![]() When the VM is running the filesystems of the guest are frozen (see below) and temporal disks are created so the VM can continue its normal operation. Pre-backup: Disks (or increments) are prepared for backup. VM backups can be taken live or while the VM is powered-off, the operation comprises three steps: Incremental backups track changes by creating checkpoints (disk block dirty-bitmaps) using QEMU/Libvirt. Incremental, each backup contains only the changes since the last backup. The delay value for each machine is determined when the protection plan is applied to the machine and remains the same until you edit the protection plan and change the maximum delay value.Virtual Machine Backup Operations ¶ Overview ¶ Backup Types ¶įull, each backup contains a full copy of the VM disks. Select Distribute backup start times within a time window, and then specify the maximum delay. You may want to use this setting when backing up multiple machines to a network location, to avoid excessive network load.Ĭlick the gear icon, then Backup options > Scheduling. The delay value for each machine is selected randomly and ranges from zero to the maximum value you specify. Introduce a delay from the scheduled time. While the schedule is disabled, the retention rules are not applied unless a backup is started manually. Select the Run the plan within a date range check box, and then specify the date range. ![]() Set a date range for when the schedule is effective.For more information, refer to "Start conditions". Specify the backup start conditions, so that a scheduled backup is performed only if the conditions are met.With any destination, you can do the following: For more information, refer to "Schedule by events". To do this, select the event type in the schedule selector. With any backup scheme, you can schedule the backup to run by events, instead of by time. Specify schedules for full, differential, and incremental backups.ĭifferential backup is not available when backing up SQL data, Exchange data, or system state. This backup scheme is displayed as a Custom scheme on the protection plan panel. You can modify these schedules and the time to run the backup. Monthly full, Weekly differential, Daily incremental (GFS)īy default, incremental backups are performed on a daily basis, Monday to Friday differential backups are performed every Saturday full backups are performed on the first day of each month. The day on which the full backup is created depends on the Weekly backup option (click the gear icon, then Backup options > Weekly backup). You can modify the days of the week and the time to run the backup.Ī full backup is created once a week. This scheme is not available when backing up to a tape device or an SFTP server.īy default, backups are performed on a daily basis, Monday to Friday. The single-file backup format is not available when backing up to locations that do not support random-access reads and writes, for example, SFTP servers. This results in extremely fast cleanup, with minimal resource consumption. The software marks the blocks used by outdated backups as "free" and writes new backups to these blocks. This format leverages the speed of the incremental backup method, while avoiding its main disadvantage–difficult deletion of outdated backups. ![]() The backups use the new single-file backup format A new backup format, in which the initial full and subsequent incremental backups are saved to a single. ![]() If you want to change the backup frequency, move the slider, and then specify the backup schedule. You can select the time to run the backup. In Backup scheme, select one of the following:īy default, backups are performed on a daily basis, Monday to Friday. A backup scheme is a part of the protection plan that includes the backup schedule and the backup methods. You can choose one of the predefined backup schemes or create a custom scheme. All subsequent backups are incremental and take significantly less time. The first backup is full, which means that it is the most time-consuming.
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