http://www-941.ibm.com/collabora ... /virtualization/VIO
Advanced POWER Virtualisation
Advanced POWER Virtualisation, available on all IBM System p and System p5 systems, eServer® p5 servers, as well as the BladeCenter JS21 and JS22, is a combination of hardware enablement and value-added software. With the introduction of POWER6, Advanced POWER Virtualisation has unleashed a number of new features designed for continuous application availability across your enterprise.
Live Partition Mobility
Live Partition Mobility will allow clients to move a running partition from one physical System p POWER6 server to another System p POWER6 server without application downtime, helping clients to avoid application interruption for planned system maintenance, provisioning, and workload management. Live Partition Mobility is licensed via Advanced POWER Virtualisation Enterprise Edition.
Shared Dedicated Capacity
A new feature for POWER6, Shared Dedicated Capacity allows for the "donation" of spare CPU cycles for dedicated processor partitions to be utilised by the shared pool. The dedicated partition maintains absolute priority for dedicated CPU cycles. Enabling this feature may help to increase system utilisation, without compromising the computing power of workloads in a dedicated processor.
Multiple Shared Processor Pools
This POWER6 feature allows for automatic non-disruptive balancing of processing power between partitions assigned to the shared pools - resulting in increased throughput and the potential to reduce processor-based software licensing costs - and Shared Dedicated Capacity, which helps optimise use of processor cycles.
Virtual I/O Server
The Virtual I/O Server is a special-purpose partition, called the Hosting Partition, that provides virtual I/O resources to client partitions. The Virtual I/O Server owns the resources that are shared with clients. A physical adapter assigned to a partition can be shared by one or more other partitions, enabling administrators to minimise the number of physical adapters they require for individual clients. The Virtual I/O Server is thus designed to reduce costs by eliminating the need for dedicated network adapters, disk adapters and disk drives. Unlike other virtualisation techniques, Advanced POWER Virtualisation does not require all devices to be virtualised. Devices can be a mixture of dedicated devices assigned to partitions for maximum performance, or used in the Virtual I/O Hosting Partition to be shared by multiple partitions to provide higher efficiency of resources and adapters.
Integrated Virtualisation Manager
The Integrated Virtualisation Manager (IVM) literally allows you to point, click and consolidate workloads with its easy to use browser-based interface. The IVM lowers the cost of entry into POWER6 and POWER5™ virtualisation since it does not require the use of a hardware management console for single system partitioning. With IVM, you can partition a single system, including the creation of LPARs, and management of virtual storage and virtual Ethernet. Best of all, IVM is included at no additional charge with the optional purchase of Advanced POWER Virtualisation on most IBM System p6, IBM System p5 or IBM eServer p5 entry to mid-range models as well as the BladeCenter JS21. It is packaged as part of the Virtual I/O Server.
Partition Load Manager
The Partition Load Manager (PLM) provides automated processor and memory distribution between dynamic LPARs and micro-partition-capable LPARs running the AIX operating system on systems based on the POWER5 processor. PLM is not available for use with systems based on POWER6 processors. The PLM application is based on a client/server model for the sharing of system information, such as processor or memory events, across concurrent present LPARs.
Micro-Partitioning technology and shared processor LPARs
Shared processor logical partitioning (LPAR) allows clients to "slice up" a machine into virtual partitions, and provides the flexibility to dynamically change the allocation of system resources for those environments. The Micro-Partitioning feature on System p5 servers provides the capability to create multiple virtual partitions within a processor-to a granularity of 1/10th of a CPU. Any of the virtual servers may run on any of the physical processors, meaning that the processor resources are fully shared, making it possible to run the physical server at very high utilisation levels.
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本帖最后由 小猪 于 2008-4-27 10:03 编辑 ]
