Extent-based backups integrate extent or chunk based technology to speed up backup operations. Extent based backups break down a file into small independent extents, that leads to potentially quicker backups and more resiliency to network disruptions. Extent based backups are helpful if the backup content consists of files that are large in size that may cause the available data streams to remain idle.
The size of an extent depends on the size of the file. A large file is split into small extents and each extent is backed up independently. For example, if a 1 GB file is split into 4 MB size small extents, then 256 extents will be backed up independently.
Extent based backups are automatically applied for files with size greater than or equal to 1 GB.
Benefits
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Faster backups. Large files are backed up using multiple streams that increases the speed of backups.
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Efficient backups. During network disruption, a backup job resumes from the last committed extent when the backup job was interrupted.
Support and Limitations
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Supported only on client computers that use Indexing Version 2.
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Not supported for on-demand backups, ad-hoc backups, and OnePass for UNIX.
Before You Begin
Verify that the File System Core package is installed on your computer.
Procedure
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To the client computer, add the bEnableFileExtentBackup additional setting as shown in the following table.
For more information on creating the additional setting, see Adding or Modifying Additional Settings from the CommCell Console.
|
Property |
Value |
|---|---|
|
Name |
|
|
Category |
FileSystemAgent |
|
Type |
Integer |
|
Value |
1 |