jallman Posted February 24, 2003 Report Share Posted February 24, 2003 I am having problems with a nightly backup job. Each night, we recycle and back up about 112GB of data to a file backup set. The data being backed up is on the same hard drive as the file backup set. My average transfer rate for the job is 387MB/MIN. Calculated out, that should take about 5 hours to complete, it is taking closer to 11 hours. Compression is off, verification is on on the job. The hard drive that the source files and the destination backup set is on is a windows 2000 striped set made of 3 120GB ultraATA 100 Drives. Any suggestions would be helpful Link to comment Share on other sites More sharing options...
AmyJ Posted February 25, 2003 Report Share Posted February 25, 2003 The Operations log will give more detailed performance data. A backup goes through a number of steps from beginning to end Scanning Matching Copying Creating Snapshot Backing up NTFS permissions (if applicable) Comparing Each of these steps add up to the total time involved to complete the backup. The most time consuming steps are usually copying, comparing, and permissions. Retrospect must copy each and every file, and then compare each and every file to ensure that it was copied properly. The compare pass is typically faster then the copy pass, however this can vary by configuration. Retrospect uses Microsoft API's to backup NTFS permissions, which is done seperately from the file copy - turning off permissions in the script options may speed up the backup. Link to comment Share on other sites More sharing options...
jallman Posted February 26, 2003 Author Report Share Posted February 26, 2003 Does the verify process just do a checksum compare on the files, or actually compare each file individually? Link to comment Share on other sites More sharing options...
Mayoff Posted February 26, 2003 Report Share Posted February 26, 2003 Verify of a local volume is a byte by byte compare. Verify of clients on the network uses a checksum by default but can be changed to byte by byte. Link to comment Share on other sites More sharing options...
jallman Posted February 28, 2003 Author Report Share Posted February 28, 2003 Is there any way to change local volume verification to checksum? Turning off verification has taken my backup job from 10 hours to under 5. We would like to perform at least some verification, however. Link to comment Share on other sites More sharing options...
AmyJ Posted February 28, 2003 Report Share Posted February 28, 2003 The verification type cannot be changed for the local machine. Link to comment Share on other sites More sharing options...
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