In today’s business environment, email communication is critical for smooth operations of a company. If this is interrupted or lost, it could lead to repercussions, such as compliance and regulations issues, loss of business, impact on brand damage, etc. As most of the companies depend on Microsoft Exchange Server for email communication, it is important that the server works smoothly to ensure business continuity.

Even after taking preventive measures, there are a lot of things that could hinder the operations of Exchange Server or result in its failure, leading to downtime. For example, software and hardware issues, natural disasters, cyber-attacks, misconfiguration of Exchange Server, human errors, and others. However, the ultimate motive of a company/Exchange admin is to ensure swift recovery within minimum downtime after a failure or disaster. In this article, we will discuss some strategies and ways on how to ensure business continuity with swift recovery and prevent downtime after a failure.

What causes Microsoft Exchange downtime?

Before going into detail, let’s discuss what could cause downtime in the Exchange Server environment.

• Hardware failure, including storage disk failure, motherboard failure, network device failure, etc.
• Sudden loss of power or power surge.
• Botched installation of a Cumulative Update (CU) or Windows OS Update.
• Human errors during maintenance work on the server.
• Natural disasters, like floods, fire, etc.
• Ransomware and other cyber-attacks.
• Incompatible or not application-aware backup solution.

Such issues can cause Exchange Server failure or other issues, resulting in disruption of services for many hours and loss of data, ultimately loss of business.

Understanding recovery time and business continuity metrics

Many businesses defined their recovery objective and restore procedure. This is calculated depending on the business needs, how much downtime the company can sustain, and what would be the maximum time until it recovers operations. These minimum requirements set the threshold, before the company or brand would suffer business loss or other repercussions.

These measurements are Recovery Time Objective (RTO), which is the time it will take to recover in case there is a downtime or disaster, and Recovery Point Objective (RPO), which defines the limit of how much data loss is acceptable. It is also important to take into consideration the Service Level Agreement (SLA) with the involved Exchange Server admins, network team, hardware team, and suppliers. Failure to align with the RTO and RPO may lead to compliance and regulation breach and can open a lot of legal and other obligations.

Strategies to ensure swift recovery of Microsoft Exchange

There are several things that must be implemented and maintained to ensure swift recovery of the Exchange Server and the databases in case of an issue or disaster. The first thing to consider is the monitoring of the Exchange Services and hardware by using monitoring tools. If small issues are tackled immediately, these can prevent a number of bigger issues later.

One can make use of failover and high availability using the Database Availability Groups (DAG) where data is replicated between servers. In case one of the servers fails, the services and data will automatically failover to the next server with minimal or no disruption. In addition one must also consider if something happens to the live and disaster recovery site, there should be an offsite backup at a third location or cloud storage.

A disaster recovery document must be in place. This document will include information about what needs to be done (step-by-step) when a disaster strikes, the people involved, the processes, and procedures. This should be kept updated and also tested on at least yearly basis.

Importance of specialized Exchange recovery tools

When Exchange Server fails, the priority is to recover the services as soon as possible, along with minimal to no data loss. A server can be easily rebuilt using the recover mode option but the database, if corrupted, will take a considerable amount of time for recovery. Moreover, restoring database from backup would lead to data loss.

To recover data from corrupted databases within minimal time and with no loss, you can rely on specialized third-party Exchange recovery tool. Stellar Repair for Exchange is one such reliable tool that can easily open corrupted or offline databases without the need of a running Exchange Server. You can recover all the items, including user mailboxes, shared mailboxes, online archive, public folders, and disabled mailboxes. You can save the recovered items to PST files or directly export them to online Exchange Server database or Microsoft 365 (Office 365). It features automatic mailbox matching and parallel exports to facilitate fast recovery.

Downtime Prevention Tips for Exchange Admins

Monitoring and setting up Database Availability Groups (DAG) is not enough to ensure uptime and protection of the servers and the company data. Here are some tips that can help in prevention of downtime in Exchange Server:

• Maintenance work on hardware is essential to ensure that the servers and storage are operational.
• Patch management must be planned accordingly and done during a maintenance window, along with checking the patch release notes.
• Backups must be taken by application-aware software to ensure shadow copy backups. Backups must be monitored on a daily basis with a monthly restore test.

Conclusion

As discussed above, there are a lot of things that can put an Exchange Server down, resulting in loss of business and brand damage. We have seen the importance of backup, disaster recovery testing and documentation, high availability, and the right tools that can ensure recovery of the data in the least possible time, when the server fails.