Implementing a Virtual Server Environment: Getting Started
Table Of Contents
- Chapter 1: Introduction
- Chapter 2: Assessing and Planning
- Chapter 3: Understanding the Choices for Virtualization Technologies
- Partitioning Solutions:
- Why choose nPartitions (nPars)?
- Why choose Virtual Partitions (vPars)?
- Why choose Integrity Virtual Machines (VMs)?
- Why choose Resource Partitions or Secure Resource Partitions (SRPs)?
- HP Utility Pricing Solutions:
- Why choose Instant Capacity (iCAP)?
- Why choose Temporary Instant Capacity (TiCAP)?
- Why choose Global Instant Capacity (GiCAP)
- Automation Solutions:
- Why choose Global Workload Manager (gWLM) or Workload Manager (WLM)?
- Chapter 4: HP VSE Reference Architectures
- Chapter 5: Identifying a Pilot Project
- Chapter 6: Making Your Choices
- For more information
Why choose Global Instant Capacity (GiCAP)
Key Benefits
• Allows iCAP resources to be shared across multiple servers (usage rights are deactivated on
one server and activated on another).
• TiCAP resources can also be pooled and shared across multiple servers.
• GiCAP is also integrated with gWLM.
Trade-offs
• Available only on cell-based systems.
Sweet Spots
• Can use iCAP resources for load balancing across servers.
• Can be useful in failover situations. (To flex the resources of the failover server, GiCAP usage
rights can be transferred to the failover server so that TiCAP resources don’t need to be
consumed.).
Automation Solutions:
Why choose Global Workload Manager (gWLM) or Workload
Manager (WLM)?
Key Benefits
• Allows control over how shared resources are allocated between workloads.
• Automates the reallocation of resources between partitions that can share resources.
• Automates and controls the use of utility pricing to manage costs.
• Automates the activation and deactivation of TiCAP resources, ensuring they are active only
when the load requires them (resulting in lower costs).
• Allows application performance to remain at consistent levels as load varies.
• A single gWLM policy can be applied to many servers.
Trade-offs
• Both WLM and gWLM support HP-UX. In addition, gWLM supports Windows, Linux, and
OpenVMS if they are running as a guest OS on an HP Integrity Virtual Machine. Also, gWLM
is HP’s strategic workload management product.
• WLM supports Resource Partitions and Secure Resource Partitions; gWLM does not.
• gWLM may be used with Integrity VMs; WLM does not support Integrity VMs.
• WLM must be configured on each server.
• gWLM can manage multiple servers from a single management server.
• gWLM is integrated with GiCAP, providing automation and control of resources that can be
shared across servers within the same GiCAP group; even if they are in different
geographies.
Sweet Spots
• Automates sharing of processors between vPars.
• Automates flexing of nPars with iCAP processors.
• Minimizes cost of TiCAP solutions, and automatically deactivates TiCAP processors when they
are not required.
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