CA ARCserve D2D incrementally backs up only those blocks that have changed since the last successful backup. The changed block would be monitored by CA ARCserve D2D and would be backed up during the next scheduled incremental backup. There are various reasons due to which data change can occur, in this document we would see some reasons why the incremental backup can be large.
Many of the following tasks could have been scheduled, so new data gets added or changed based on the schedule.
Some reasons for the Incremental Backups to be large:-
Note:- In the check list mentioned below, volume or drive refers to the drive for which the incremental backups are large. Say for example, if the machine has two drives C:\ and D:\, and if the incremental backups for D:\ is large. Then check the below mentioned points on the D:\ Drive.
1) The data on the drive has changed or new data created.
2) Check if the disk defragmentation was run on the disk. Disk Defragmentation rearranges the data on the hard disk. As the data gets rearranged, lots of blocks changes; the changed block would be monitored by CA ARCserve D2D and would be backed up during the next scheduled incremental backup.
3) Check if the native Windows Backup or native SQL backup is using the drive as the backup destination to store the backed up data.
4) Check if there are any other Backup Applications installed and if they are using the drive as the backup destination to store the backed up data.
5) If CA ARCserve RHA is installed, check if the Spool Folder for CA ARCserve RHA is configured on this volume.
6) Check if this volume is configured as the Storage Area for the Shadow Copies of this volume or any other volume.
7) Check if the volume is configured as the backup destination for CA ARCserve D2D installed on any other machine.
8) Check if there are any File System Device or Deduplication Device used by CA ARCserve Backup has been configured on this volume.
9) If none of the above are applicable, then perform a windows search for files and folders on the volume where the size of the backup is large. Search based on the modified date and provide a date range, this would list all the files which were modified within a specified date range. You can select Search option from Start->Search->For Files Or Folders...->
Windows XP - Refer http://support.microsoft.com/kb/308895
How to perform Advanced Search in Windows 2008 Server?
-Open Windows Explorer->Select the Drive on which the search has to be performed.
-On the top right side you would find the Search Box. Type in *.* if you want to search for all files. If you know the extension of files for the specific application for which you want to perform the Search, then type *.Extension of file (Ex:-*.D2D to search ARCserve D2D files). To do an Advanced Search based on modified date, click on the drop down next to 'Date modified' as shown below.
-Select the Date for which you want to do the Advanced Search. This would list the files which were modified on a specific date.