How to Prepare a Disaster Recovery Plan

A disaster recovery plan is not simply a matter of making backups; it means deciding in advance how much data may be lost when a service goes down, how quickly the site must be available again, and who will verify the restoration and how. First, write down your RPO and RTO targets, then check that the backups are accessible and carry out a restoration drill in an isolated environment.

Determine access before starting a disaster recovery plan

Instructions can be misleading if you have not clarified the environment in which the plan will be implemented. If you use shared hosting, you generally have access to the hosting panel’s backup, file manager, database, and DNS screens; you may not have access to operating system services or physical disks. With a managed or self-managed server, you may also need access to the server administrator account, storage, database management, and the DNS account.

Before starting, list the domain’s DNS management, application files, database, uploaded media files, configuration values, and backup storage account. Do not place passwords or access keys in plain text in the article or a shared document; within the plan itself, refer only to the corresponding entry in the secure password vault. If you are going to make changes, first record the current setting and backup schedule.

Choose RPO and RTO targets according to actual needs

RPO is the acceptable amount of data loss following a failure. If the last backup was taken two hours ago, orders or content changes made during those last two hours may be lost even if the system is restored correctly. RTO is the acceptable time required to make the service usable again. These two targets are not the same; a site that comes back quickly but returns to older data may not be sufficient for some operations.

The decision can be made as follows: for an informational site whose content changes several times a day and that can tolerate a short outage, less frequent backups and a longer RTO may be acceptable; for a store that receives frequent orders, where data loss is costly, the backup frequency and restoration method should be planned more carefully. However, reducing the RPO alone is not a solution; if the backup is corrupted or stored on the same server, the target remains only theoretical.

For example, hypothetically, suppose an organization’s announcements site is updated twice a day and its administrators can accept a four-hour outage. In that case, a four-hour RPO with a longer RTO may be reasonable. By contrast, if the same organization’s application form is continuously receiving data, restoring only the site files is not enough; database records must be protected more frequently, and the form service must also be verified separately.

Review backups for usability, not merely for their existence

The first check is the latest successful run recorded on the backup screen. Even if the record appears current, check whether the file backup, database backup, and, where necessary, the media directory are each included in the scope. Configuration files, scheduled tasks, and DNS information required for the application to work may also be part of the plan; depending on the provider, these may not be included in the automatic backup.

If the backup exists only on the production server, a disk failure or account-access problem may affect the backup as well. Therefore, use a secure secondary location supported by the provider and evaluate the retention period separately from the RPO. An old backup is not automatically useless; however, you must write down in advance which data will be missing when you restore from it.

Conduct the restoration drill in a controlled manner

Do not test by deleting files on the real site or modifying the live database. If possible, use a staging area, a temporary server, or the provider’s isolated restoration feature. If no such environment exists, obtain written confirmation from the provider about which resources its restoration method affects before making changes to the production account.

1. Record the starting state: Note the domain name, application version, database name, file scope, time of the latest backup, and current DNS values. This information prevents the test environment from being confused with the live environment.
2. Select an appropriate backup: Compare the most recent successful record in the backup panel with the previous record. If the latest record contains a missing-file or database warning, do not treat it as the only option; set aside the previous record, if it appears complete, for testing.
3. Restore to an isolated environment: Restore the files first, then the database and the configuration required by the application, using a method supported by the provider. If the files have been created but the application cannot connect to the database, the problem may be that connection details or permissions have not been adapted to the environment rather than that the backup is incomplete; instead of simply broadening permissions, check the relevant configuration values.
4. Perform functional verification: Test the home page, administrative login, a page that reads data from the database, file uploading, and the critical form. If old content appears while the home page opens, the files may have been restored while the database or cache layer remains incomplete. If a form submission cannot be created, check whether a new test record was created in the database; based on this finding, examine the connection, schema, and write permission separately.
5. Record the result and duration: Document the restoration start and end times, the component that remained missing, and the acceptance criteria. Repeat the same test operation after the change, and this time examine the newly timestamped records. If the problem persists, do not change the production environment; preserve the test environment, return to the previous configuration, and clarify the provider’s restoration scope.

When should you update the disaster recovery plan?

Reassess the plan when you add a new payment module, database schema, storage location, or DNS provider. Even if a backup is created successfully after a change, the new component has not been proven to work during restoration testing. Change only one variable in each test so that you can distinguish whether a failure originates from the backup file, the application configuration, or network routing.

The first practical step is to record the scope and time of the latest successful run from the current backup screen, then write the RPO and RTO targets in one sentence each. When evaluating server or hosting options, you can also review the İyibirNet resource for general guidance; in your technical recovery plan, however, always base decisions on verified backup and restoration results from your own environment.