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ATIH 2012 partition backup space issue

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I upgraded one of my PC's from ATIH 2010 to ATIH 2012 over the weekend and found a possible problem with the parition backup and was wondering if anyone else has seen the same thing. The PC is running Windows 7 Home Premium 64-bit with a RAID-0 (striping) on two 300GB Maxstor SATA II 300GBs drives. The drive contains only 1 partition and Windows reports it is using 369GB of to 600GB of space. This figure includes the page file and a hibernate file.

I back up to an external 1GB HDD (which I also use to backup my other PC). Once both systems have been backed up, each with a partition backup and a full backup, there is usually around 100GB of free space on the drive. This free space is used for weekly incremental backups of each PC.

The problem is with the size of the .tib file created from the partition backup. I noticed that after I ran the partition backup the tib file was 407GB. I verified that the program settings matched the settings in the 2010 version (i.e. normal compression, backup sector by sector disabled, etc.). The size of the tib file is approximately 100GB larger than the tib file created by the 2010 version which I verified by mounting my second external drive and looking at the file size.

Since I can't live with the partition backup using almost 100GB more storage space, I uninstalled 2012 and reinstalled 2010. I deleted the tib file created with 2012 and backed up the partition with 2010. The resulting tib file is 315GB.

Does anyone know why the 2012 version is requiring the extra space? Is there an option that I can set to reduce the size of the output file? I thought of changing the compression level but assumed that 'normal' on both ATIH 2010 and ATIH 2012 should yield similar file sizes.

I may ask for a refund as the only reason I purchased the upgrade was because of the price (about $30 per license). I don't have ANY issues with the 2010 version.

Harley

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The first place I would look would be the file exclusions within the 2012 backup task. The size difference would amount to about 150GB of consumed space. If you have the actual 2012 backup, you could so some checking of the actual contents. Do you have any really backup files on the drive created by other programs, etc.

I verified that all of the options between the 2 versions of the program were identical. They both had the same exclusion list, the same compression level, etc.

No, there are no backup files on the source disk. I no longer have the backup copy taken with 2012 as I needed to get that PC backed up, my wife needed to use it for her homework.

I can see where the size of the output file can be different between the 2 versions of the program, but I don't understand why the one from the 2012 version is larger than the source data - given that the output file is supposed to be compressed.