LDoms is built into every CoolThreads system, so you do not need to purchase it separately. With the LDoms partitioning technology you can:

• Create virtual machines each with their own sub-set of resources
• Protect & Isolate using hardware + firmware combination

Logical Domains Manager

• One manager per machine controls hypervisor and all its ldoms
• Exposes CLI to administrator
• Maps Logical Domains to physical resources

• Each domain is a full virtual machine with a reconfigurable subset of machine resources and its own independent OS
• Protection and isolation via SPARC hardware and LDoms Hypervisor firmware
• Each virtual machine appears as independent machine
• Own kernel, patches, tuning parameters
• Own user accounts, administrators
• Own disks
• Own network interfaces, MAC & IP addresses
• Start, stop and reboot independently
• Service domains for I/O

Download
You can find all the relevant software on the download page, and it is free.

Get the latest LDoms software

Other Resources

• Logical Domains (LDoms) - sun.com
• LDoms Documentation
• OpenSolaris Community: Logical Domains
• LDoms Forum
• Cool Tools at OpenSPARC T1
• Oracle Virtualization Solutions - Consolidation and Virtualization
• Sparks and White Noise (Blog)
• Logical Domains: Create 64 With New UltraSPARC T2 Processor (Blog)
  This weblog has a Flash demo that shows how many logical domains can be created with the UltraSPARC T2 processor.
• Oracle 10g Single Instance Certification on LDoms
• Oracle 10g RAC Certification on LDoms
• Oracle Virtualization Blog

Sun BluePrints (login required)

• Beginner's Guide to LDoms
• Solaris Operating System Hardware Virtualization Product Architecture
• Using Logical Domains and CoolThreads Technology: Improving Scalability and System Utilization
• LDoms IO Best Practices - Data Reliability With Logical Domains
• LDoms IO Best Practices - Network Availability with Logical Domains
• Consolidating Oracle Siebel CRM 8 on a Single Sun SPARC Enterprise Server
• Deploying Sugar CRM Software on Logical Domains for Increased Scalablity
• Using Sun Systems to Build a Virtual and Dynamic Infrastructure

White Papers

• Maximizing IT Uptime Utilizing Dependable Sun SPARC Enterprise T5140, T5240, and T5440 Servers (registration required)
• Sun Reference Architecture for Oracle 11g Grid (pdf, October 2008)

Other Resources on BigAdmin

• Virtualization Collection (Submitted by Community and Sun)
• Virtualization Resources for System Administrators