracle's T-series SPARC Chip Multithreading (CMT) servers, permitting up to 128 domains (virtual machines) on a single server at no extra cost. That last phrase is worth repeating: " ... at no extra cost."
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The Oracle white paper "Oracle VM Server for SPARC Enabling a Flexible, Efficient IT Infrastructure" highlights the advantages of using server virtualization to capture business value through an efficient, nimble IT architecture built on Oracle VM Server for SPARC (previously called Sun Logical Domains). Readers will find guidance on how to avoid the costly, inefficient practice of deploying a single application per server as a strategy to keep pace with business growth that, in fact, hinders the pace of that hoped-for growth and leads as well to excessive costs involving power, cooling, and real estate.
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