5 1 0:Creating a Replication Event

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Docs latest icon.png Welcome to the latest SEP sesam documentation version 5.1.0 Apollon. For previous documentation version(s), check documentation archive.


Overview


Replication involves creating and maintaining redundant copies of data in a separate location, ensuring data availability and resilience. In SEP sesam, different types of replication are available, the SEP Si3 replication and HPE StoreOnce replication, with different capabilities and benefits.

A replication event represents the execution of replication tasks, which define the scope, settings, and destination for the replication process. Replication tasks enable you to replicate data from a source location to a target location, providing data redundancy and facilitating efficient data recovery.

There are two primary methods to perform replication in SEP sesam:

  • You can schedule replication events, where replication tasks are executed at specific times or intervals. This allows you to automate the replication process and maintain up-to-date copies of your data in the target location.
  • You can configure replication tasks as follow-up events for backup events. With this approach, data replication is triggered immediately after successful backups. By combining replication tasks with backups, data is promptly replicated, minimizing the risk of data loss and enhancing data availability.

Create a replication event

To create a new replication event, go to Main Selection -> Scheduling -> Schedules, right-click on a schedule and then click on New Replication Event.

Define the settings and options as required. For detailed explanations of the available options, refer to section Replication event options.

Information sign.png Note
Only savesets with statuses successful and with warnings are selected for replication, while savesets with errors and partially restorable savesets (containing data from cancelled backups) are not replicated.

You can view the status of your replication jobs. In Web UI navigate to Monitoring -> Migrations/Replications and review the job results. The status overview lists replication tasks by name, along with details of completion status, start and end times, and media pools used for the job.

Screenshots

New replication event Apollon.jpg

Replication event options

When creating or modifying a replication event, the following options are available to customize its settings and behavior. Note that the source and destination storage settings (media pool, drive, and interface) are defined in the replication task and cannot be modified in the replication event.

Options

General
Task name Select the replication task this event is based on.
Sequence control
Priority Select a priority that will determine the relative importance of this event and establish the execution order of events in a backup day. Event priorities in SEP sesam range from 1 (lowest) to 99 (highest). Events with priority 0 are always executed first, cannot be blocked or used for blocking events.
Blocking date Select this option to create a blocking event that prevents the execution of equal events scheduled on the same backup day as the blocking event, but with lower priority. By using this option, events associated with the same task and having lower priority will be blocked from starting.
Storage settings
Information sign.png Note
Source and destination media pool options are read-only. These options can be modified in the replication task.
Data mover Optionally, you can select the data mover that will be used in the replication process. The data mover is responsible for handling the data transfer between the source and destination locations. This option is useful when access to a third-party software API is required or when you need to redirect the data stream.
Backup date
Date If a fixed time range was defined in the replication task, it will be displayed in this field and cannot be changed for the current event. If you wish to modify the time range, you can use the option Relative backup date.
Relative backup date You can specify the number of days in the past to define the time frame for the replication process.

For example, if you specify a relative time frame from -7 to -2, it will replicate the data for the past five days, starting from seven days ago and ending the day before yesterday (two days ago). Similarly, a relative time frame from -10 to 0 will replicate data from the last 10 days. Because replication only copies new blocks of data, you can specify a high number in the From field, such as -99,999. This ensures that all backups since the initial replication will be checked, but only the changed data will be replicated.

Note that positive values cannot be set, as they would indicate a time range in the future. The value 0 represents the current day.

Based on You can select whether the time frame for the replication process is based on calendar days or Sesam days. By default, Sesam days is selected. For more information, see Backup day.
Options
Options Optionally, you can configure additional options to be performed with this event.
Note Add any comments or information related to the replication event.


See also

About Replication - *Configuring Replication - Creating Replication Task

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