ACRONIS Backup & Recovery 10 Advanced Server User's Guide Page 388

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388 Copyright © Acronis, Inc., 2000-2009
and the foreign disks so that they form a single entity. A foreign group is imported as is (will have the
original name) if no disk group exists on the machine.
For more information about disk groups please refer to the following Microsoft knowledge base
article:
222189 Description of Disk Groups in Windows Disk Management
http://support.microsoft.com/kb/222189/EN-US/
Dynamic disk
A hard disk managed by Logical Disk Manager (LDM) that is available in Windows starting with
Windows 2000. LDM helps flexibly allocate volumes on a storage device for better fault tolerance,
better performance or larger volume size.
A dynamic disk can use either the master boot record (MBR) or GUID partition table (GPT) partition
style. In addition to MBR or GPT, each dynamic disk has a hidden database where the LDM stores the
dynamic volumes' configuration. Each dynamic disk holds the complete information about all
dynamic volumes existing in the disk group which makes for better storage reliability. The database
occupies the last 1MB of an MBR disk. On a GPT disk, Windows creates the dedicated LDM Metadata
partition, taking space from the Microsoft Reserved Partition (MSR.)
Disk 1 MBR
LDM
database
1 MB
Disk 2 Protec-
tive
MBR
GPT Microsoft
Reserved
Partition (MSR)
LDM
database
GPT
LDM Metadata
partition
1 MB
Dynamic disks organized on MBR (Disk 1) and GPT (Disk 2) disks.
For more information about dynamic disks please refer to the following Microsoft knowledge base
articles:
Disk Management (Windows XP Professional Resource Kit) http://technet.microsoft.com/en-
us/library/bb457110.aspx
816307 Best practices for using dynamic disks on Windows Server 2003-based computers
http://support.microsoft.com/kb/816307
Dynamic group
A group of machines (p. 390) which is populated automatically by the management server (p. 391)
according to membership criteria specified by the administrator. Acronis Backup & Recovery 10 offers
the following membership criteria:
Operating system
Active Directory organization unit
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