The Indusa Blog

High Availability and Disaster Recovery Testing

Posted by Indusa Admin on October 19, 2015 5:09 am

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Reliable and responsive IT services is a key support of a successful business. With every organization highly dependent on IT, application uptime, high availability, and disaster recovery are issues that have a direct bearing on the financial health of companies. Any downtime, planned or unplanned, can severely impact the operations of any enterprise.

High Avail Disaster Recovery Testing

According to Gartner, by the end of 2020, 15% of all consumer-level digital businesses will fail due to inadequate protection against unplanned end-to-end transaction downtime. Testing services that lie at the crux of an enterprise’s service delivery model ensure the highest uptime and fastest recovery in the event of a failure.

High Availability of Services

Below are four types of solutions that ensure high availability of services:

1. Full Server Failover

By automatically switching to a redundant or standby server upon failure or abortion of the previously active application, you can ensure high availability of your applications and services. Replicate data on your primary server onto a secondary server and synchronize both the servers for the purpose of server failover. Have a third failover monitoring server monitor the activities of the primary server, receive notification as soon as a failure occurs and have your secondary server instantaneously replace the primary server as soon as a variation is detected.

2. Backup Solutions

Backing up all mission-critical data in your servers on a periodic basis can ensure safety of your data and continuity of your business. Disaster recovery backup solutions include full backup of all your data, files, emails, and databases. Back up solutions also include continuous backup of critical data every few minutes, data archiving that keeps snapshots of old and rarely used data, and incremental file restoration that allows you to restore multiple versions of files and documents in the event of a failure.

3. Migration Solutions

By migrating your on-premises data to off-site locations, you can safeguard mission critical data from hackers and data breaches. Migrate to any physical, virtual, or cloud-based platform and you’ll protect your databases, systems, and applications. Achieve zero downtime with stringent SLAs and carry out workload migrations across operating systems, platforms, and environments using state-of-the-art tools and proven workflows.

4. Cloud Solutions

Data migration from an on-premises data center to Microsoft Azure or Amazon Web Services cloud lets you achieve RTO and RPO goals coupled with low risk and zero downtime. By employing Disaster Recovery as a service (DRaaS), you can have the required flexibility in migrating a specific set of applications or servers without impacting your daily operations. Protect and safeguard your sensitive data and recover lost data with just a few clicks.

Disaster Recovery Testing

At the same time, different types of testing should be utilized to ensure extraordinary performance of your system for high user satisfaction:

1. Functional Testing

Testing software systems for functional capabilities is essential to ensure conformity to requirements. Identify the functions that the software is expected to perform, and create input data based on these specifications. Compare and evaluate each software function with business requirements, and make sure your software actually functions the way it was intended to and based on the users’ needs.

2. Compatibility Testing Using Operating Systems

As more and more devices with dissimilar operating systems are used to access IT services, ensure compatibility of your system with the computing environment by testing your application across the following: 1) Windows Platforms: Windows Server Edition including 2012 and 2008 across all versions (32 & 64 bit) and Windows Desktop Edition including Win XP, Win Vista and Win 7, 8, 8.1, 10 across all versions (32 & 64 bit) 2) Linux Platforms: RHEL , SLES , CentOS , XEN Hypervisor Distribution (32 – 64 bit systems)

3. Localization OS Testing

Testing of software and applications on a global scale prevents usability, functional, and linguistic problems down the line. A helpful tip is to test your internationalized app at different stages of development. Also we recommend that you preview your application to detect auto-layout problems, simulate languages, and test the application across localized operating systems like German, French, Korean, Japanese, Chinese, and Spanish.

4. Testing Using Virtualization Technologies

Virtualization technologies like Microsoft HyperV, VMware ESX, and Xen HyperV can be used to test your software and applications. You can also reduce physical hardware, and increase process efficiency by creating unlimited user configurations in the virtual environment. Then, choose the most suitable configuration at each stage of development. This way, you’ll be able to achieve easy portability to other hardware, consolidate servers, and create backups to safeguard critical data.

5. Version Interop Testing

Test your software across machines with different versions, this allows you the capabilities to check for compatibility and cross functionality, and evaluate interoperability with different environments.

6. Fault Tolerance Testing

Testing your software by simulating failures and faults is essential to check its fault tolerance in the event of a disaster. Ensure the system continues to work properly by anticipating exceptional conditions and testing the system to isolate the fault and contain it to prevent propagation of the failure.

Providing a Stable and Reliable IT Environment

As IT leaders have become more accountable to stockholders, investors, and partners for around-the-clock system stability, continuity, and online access, organizations should deploy state-of-the-art testing solutions. High availability and disaster recovery testing utilizes real-time replication to prevent data loss and enable fast recovery to secondary servers in the event of failure at primary data center sites.

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About the Author -Ahesanali Vijapura

Ahesanali Vijapura is a highly professional Senior Project Manager (QA Services) at Indusa. He has vast experience in managing manual and automation test teams, onsite as well as offsite. He is an expert when it comes to software testing in various environments, server/client testing management and integration of multidisciplinary software and hardware systems.


Contributing Writer: Neha Kumar