User manual
Table Of Contents
- 1 Introducing Acronis Backup
- 2 Getting started
- 3 Understanding Acronis Backup
- 3.1 Owners
- 3.2 Credentials used in backup plans and tasks
- 3.3 User privileges on a managed machine
- 3.4 List of Acronis services
- 3.5 Full, incremental and differential backups
- 3.6 What does a disk or volume backup store?
- 3.7 Backup and recovery of dynamic volumes (Windows)
- 3.8 Support for Advanced Format (4K-sector) hard disks
- 3.9 Compatibility with encryption software
- 3.10 Support for SNMP
- 3.11 Support for Windows 8 and Windows Server 2012
- 3.12 Support for UEFI-based machines
- 4 Backup
- 4.1 Back up now
- 4.2 Creating a backup plan
- 4.2.1 Selecting data to back up
- 4.2.2 Access credentials for source
- 4.2.3 Source files exclusion
- 4.2.4 Backup location selection
- 4.2.5 Access credentials for archive location
- 4.2.6 Backup schemes
- 4.2.7 Archive validation
- 4.2.8 Backup plan's credentials
- 4.2.9 Label (Preserving machine properties in a backup)
- 4.2.10 Sequence of operations in a backup plan
- 4.2.11 Why is the program asking for the password?
- 4.3 Simplified naming of backup files
- 4.3.1 The [DATE] variable
- 4.3.2 Backup splitting and simplified file naming
- 4.3.3 Usage examples
- 4.3.3.1 Example 1. Daily backup replacing the old one
- 4.3.3.2 Example 2. Daily full backups with a date stamp
- 4.3.3.3 Example 3. Hourly backups within a day
- 4.3.3.4 Example 4. Daily full backups with daily drive swaps
- 4.3.3.5 Example 5. Daily backups with weekly drive swaps
- 4.3.3.6 Example 6. Backups within working hours
- 4.4 Scheduling
- 4.5 Replication and retention of backups
- 4.6 How to disable backup cataloging
- 4.7 Default backup options
- 4.7.1 Additional settings
- 4.7.2 Archive protection
- 4.7.3 Backup cataloging
- 4.7.4 Backup performance
- 4.7.5 Backup splitting
- 4.7.6 Compression level
- 4.7.7 Disaster recovery plan (DRP)
- 4.7.8 E-mail notifications
- 4.7.9 Error handling
- 4.7.10 Event tracing
- 4.7.11 Fast incremental/differential backup
- 4.7.12 File-level backup snapshot
- 4.7.13 File-level security
- 4.7.14 Media components
- 4.7.15 Mount points
- 4.7.16 Multi-volume snapshot
- 4.7.17 Pre/Post commands
- 4.7.18 Pre/Post data capture commands
- 4.7.19 Replication/cleanup inactivity time
- 4.7.20 Sector-by-sector backup
- 4.7.21 Task failure handling
- 4.7.22 Task start conditions
- 4.7.23 Volume Shadow Copy Service
- 5 Recovery
- 5.1 Creating a recovery task
- 5.2 Recovering BIOS-based systems to UEFI-based and vice versa
- 5.3 Acronis Active Restore
- 5.4 Bootability troubleshooting
- 5.5 Reverting a Windows system to its factory settings
- 5.6 Default recovery options
- 6 Conversion to a virtual machine
- 7 Storing the backed up data
- 8 Operations with archives and backups
- 9 Bootable media
- 10 Disk management
- 10.1 Supported file systems
- 10.2 Basic precautions
- 10.3 Running Acronis Disk Director Lite
- 10.4 Choosing the operating system for disk management
- 10.5 "Disk management" view
- 10.6 Disk operations
- 10.7 Volume operations
- 10.8 Pending operations
- 11 Protecting applications with disk-level backup
- 12 Administering a managed machine
- 12.1 Backup plans and tasks
- 12.2 Log
- 12.3 Alerts
- 12.4 Changing a license
- 12.5 Collecting system information
- 12.6 Adjusting machine options
- 13 Cloud backup
- 13.1 Introduction to Acronis Cloud Backup
- 13.1.1 What is Acronis Cloud Backup?
- 13.1.2 What data can I back up and recover?
- 13.1.3 How long will my backups be kept in the cloud storage?
- 13.1.4 How do I secure my data?
- 13.1.5 Supported operating systems and virtualization products
- 13.1.6 Backup and recovery FAQ
- 13.1.6.1 What backup methods are available?
- 13.1.6.2 What recovery methods are available?
- 13.1.6.3 Is the cloud storage available under Acronis bootable media?
- 13.1.6.4 What if a network connection is lost during cloud backup or recovery?
- 13.1.6.5 What happens if I run out of space?
- 13.1.6.6 What is the cleanup task for?
- 13.1.6.7 How do I make a recovered machine recognize its subscription?
- 13.1.7 Initial Seeding FAQ
- 13.1.7.1 What is Initial Seeding?
- 13.1.7.2 Why would I want to use Initial Seeding?
- 13.1.7.3 Is Initial Seeding a paid service?
- 13.1.7.4 What types of hard drive can I use for Initial Seeding?
- 13.1.7.5 Can I send more than one backup under a single Initial Seeding license?
- 13.1.7.6 Can I send backups taken from a number of machines on a single hard drive?
- 13.1.7.7 How to buy an Initial Seeding license?
- 13.1.7.8 How do I perform initial seeding?
- 13.1.7.9 How to package a hard drive for shipment?
- 13.1.7.10 How do I track an Initial Seeding order status?
- 13.1.8 Large Scale Recovery FAQ
- 13.1.8.1 What is Large Scale Recovery?
- 13.1.8.2 Why would I use Large Scale Recovery?
- 13.1.8.3 Do I need to perform initial seeding to be able to use Large Scale Recovery?
- 13.1.8.4 Is Large Scale Recovery a paid service?
- 13.1.8.5 Can I perform large scale recovery on a different machine?
- 13.1.8.6 Can I obtain backups taken from a number of machines on a single hard drive?
- 13.1.8.7 How to buy a Large Scale Recovery license?
- 13.1.8.8 How do I track a Large Scale Recovery order status?
- 13.1.8.9 How to perform large scale recovery?
- 13.1.9 Subscription lifecycle FAQ
- 13.1.9.1 How do I access my account management webpage?
- 13.1.9.2 Where do I find the subscriptions that I purchased?
- 13.1.9.3 When does my subscription begin?
- 13.1.9.4 What happens when my subscription expires?
- 13.1.9.5 How do I renew a subscription?
- 13.1.9.6 What is the “Group” column for?
- 13.1.9.7 Can I revoke a subscription from a machine?
- 13.1.9.8 Can I cancel my subscription?
- 13.2 Where do I start?
- 13.3 Choosing a subscription
- 13.4 Configuring proxy settings
- 13.5 Checking the firewall settings
- 13.6 Activating cloud backup subscriptions
- 13.7 Retrieving files from the cloud storage by using a web browser
- 13.8 Limitations of the cloud storage
- 13.9 Terminology reference
- 13.1 Introduction to Acronis Cloud Backup
- 14 Glossary
- Acronis Active Restore
- Acronis Plug-in for WinPE
- Acronis Secure Zone
- Acronis Startup Recovery Manager (ASRM)
- Activity
- Agent (Acronis Backup Agent)
- Archive
- Backup
- Backup archive (Archive)
- Backup operation
- Backup options
- Backup plan (Plan)
- Backup scheme
- Bootable agent
- Bootable media
- Built-in group
- Cataloging
- Centralized backup plan
- Centralized management
- Centralized task
- Centralized vault
- Cleanup
- Console (Acronis Backup Management Console)
- Consolidation
- Data catalog
- Deduplicating vault
- Deduplication
- Differential backup
- Direct management
- Disaster recovery plan (DRP)
- Disk backup (Image)
- Disk group
- Dynamic disk
- Dynamic group
- Dynamic volume
- Encrypted archive
- Encrypted vault
- Export
- Full backup
- GFS (Grandfather-Father-Son)
- Image
- Incremental backup
- Indexing
- Local backup plan
- Local task
- Logical volume
- Machine
- Managed machine
- Managed vault
- Management server (Acronis Backup Management Server)
- Media builder
- Personal vault
- Plan
- Recovery point
- Registered machine
- Registration
- Replenishable pool
- Replication
- Retention rules
- Single-pass backup
- Static group
- Storage node (Acronis Backup Storage Node)
- Task
- Tower of Hanoi
- Unmanaged vault
- Validation
- Vault
- Virtual machine
- WinPE (Windows Preinstallation Environment)
25 Copyright © Acronis International GmbH, 2002-2016
Differential backup
A differential backup stores changes to the data against the latest full backup. You need access to
the corresponding full backup to recover the data from a differential backup. A differential backup is
most useful when:
you are interested in saving only the most recent data state
the data changes tend to be small as compared to the total data size.
The typical conclusion is: "differential backups take longer to do and are faster to restore, while
incremental ones are quicker to do and take longer to restore." In fact, there is no physical difference
between an incremental backup appended to a full backup and a differential backup appended to
the same full backup at the same point of time. The above mentioned difference implies creating a
differential backup after (or instead of) creating multiple incremental backups.
An incremental or differential backup created after disk defragmentation might be considerably larger than
usual because defragmentation changes file locations on the disk and the backup reflects these changes. It is
recommended that you re-create a full backup after disk defragmentation.
The following table summarizes the advantages and shortcomings of each backup type as they
appear based on common knowledge. In real life, these parameters depend on numerous factors
such as the amount, speed and pattern of data changes; the nature of the data, the physical
specifications of the devices, the backup/recovery options you set, to name a few. Practice is the
best guide to selecting the optimal backup scheme.
Parameter
Full backup
Differential backup
Incremental backup
Storage space
Maximal
Medium
Minimal
Creation time
Maximal
Medium
Minimal
Recovery time
Minimal
Medium
Maximal
3.6 What does a disk or volume backup store?
A disk or volume backup stores a disk or a volume file system as a whole and includes all of the
information necessary for the operating system to boot. It is possible to recover disks or volumes as a
whole from such backups as well as individual folders or files.
Windows
A volume backup stores all files and folders of the selected volume independent of their
attributes (including hidden and system files), the boot record, the file allocation table (FAT) if it
exists, the root and the zero track of the hard disk with the master boot record (MBR).
A disk backup stores all volumes of the selected disk (including hidden volumes such as the
vendor's maintenance partitions) and the zero track with the master boot record.
The following items are not included in a disk or volume backup (as well as in a file-level backup):
The swap file (pagefile.sys) and the file that keeps the RAM content when the machine goes
into hibernation (hiberfil.sys). After recovery, the files will be re-created in the appropriate
place with the zero size.
Windows shadow storage. The path to it is determined in the registry value VSS Default
Provider which can be found in the registry key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\BackupRestore\FilesNotToBa
ckup. This means that in operating systems starting with Windows Vista, Windows Restore
Points are not backed up.