Enterprise systems: Fault-tolerant upgrade for real-time historian

01/11/2007


Access and visibility into mission critical data are essential for many initiatives, including regulatory compliance, energy management, and performance improvement. Such enterprise-wide data connectivity gets a boost with the release of a High Availability (HA) version of OSIsoft 's PI System. This update increases data protection by providing fault tolerant software that delivers interface failover, buffering, PI Server replication, and SDK services.

Thousands of installations worldwide already use the OSIsoft PI System to manage assets, mitigate risks, and identify new market opportunities. Even in a simple configuration, there are unavoidable conditions that can trigger data loss or render data inaccessible. While the PI System can prevent data loss during planned maintenance, lack of access to data during a maintenance period may be unacceptable for certain end users. Unplanned downtime represents another potential source of data loss.

With the HA release, there is greater assurance that data will always be gathered, stored, and available, according to the company. Existing OSIsoft customers can upgrade from PI to PI HA using point-and-click tools. Within the release, primary technical advances include:

  • PI Server replication—Redundant PI Servers including a primary and one or more secondary servers, together referred to as a "collective." The PI server configuration tables will be replicated across the collective.

  • Interfaces—All interfaces will write time-series data directly to members of the collective, buffering data temporarily for those unable to receive it for a period of time and assuring that time-series data stored in each archive is an exact duplicate of the others.

  • Fail-over—Changes to the PI interface design to accommodate HA include the ability to have a pair of PI interface nodes connected to a PI Server or to the collective. If the primary interface node fails to deliver data to the PI Servers, it will fail to the secondary PI interface to run in "hot" standby mode. PI interfaces can now be started without a connection to the PI server.

—Control Engineering Daily News Desk
Compiled by Renee Robbins , editorial director





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
Each year, a panel of Control Engineering editors and industry expert judges select the System Integrator of the Year Award winners.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Learn how to create value with re-use; gain productivity with lean automation and connectivity, and optimize panel design and construction.
Go deep: Automation tackles offshore oil challenges; Ethernet advice; Wireless robotics; Product exclusives; Digital edition exclusives
Lost in the gray scale? How to get effective HMIs; Best practices: Integrate old and new wireless systems; Smart software, networks; Service provider certifications
Fixing PID: Part 2: Tweaking controller strategy; Machine safety networks; Salary survey and career advice; Smart I/O architecture; Product exclusives
The Ask Control Engineering blog covers all aspects of automation, including motors, drives, sensors, motion control, machine control, and embedded systems.
Look at the basics of industrial wireless technologies, wireless concepts, wireless standards, and wireless best practices with Daniel E. Capano of Diversified Technical Services Inc.
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
This is a blog from the trenches – written by engineers who are implementing and upgrading control systems every day across every industry.
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Control Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.