Backup and Retention Settings

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1. Scope

This article discusses the Basic Options section for agent configuration. To configure the settings for an agent after it's already installed, go to the web interface for the Datto appliance, click the Protect tab, choose the protected machine that you want to configure, and click the Configure Agent Settings link.

2. Backup and Retention Settings

Pause Backups

This option allows administrators to pause local backups. This is of particular use if you are reconfiguring settings and do not want a backup to begin.

Figure 1 - Pause Backups interface

Local Backups Interval and Schedule

In this section, you set the interval and schedule for local backups. The default is to run hourly backups from 9 am to 6 pm, Monday through Friday, which results in 50 backups per week.


Figure 2 - Local Backup Interval and Schedule, default settings

You can change the settings that are underlined in the UI. To do so, click on the setting, and you will see a drop-down menu. If you want to keep the same schedule on the weekends, click Monday through Friday, and change it to every day. If you would like a different schedule on the weekends, check the box that says In addition, Saturday and Sunday backups should be performed at. You will then see available times for Saturday and Sunday backups. You must click Apply or Apply to All to save your changes. Apply to All will change the settings for all protected machines.

For a customized schedule, click the Custom settings link.


Figure 3 - Local Backup Interval and Schedule, custom settings

In the custom schedule, you can select a custom schedule and interval for your backups. To save your changes, click Apply or Apply to All.

Local Backup Retention

The default retention keeps local backups on the device for 3 months. You can change this by clicking on the underlined option.


Figure 4 - Local Retention, default settings

By default, intra-daily backups are retained for 7 days. After 7 days, it keeps daily backups for 1 week. After 1 week, it keeps weekly backups for 1 month. After that, monthly backups are kept for 3 months.

To set custom retention settings, click on the Custom settings link.


Figure 5 - Local retention, custom settings

To learn more about how retention works, see the article Understanding The Retention Process.

Offsite Backups Interval and Schedule


Figure 6 - Cloud Backup Interval and Schedule, default

By default, your backups replicate to the Datto Cloud once per day. To change this, click the Custom settings link. Remember that offsite replication consumes bandwidth. You can set a sync priority for the agent to determine which agent's backups get sent to the Cloud first.


Figure 7 - Cloud Backup Interval and Schedule, custom

Remember to click Apply or Apply to All to save your changes.

Cloud Backup Retention

By default, backups are kept in the cloud for 6 months. You can change this by clicking the underlined option ("6 months").


Figure 8 - Cloud Backup Retention, default

By default, the Cloud retains all intra-daily backups for 7 days. After that, it keeps daily backups for 1 week. After that, it keeps weekly backups for 1 month. And then after 6 months, the monthly backups are deleted. To change these settings, click Custom settings.


Figure 9 - Cloud Backup Retention, custom

For more details about the retention process, see the article Understanding The Retention Process.

Backup Engine Options

This option allows you to pick which backup engine ShadowSnap will use for backups.

Figure 10 - Backup Engine Option Interface

Application Aware VSS w/ STC fallback

  • The Datto will attempt to first do a Microsoft Shadow Copy Provider VSS backup (Application Aware VSS).
  • If this fails, then it will attempt a crash consistent state backup using the Storage Craft VSS Provider (STC).

STC Backup Engine

  • The Datto will attempt to only do a STC backup.

Application Aware VSS

  • ​The Datto will attempt to only do a VSS backup.

Application Aware VSS & STC Backup Engine

Application Aware VSS refers to the use of the Microsoft Shadow Copy Provider. This VSS Provider interacts with supported applications to provide backups as the the applications are running. Unlike the Microsoft Shadow Copy Provider, the backup provided by the STC Backup Engine is not application-aware as it simply provides a backup equal to that of a crash-consistent state. ​A crash-consistent state backup can be compared to the state that the system will be in directly after a hard reboot, such that data in processing may not be saved properly. To learn more about VSS writers, visit this article.

2.8. Secure File Restore & Export

Ensures that while Recovery Point File Restores and VMDK/VHD exports are mounted on the SIRIS that they are not accessible to anyone else on the local network. The dropdown box lists available users that can be set to have access credentials for the share when data is being mounted on the SIRIS. Users are added through the Local Users/Contact page of the SIRIS Web Console.

By default this option is set to disabled which means that the Recovery Points will be shared on the network but will not be browsable if someone browses the Datto, ie: \\DattoHostname\


Figure 11 - Secure File Restore & Export


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