High Availability Clustering for SAP
For a seamless recovery of your SAP servers, SteelEye Life Keeper from Open Minds guarantees to provide you with a complete disaster recovery solution ensuring that you maintain business continuity. Our high availability solutions will grant continuous data protection providing data replication as well as the monitoring of all your SAP servers to ensure failover through the Java GUI.
SteelEye® LifeKeeper® for mySAP.com offers an affordably
priced and easy-to-use high availability (HA) solution for business
critical mySAP.com applications, infrastructure and data. LifeKeeper
for mySAP.com, designed in collaboration with SAP AG, is specifically
built to provide uninterrupted use of mySAP services.mySAP.com is composed of several cooperating services that may
be run on a single server or may be distributed across several servers
in a cluster. Some of these services have redundancy built into
them, while others do not and represent single points of failure
in the SAP environment.
LifeKeeper for mySAP.com protects and provide HA for production,
development and test environments, all monitored and controlled
from one management console.
LifeKeeper for mySAP.com overview
LifeKeeper for mySAP.com includes recovery capabilities that
monitor and provide switchover for the SAP Central Instance (CI),
including Enqueue and Message servers, and provides recovery capabilities
for database, NFS and IP server components. LifeKeeper for mySAP.com
provides support for DB2, Oracle and SAP DB, and enables virtualisation
of IP addresses so that they can be moved between network cards
in the cluster as needed.
LifeKeeper for mySAP.com individually monitors the health status
of key application resources, and is able to stop and restart the
resource both locally or on another server in the cluster.
Supported High Availability Cluster Configurations
Within a single cluster, two major cluster configurations are
supported that consist of two servers hosting the CI and DB with
zero or more additional Application Servers (AS), and utilise shared
file storage for database and application files:
1. CI and DB running on one server with failover to a second server.
2. CI and DB running on different servers, each backing up the
other resource.
mySAP.com Health Monitoring & Recovery
LifeKeeper for mySAP.com monitors the health of the CI through
the use of the sapinfo utility, and utilises the lgtst utility to
monitor the message server. Upon detection of a problem, LifeKeeper
will initiate the following recovery operations:
Parallel Recovery -LifeKeeper for mySAP.com recovers mySAP.com
and database servers in parallel, while preventing deadlock conditions
by enabling restore of database service prior to mySAP.com in-service
operation. This ensures correct recovery procedures.
Intelligent Switchback - LifeKeeper for mySAP.com enables the primary
server to come back into service automatically, or manually with
administrator intervention, as required.
mySAP.com Client Protection
LifeKeeper for mySAP.com supports the usage of a virtual server
name for all client communication with the CI, thereby providing
a switchable IP address that can be active on whichever server the
CI is running. This enables users to connect without having knowledge
of which server they are utilising.
System Requirements:
- SAP R/3
- Oracle, IBM DB2, SAP DB
- Linux Distribution: SuSE or RedHat
Wizard-Driven Configuration
LifeKeeper utilises intelligent wizards to automatically discover
and configure mySAP.com hierarchies, and extend this hierarchy to
backup servers. The LifeKeeper Java-based GUI enables management
from any node within the network, and provides simple, convenient
and easy implementation of the mySAP.com cluster.
SteelEye LifeKeeper at work for Infraserv Höchst
Infraserv Höchst is a leading integrated site operator and
system provider for the chemical and life science industries. With
proven know-how and a wide network of competencies, Infraserv enables
customers to concentrate on their core business and so makes an
important contribution to their success.
Key to Infraservs service delivery capabilities is mySAP.com -
well embedded as the standard for ERP B2B-Processes, Supply-Chain
Processes and eBusiness scenarios.
Highly availability of mySAP.com is a must, since application downtime
can cost InfraServe customers millions of Deutsche Marks in business
downtime.
Infraserv IT group chose to run mySAP.com on Linux for cost and
performance advantages. SteelEye LifeKeeper for mySAP.com, implemented
by German system integrator Maxpert, provides the level of reliability,
availability and performance their customers expect and demand from
an enterprise site operator.
SteelEye LifeKeeper for mySAP.com provides high availability clustering
support for the complete mySAP.com infrastructure - enabling failover
services for critical and vulnerable components, and delivering
a high level of reliability, dependability and serviceability.