64KB block level backup outlook.pst

Hello,

First of all, I love the Comodo program’s.

With Comodo Backup I want to make a daily backup of my 2,5 GB outlook.pst file to a networkdrive or ftp server.
I want to use the terrific function of 64KB block backup and preferably with a “Simple copy” backup format.

Unfortunately every time Comodo Backup, backup’s the entire outlook.pst file (2,5 GB). I have tried many options (differential, incremental / CBU File, Simple Copy) but no difference.

Can someone tell me how I can get the 64KB block level backup to work?

Unfortunately I don’t have a debug file.

Hi

Incremental simple copy doesn’t backup at 64KB level.
This is just for CBU file incremental or differential.
You said you tried CBU file backup incremental / differential.
What is the size of the full backup and the size of the incremental or differential?

Thanks

@Emanuel
Thank you for your reply.
To find out that you can only use cbu file to use the 64KB level backup, was already a long way.
I understand now why, but I couldn’t find it on the Comodo support website.

I tested the incremental backup with CBU backup.

  • The first time in completely backup’s my 1 GB Outlook .pst file.
  • I start Outlook, recieve one e-mail (100 KB maybe) en close Outlook again…
  • I run the saved backup project (as described above) and it backups 19 MB.
  • I start Outlook, no new e-mail comes in, and close Outlook again.
  • I run the saved backup project and it backups 1 GB!
  • I start Outlook, 3 new e-mail come in (at least 1 MB altogether), and close Outlook again.
  • I run the saved backup project and it backups 19 KB!
  • I start Outlook, 1 new e-mail come in (at least 100 KB), and close Outlook again.
  • I run the saved backup project and it backups 19 KB!
    Every time I run the backup now is backups only 19 KB.
    That’s not really reliable…

The third time when the size of the backup was 1GB probably outlook.pst file might have been defragmented by Outlook or something.
CB just compares block 1 from source file with checksum for block 1 in destination cbu file, block 2 from source file with checksum for block 2, … block N with checsum for block N… etc
If all are different then the entire file will be backed-up again.

Thanks