Overview

What is IBM PowerHA SystemMirror?

IBM offers PowerHA SystemMirror, for high availability clustering.

PowerHA SystemMirror

Rating: 10 out of 10

March 24, 2022

IncentivizedVetted ReviewVerified User

In our project, we are using IBM PowerHA SystemMirror to make our DB2 database highly available. We can't afford any downtime during production hours.

Pradeep Sharma

Administrator - Information Technology

Senior Specialist

LTI Infotech

12 years of experience

IBM PowerHA SystemMirror- Vikas

Rating: 10 out of 10

March 14, 2022

IncentivizedVetted ReviewVerified User

As we are running with critical applications and databases including oracle, db2, and others. To make them highly available we are using Power HA System Mirror which is helpin...

Vikas Arjune

Administrator - Information Technology

Manager

Vodafone

5 years of experience

Use PowerHA to keep your critical applications running

Rating: 9 out of 10

July 19, 2021

IncentivizedVetted ReviewVerified User

PowerHA is used across the organization for our most critical apps. It is used to reduce downtime on our critical apps in the event of a system failure.

Verified user

Technician

20 years of experience

IBM PowerHA Use it or Not!!!

Rating: 9 out of 10

August 29, 2017

IncentivizedVetted ReviewVerified User

PowerHA is currently used by the IBM Power Infrastructure Support group for high-availability clustering and to replicate our user profiles to our DR infrastructure. Is also u...

Angel Velez

Engineer - Information Technology

IBMi Systems Engineer

TBC Corporation

5 years of experience

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What is IBM PowerHA SystemMirror?

IBM PowerHA SystemMirror Technical Details

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PowerHA SystemMirror

Rating: 10 out of 10

Incentivized

March 24, 2022

Pradeep Sharma

Senior Specialist

LTI Infotech (Information Technology & Services, 10,001+ employees)

Vetted Review

Verified User

12 years of experience

Use Cases and Deployment Scope

In our project, we are using IBM PowerHA SystemMirror to make our DB2 database highly available. We can't afford any downtime during production hours.

Pros and Cons

High performance during peak business hours
No downtime during critical business operations
Easy updates

Likelihood to Recommend

When we were planning for our underneath OS migration from AIX 7.1 TL05 SP02 to AIX 7.2 TL02SP03 we moved the active database to another node. After failover, we rebooted the primary node and successfully upgraded the OS on the node. Once we perform the basic health check then we will fall back on the primary node in scheduled maintenance.

Most Important Features

Database monitoring configuration in cluster
Cluster FS size can be easily extended
Auto-cluster snapshot, which takes regular backup of cluster configuration

Return on Investment

There will is no single point of failure in PowerHA SystemMirror
High performance in PowerHA SystemMirror
TL upgrades are easy without any impact

Alternatives Considered

IBM PowerVM

There are multiple reasons that bring PowerHA SystemMirror upfront from other software. It's installed on IBM AIX, which is a high-resilience and high-performance operating system. Additionally, OS and TL upgrades can be easily done while using PowerHA SystemMirror.

Other Software Used

IBM Power System Virtual Server, IBM Power servers, IBM PowerVM

IBM PowerHA SystemMirror- Vikas

Rating: 10 out of 10

Incentivized

March 14, 2022

Vikas Arjune

Manager

Vodafone (Telecommunications, 10,001+ employees)

Vetted Review

Verified User

5 years of experience

View profile

Use Cases and Deployment Scope

As we are running with critical applications and databases including oracle, db2, and others. To make them highly available we are using Power HA System Mirror which is helping to run the environment with minimal downtime window in case of worst scenarios as well as in case of maintenance which is helping a lot in my business.

Pros and Cons

Resource group movement.
Application monitoring.
Problem determination.

Likelihood to Recommend

In every organization, we have some of the critical applications in on Premise datacentre were a lot of dependencies in a picture in terms of application as well as a business where we can make highly available to this application by using Power HA Systemmirror by using this we can avoid last time surprises.

Most Important Features

Application monitoring.
Resource movement.
Problem determination tool.

Return on Investment

Reliable High Available Environment.
SAN Based Monitoring in terms of devices.
Network level check in terms of HA services.

Alternatives Considered

IBM AIX

As I am having long experience with this so no doubt, I am very confident for it where I can deploy easily and manage easily in terms of any issues can go with multiple logs and take further actions on it to fix the issue in a swift manner which matters a lot to me. That's why I have given higher priority to it.

Other Software Used

IBM AIX, IBM PowerVM, IBM Power System Virtual Server

Use PowerHA to keep your critical applications running

Rating: 9 out of 10

Incentivized

July 19, 2021

Verified User

Vetted Review

Verified User

20 years of experience

Use Cases and Deployment Scope

PowerHA is used across the organization for our most critical apps. It is used to reduce downtime on our critical apps in the event of a system failure.

Pros and Cons

Reduces downtime
can automatically failover the apps and start them up
Lots of customization options

Likelihood to Recommend

It is well suited if you have a mission-critical application that you need to keep running. While there will still be some downtime while it fails over, it is greatly reduced.

Most Important Features

automatic failover
ability to DLPAR CPU and memory resources
customization

Return on Investment

It does require two separate servers which is an extra expense
If there is a failure the downtime for the apps is limited

IBM PowerHA Use it or Not!!!

Rating: 9 out of 10

Incentivized

August 29, 2017

Angel Velez

IBMi Systems Engineer

TBC Corporation (Automotive, 10,001+ employees)

Vetted Review

Verified User

5 years of experience

View profile

Use Cases and Deployment Scope

PowerHA is currently used by the IBM Power Infrastructure Support group for high-availability clustering and to replicate our user profiles to our DR infrastructure. Is also use for asynchronous geographic mirroring and space-efficient FlashCopy where we perform our backups.

Pros and Cons

Asynchronous geographic mirroring extends the host-based replication to our DR environment.
FlashCopy provide us with a point in time snapshot of our Production environment from which we can run our daily backups without downtime.
Since PowerHA runs at the kernel level it allows the system to send a message from the primary system to the backup or secondary system when the node has crashed.

Likelihood to Recommend

If you have an environment where you have to replicate your Sybase I would recommend an implementation that includes MIMIX for PowerHA as part of the entire environment, but if you have a Sybase that never changes and you run all your applications on an iASP the IBM PowerHA SystemMirror is the solution for your business.