ACRONIS True Image Home 2011 Guía de usuario descargar pdf (Pagina 11)

Snapshots

Acronis True Image Home 2011 uses "snapshot" technology which permits you to create system

partition backups even while running Windows with files open for reading and writing. Rebooting the

computer is not necessary.

Once the program starts the partition backup process, it temporarily freezes all the operations on the

partition and creates its "snapshot". Snapshot creation usually takes just several seconds. After that,

the operating system continues working as the imaging process is under way.

The Acronis driver also continues to keep the point-in-time view of the partition. Whenever the

driver sees a write operation directed at the partition, it checks whether these sectors are already

backed up. If they are not, the driver saves the data on the sectors to be overwritten to a special

buffer. Overwriting will then proceed.

All of the partition sectors of the point-in-time will be backed up intact and an exact "image" of the

partition will be created.

Backup file format

Acronis True Image Home 2011 usually saves backup data in the proprietary tib format using

compression. This reduces the amount of needed storage space. It also allows for backward

compatibility with the previous Acronis True Image Home 2011 version.

When creating a tib file, the program calculates checksum values for data blocks and adds these

values to the data being backed up. These checksum values allow for the verification of data

integrity.

The data from tib file backups can be recovered only through the Acronis True Image Home 2011

program. This may be done in a Windows or in the recovery environment.

However, Acronis True Image Home 2011 is also able to save data in the well-known zip format. This

allows you to retrieve files from backups anywhere without using Acronis True Image Home 2011.

For example, you can back up files to a USB stick and retrieve files from such backups on your

notebook without installing Acronis True Image Home 2011. The most widely used operating systems

Microsoft Windows and Mac OS X, have built-in support for the zip file format.

Acronis Nonstop Backup uses a special hidden storage for data and metadata. The backed up data is

compressed and split into files of about 1 GB. These files also have a proprietary format and the data

they contain can be recovered only with the help of Acronis True Image Home 2011.

Backup validation

The backup validation feature allows you to confirm that your system can be recovered. As

mentioned above, the program adds checksum values to the data blocks being backed up. During

backup validation, Acronis True Image Home 2011 opens the backup file, recalculates the checksum

values and compares those values with the stored ones. If all compared values match, the backup file

is not corrupted and there is a high probability that the backup can be successfully used for data

recovery.

We recommend that validation of system partition backups take place when booting from a rescue

media.

Acronis True Image Home 2011 lets users of Windows 7 Enterprise and Window 7 Ultimate ensure

that they will be able to boot after a recovered system partition. The program allows you to boot

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ACRONIS True Image Home 2011 Guía de usuario Pagina 11