More efficient high availability and resource utilization through manageability

Technologies built on HP Serviceguard

A typical Serviceguard configuration consists of nodes in a single data centerreferred to as a local

cluster. Creating clusters that are resistant to multiple points of failure or single massive failures

requires a different type of cluster architecture than that used in a local cluster. This architecture is

called a disaster-tolerant architectureoften referred to as a disaster-tolerant solution (DTS). This

architecture provides you with the ability to fail over automatically to another part of the cluster or

manually to a different cluster after certain disasters. Specifically, the disaster-tolerant cluster provides

appropriate failover when an entire data center becomes unavailable. HP has a rich portfolio of

disaster-tolerant cluster offerings, including HP Extended Campus Cluster, HP Metrocluster, and HP

Continentalclusters. While each of these solutions has its own characteristics, their common goal is to

protect users from a site-wide outage. To achieve this, the common feature they all implement is

multiple data centers with multiple copies of the users’ data. Effectively, if one data center fails, a

second data center is available to continue processing.

Integrating the VSE with disaster-tolerant products provides efficiency, lower cost of ownership, and

protection of IT resources, through:

• Increased resource utilization within a data center and across data centers for high availability and

disaster tolerance

• Reduced IT capital costs in deploying high availability and disaster-tolerant solutions

• Automatic management of resources across the infrastructure

What is HP Instant Capacity?

HP Instant Capacity provides the ability to increase processing capacity instantly on specified HP

enterprise servers. With Instant Capacity, you initially purchase a specified number of active and

inactive system components. These licensedbut inactiveInstant Capacity components are available

for instant activation. Instant Capacity increases processing power in a matter of minutes with the

increase of traffic. Instant Capacity can also provide high availability of your system. Upon detection

of CPU failure, a second CPU can be instantly activated.

HP also offers Temporary Instant Capacity (TiCAP), which activates capacity in a temporary “calling

card fashion” in 30 CPU-day increments (a CPU day equals 24 hours for one CPU). With this option,

CPUs can be activated and deactivated. Temporary Instant Capacity usage rights are applied to a

system so you can turn on and off any number of Instant Capacity CPUs on your system. With

Temporary Instant Capacity on the system, any number of Instant Capacity CPUs can be activated as

long as usage rights are available.

What is HP-UX Workload Manager?

HP-UX WLM is an optional HP product (available stand-alone and in the MCOE) that provides

automatic resource allocation and application performance management through the use of

prioritized SLOs.

You assign applications and users to workloads and set up one or more SLOs for each workload.

Based on the priorities you specify and the load and performance of your applications, WLM

automatically allocates CPU resources to the workloads to achieve the desired SLOs, ensuring that the

highest priority applications maintain their performance objectives. Thus, WLM helps you fully achieve

the benefits of consolidation by improving utilization while guaranteeing resources and maintaining

performance goals.

WLM can also manage real memory. Memory management is not in response to SLO performance;

however, WLM can allocate a minimum amount of memory to a Serviceguard package when it fails

over. Similarly, disk bandwidth allocations (guaranteed minimums) are statically assigned in the WLM