5 Copyright © Acronis, Inc., 2000-2010For effective use of the storage space, you have the option to set up the "Delete backups older than"retention rule.ExampleYou might want to use the following backup strategy for a file server.Back up the critical files twice a day on a schedule. Set the retention rule "Delete backups olderthan" 7 days. This means that after every backup the software will check for backups older than 7days and delete them automatically.Run backup of the server's system volume manually as required. For example, after the operatingsystem updates. Manually delete the backups that you do not need.1.4 How to secure my data?Backups can be encrypted using the Advanced Encryption Standard (AES) cryptographic algorithmand the password you set. This guarantees that your data is not accessed by anyone else.1.5 Backup and recovery FAQThis section answers questions related to backup and recovery processes.1.5.1 What backup methods are available?Full and incremental backup methods are available through the following backup schemes.Back up now (immediate start) or Back up later (postponed start). You can select either the full orincremental backup method. On the first task run a full backup is created. If you run the backup taskagain, the selected backup method will be applied. This way, you will obtain either a new full backup,or an incremental one. Since full backups take more storage space, Acronis recommends that youchoose incremental backup if you want to run backups manually.Simple (start on schedule). The first backup is full, the later backups are incremental. With thisbackup scheme, you can set up a retention rule to automatically delete old backups.An additional backup scheme that is available only for online storage is Initial seeding. This is theBack up now scheme using local destination and full backup method. To use this scheme, you need alicense for the Initial Seeding (p. 6) service.1.5.2 Is the online storage available under Acronis bootablemedia?Recovery from Acronis Online Backup Storage is available but backup to the storage is not.1.5.3 Can I use Acronis Universal Restore when recovering asystem from the online storage?Yes. Acronis Universal Restore is always available when recovering a system from the online storage.Using Acronis Universal Restore when recovering from other types of storage will require a separatelicense.