User`s guide

A "differential" backup scenario uses the same weekly full system backup with the backup of files

that have changed since the last full backup on a daily basis.

While this scheme takes up progressively more storage space as each new day of the week passes, a

recovery would only involve two backups - the last FULL backup followed by the previous day's

differential backup. Many users prefer this method as it simplifies recovery and most backups are

done overnight.

In these examples, the only differences in the two backup scenarios are:

Incremental backups require less storage space while differential backups require more.

Incremental backups require all of the backups used for that week in order to do a complete

recovery, while the differential backup only requires a maximum of two backups at any given time.

An incremental or differential backup created after a disk is defragmented might be considerably

larger than usual. This is because the defragmentation program changes file locations on the disk and

the backups reflect these changes. Therefore, it is recommended that you re-create a full backup

after disk defragmentation.

If you lose an incremental backup version or it becomes corrupted, all later incremental backup versions will be

unusable.

Deleting backups and backup versions

You may want to delete backups and backup versions you no longer need. Acronis True Image Home

2011 Netbook Edition stores information on the backups in a metadata information database.

Therefore, deleting unneeded backup files by using Windows Explorer will not delete information

about these backups from the database, and Acronis True Image Home 2011 Netbook Edition will

consider that they still exist.

This will result in errors when the program tries to perform operations on the backups that no longer

exist. So you must only remove obsolete backups and backup versions by using the tools provided by

Acronis True Image Home 2011 Netbook Edition.

To delete an entire backup:

On the main screen, find the corresponding backup box, click Operations, and then click Delete

backup.

When you delete an entire backup, all its versions will be deleted as well.

To delete a specific backup version:

1. On the main screen, find the corresponding backup box, click Explore and recover or Explore all

versions.

2. In Backup explorer, right-click the version you want to delete, and then click Delete version.

When you delete a backup version, please remember that this version may have dependent versions.

In this case the dependent versions will be deleted as well, because data recovery from such versions

becomes impossible.

 If you delete a full backup version - the program will also delete all subsequent incremental and

differential versions till the next full version.