Overview

What is a Parallel Sysplex?

IBM® Parallel Sysplex enables you to run multiple copies of z/OS as a single image, so you can manage multiple systems and resources from a single point of control. In a Parallel Sysplex, operating systems can span multiple systems and share their applications and data, to scale out across the capacity of many z/OS images.

Benefits

Application availability

circle made with an arrow, not all closed, with an ON sign inside

Application availability of 99.99999%¹  and single points of failure cut outs

Resource sharing

two hexagons connecting on the vortex with opposite lines forming a helix like form

Business application permit for all the servers’ assets without altering data sharing settings

Multiple workloads balancing

beehive form of 3 hexagons, each one with a diode on different points

Application share system resources allow you to meet the business goals you define

Dynamic workload balancing

beehive form of 3 hexagons, each one with a centered diode and the top one crossed with lines

System performance maximization and white space adjusting.

Productivity enhancement

circle with five straight ascendent lines that end up on a diode

Smart handle of multiple systems as one, from one point of control and in a single server.

Software licensing savings

globe icon with money and graphic elements

Software savings by adding Machine Service Units, using Parallel Sysplex License Charging.

Features

Restart critical elements

Automatic Restart Manager recovers and restarts critical subsystems, either on the same system or on a different one.

Coupling Facility technology

Coupling Facility provides high-speed caching, list processing and locking.

Disaster Recovery

GDPS offers disaster recovery and high availability by using a cluster across two or more sites with data mirroring.

Workload Handling

Workload balancing and routing helps prevent a single point of failure and adjusts middleware workloads.

Physical resources sharing

Resource sharing enables physical resources such as files, tape drives, consoles and catalogs to be shared.

Time Synchronization

Server Time Protocol enables servers and coupling facilities to maintain common time synchronization.

Failed Elements removal

Sysplex Failure Manager specifies a policy for failure detection intervals and recovery actions to be automatically initiated.

z/OS Systems Workload Control

z/OS Workload Manager handles workloads via dynamic resource distribution to move workloads to systems with capacity.

Client success

Footnotes

¹ Expected value calculated on internal measurements and projections data base. IBM Z servers must be configured in a Parallel Sysplex with z/OS 2.3 or above; GDPS data management and middleware recovery across Metro distance systems and storage and DS888X with IBM HyperSwap. Other resiliency technology and configurations may be needed.