SAP on HP-UX Best Practices - Part 3

Link back to: SAP on HP-UX Best Practices - Contents

Last update: 14th April 2011 

Consolidation

HP-UX systems and HP Converged Infrastructure offer a wide variety of technologies, tools and services to provide effective and efficient Solutions for consolidating SAP systems. Below is an overview of the HP-UX technologies which are of particular relevance for SAP Systems consolidation, including references to relevant White Papers, SAP Notes and Web Links proving more detailed information on each topic. 

  • SAP Configuration Considerations When Consolidating

          See SAP Note 1457063 for details on consolidating SAP Systems with HP-UX. 

          See SAP Note 1154448 for details of known network port conflicts between HP-UX and SAP instances, including

   which instance numbers should not be used.

  • SAP Consolidation Approaches

          There are two main approaches to consolidating SAP Systems: 

Application Stacking (multiple SAP Systems per OS image)

  • Supported by HP dynamic workload management tools if dynamic adjustment of resource allocation between SAP systems is required. 
  • Supported by HP PRM (Process Resource Manager) to allocate defined resources per SAP System. 
  • Supported by HP SRP if security isolation is required between SAP Systems. 
  • Pros: Fewer OS instances to manage. 
  • Pros: No virtualization "overhead" 
  • Pros: Very efficient and flexible use of hardware resources 
  • Cons: Single OS Patch level muss address requirements of all hosted SAP systems 
  • Cons: OS Reboot affects all SAP systems hosted on OS

OS Virtualization (e.g. one SAP system per OS image)

  • Supported by HP Virtualization Technologies 
    • HP nPar provides OS Images based on Partitioning per cell/Blade (Intel Tukwila onwards) with dedicated I/O and no virtualization overhead 
    • HP vPar provides OS Images based on Partitioning per Processor Core with dedicated I/O and extremely low virtualization overhead. 
    • HPVM provides OS Images based on virtual machines with sub-core partitioning and shared I/O
  • Supported by HP Dynamic resources management (e.g. TiCAP, gWLM) to adjust hardware configuration online to match workload. 
  • Pros: OS Patch level can be customized for individual SAP systems 
  • Pros: OS Reboot affects only local SAP system 
  • Cons: Multiple OS instances to manage and patch

HP Converged Infrastructure

HP-UX Systems are part of the "HP Converged Infrastructure" ( http://www.hp.com/go/convergedinfrastructure ), which is an IT architecture providing combined virtualized compute, storage and networks with facilities into a single optimized shared-services environment.

See the following Links and White Papers for more information on HP Converged Infrastructure and how this can benefit SAP environments: 

HP-UX Servers

  •   HP-UX runs on the "HP Integrity" Servers using the Intel Itanium/IA64 Processor. 

In order to better integrate into the HP Converged Infrastructure, the majority of HP Integrity are available in "blade" form of servers.

For general (non SAP specific) information on HP Integrity/Itanium servers see:

For information on HP-UX/HP Integrity Servers in an SAP context see:

HP-UX Virtualization Technologies

Under the name "HP Virtual Server Environment" (VSE), HP-UX systems offer a wide variety of virtualization technologies.

For an overview of HP VSE virtualization technologies see:

Support of HP VSE virtualization technologies:

  • Supported Virtualization and Partitioning Technologies for Oracle Database, see Oracle Metalink Document ID 1173831.1. See SAP Note 758563 for Oracle Metalink access. 
  • SAP Note 901732 "SAP on HP Integrity Virtual Machines (HPVM)" 
  • SAP Note 1351051 "Support of Oracle for HP-UX Itanium Integrity VM" 
  • SAP Note 1142243 "MaxDB release for virtual systems"

nPar (Partitioning per cell/blade)

"Hard partitions (nPars) offer electrical isolation and cell board granularity, allowing you to service one partition while others are online. With HP-UX 11i v3, those hard partitions actually become Dynamic nPartitions, with the ability to dynamically add or remove a cell, without requiring system reboots for the nPars involved."

vPar (Partitioning per Processor core)

"Virtual partitions (vPars) are separate operating system instances on the same nPartition or server, with O/S, application and resource isolation. HP-UX 11i Virtual Partitions enable you to dynamically move CPU power or memory between vPars as your workload requirements change. vPars also offers single processor core granularity."

HPVM (Integrity Virtual Machines)

"Integrity Virtual machines have their own separate 'guest' operating system instances, on the same nPartition or server, with different OSs, versions, applications and users, in a fully isolated environment." 

"HP Integrity Virtual Machines software provides shared processor (with sub-core granularity), shared I/O and dynamic resource allocation based on demand and entitlement."

SRP (Secure Resource Partitions)

"HP-UX Secure Resource Partitions are used to consolidate multiple applications within a single image of the HP-UX 11i operating system. SRP is a combination of HP-UX 11i (PRM) resource partitions and HP-UX 11i security containment, with SRP-specific commands and tools."

HP-UX Dynamic Resource Management

HP-UX offers resource management tools to address the needs of consolidated SAP environments: 

  • Online modification of hardware (server) resources - HP iCAP 
  • Online modification of hardware resources between applications - HP Workload Management 
  • Resource Planning based on actually performance data - HP Capacity Planning 
  • Automatic "discovery" of running and installed applications - HP Application Discovery

For general information on HP resource management tools see: 

For specific information on the respective HP resource management tools see the sections below: 

HP iCAP (Instant Capacity) http://www.hp.com/go/icap

Instant Capacity allows the hardware resources of servers to be changed online to address application demand. 

There are three types of Instant Capacity: 

  • Instant Capacity for processors, cell boards, and memory:
    iCAP is a two-step purchase model, you can purchase and install reserve system capacity - inactive but ready for use in a system at a fraction of its regular price. 
  • HP Temporary Instant Capacity (TiCAP):
    TiCAP is a prepaid block of processing time that allows iCAP cores to be turned on and off. TiCAP Usage is measured in 30-minute increments. 
  • HP Global Instant Capacity (GiCAP):
    GiCAP extends upon Instant Capacity by allowing usage rights for iCAP components to be moved among a group of servers. In addition, temporary capacity can be pooled and used by servers in the GiCAP group.

For details on HP Instant Capacity see: 

HP Workload Managers

HP Workload Management monitors workloads based on policy goals and automatically migrates CPUs from idle workloads to busy ones, and from lower priority workloads to higher ones to give critical applications the resources they need. Also, it integrates with utility pricing (e.g. iCAP) to activate and deactivate additional resources based on real-time requirements.

HP Insight Dynamics Capacity Planning

"The capacity planning capabilities of HP Insight Dynamics offer the industrys first lightweight, integrated tool for ongoing capacity planning by simulating the placement of application workloads to help IT administrators improve server utilization. It captures real-world server utilization data to pre-test different scenarios before making changes to critical applications." 

HP Application Discovery

" Application Discovery works from within HP Systems Insight Manager software (HP SIM) to give you the ability to inventory running and installed applications across your system network and to centrally monitor application activity.

Within Insight Dynamics, Application Discovery integrates with HP Insight Virtualization Manager software to give you the power to group running processes into custom applications that can be added to a workload for more comprehensive resource management.

For more details see "HP Application Discovery Version User Guides" http://www.hp.com/go/insightdynamics-manuals

Resource Consumption and Planning Tools

The SAPS-Meter is an HP tool for measuring computing resource consumption of an SAP system in a simplified form, e.g. to provide information which could be used for billing etc. Contact HP for details at sap.hp@hp.com 

HP Capacity Advisor Consolidation software is a six-month-use license for just the capacity planning capability of HP Capacity Advisor software which can be used when planning which workloads can be effectively consolidated and what computing power is required.

  • SAP Employee

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