MultiPar does archival-grade file verification and repair to protect files from all forms of loss or corruption. Backups alone are not enough because data will gradually "rot" without MultiPar. Data loss can be caused by errors in backup copying, deletion, software bugs, hardware errors, viruses, tampering, etc. MultiPar can restore data even if some files are completely erased. MultiPar supports fast multicore processors, and nested folders. MultiPar replaces QuickPar. MultiPar's GUI is from the look and feel of QuickPar.
|Download||What is it?||Checksums|
|MultiPar1302_setup.exe||Installer. This is what you want.||
|MultiPar1302.zip||Files only, for experts.||
|MultiPar_par2j_1302.7z||par2j (command line) source code, for experts.||
How to use MultiPar
The screenshot above shows you what some typical settings might look like. Usually, the only things you need to pay attention to are the block count slider, and the redundancy slider. Most of the time 10% redundancy is ideal. If you're protecting a huge amount of data that changes occasionally, it will be faster to use only 1% redundancy each time you need to generate new par2 files. If your files change, you will need new par2 files to protect them. It is not possible to update par2 files.
After the block count and the redundancy, the next thing you might want to pay attention to is the efficiency. The higher the better, but it's not nearly as important as the redundancy, so don't worry if the efficiency numbers seem low. In general, the best way to choose your MultiPar settings is to select the redundancy you want, and then move the block count slider to find the "sweet spot" that optimizes efficiency without changing your redundancy.When you're satisfied with your settings, click "Create".
- Use 2 methods to verify important data. You will make mistakes, hardware has errors, and software has bugs.
- Use HashCalc for simple, convenient checksums.
- Use Corz Checksum for fast verification of lots of files.
- Use MultiPar to repair data errors when Corz Checksum finds them.
- Use FastCopy's checksum feature to verify copy operations, especially when moving files to another drive.
- Backups are useless without verification.
- ViceVersa Software can do checksums and versioning.
- SyncTrayzor makes it easy to use Syncthing.
- Get Cygwin and install rsync to become a file verification wizard. Also helpful are: tmux, openssh, cron (Vixie's cron), and a scripting language like Python or Lua (don't use shell scripts).