Db2 pureScale
Why Db2 pureScale?
In a globalised world, business hours are continuous, and availability is crucial for revenue and customer confidence. IT leaders must create and support a scalable infrastructure while keeping costs in check.
Db2 pureScale technology is based on the IBM System z data sharing architecture that businesses worldwide trust for their most critical systems.
With Db2 pureScale technology, you can keep your critical systems available 24/7, even during planned and unplanned outages. This technology offers highly flexible scalability, allowing you to add capacity on demand, which reduces wastage and benefits your bottom line and you only pay for the capacity you use.
The Benefits
Db2 pureScale ensures 24/7 database availability, reduces downtime costs, manages workload peaks, supports scalability, and enables businesses to capitalise on new opportunities with minimal risk.
Continuous Availability
For unplanned outages, Db2 pureScale allows you to recover instantly.If one or more members fail, the workload balancer automatically identifies the available members and directs new transactions to the surviving members without interrupting your application. The remaining members in the cluster continue to have uninterrupted access to the data, and in-flight transactions are promptly recovered.
For planned outages, Db2 pureScale technology ensures zero downtime. You can perform rolling maintenance across your cluster with transparency to the application and no interruption to your business.
Unlimited Capacity
With Db2 pureScale technology, you can expand or shrink your cluster as needed.With Db2 pureScale technology, you can expand or shrink your cluster as needed, which helps you avoid the expenses of overprovisioning. You can easily increase capacity by adding new members to the instance when necessary
Application Transparency
With Db2 pureScale you don’t need to modify your application code.You can scale your application to meet the most demanding business requirements. This flexibility means quick deployment and reduces stress for IT professionals. Your developers don’t even need to be aware that more nodes are being added!
Cost savings
The capacity to increase or reduce means you never over-provision your environment.Db2 pureScale’s cluster-based, shared-disk architecture cuts costs through efficient resource utilisation.
Db2 pureScale reduces the risk and cost of business growth by providing unlimited capacity, continuous availability and application transparency. Db2 pureScale is based on industry leading Db2 for z/OS data sharing technology and is available as part of the core IBM Db2 LUW engine.
How does it work?
Db2 pureScale adopts many of the same concepts and terminology as the well-established Db2 for z/OS data sharing technology.
Multiple Db2 instances, or “members” accept and service incoming Db2 work with all of them accessing a single copy of the data.
To stop multiple processes all updating the same data the PowerHa pureScale Server (also known as the Coupling Facility) is responsible for co-ordinating the activities of all of the Db2 members in the pureScale group.
The CF holds shared locking information and cached data pages of interest to one or more members of the group. Each member has direct access to the CF via an InfiniBand high-speed network interconnect, minimizing the performance overhead.
Why Triton?
Triton Consulting provide consultancy and services to help organisations plan and implement this ground breaking technology.
All our consultants are Db2 experts with deep technical knowledge and experience. We have extensive expertise in both Db2 LUW and Db2 z/OS data sharing. Our consultants have dedicated significant time to working in IBM labs and have successfully established and operated a Db2 pureScale environment in our own technology centre.
Resources
Db2 pureScale - The Deployment Journey
Iqbal reflects on the pureScale deployment journey, what it was and what it is now.