Backup WinRAR

One-minute read
windows • backup

Using WinRar as a backup tool.

Three backup mode (full, incremental and differential) described down are based upon Archive attribute.

Main options and how to restore:

  • Full
    • RAR option: -ac
    • Restore order: just restore the FULL backup
  • Incremental
    • RAR option: -ac -ao
    • Restore order: restore first from last FULL backup and then all incremental from oldest to latest one
  • Differential
    • RAR option: -ao
    • Restore order: restore first from last FULL backup and then only the last differential backup

Examples

  • winrar.exe a -se -rr3% -ac -ag+YYYYMMDD_full_ -k -m5 -ms -os -r -ep1 e:\mydoc.rar @mydocpath.txt

  • winrar.exe a -se -rr3% -ac -ag+YYYYMMDD_incr_ -k -m4 -ms -os -r -ep1 -ac -ao e:\mydoc.rar @mydocpath.txt

  • winrar.exe a -se -rr3% -ag+YYYYMMDD_diff_ -k -m4 -ms -os -r -ep1 -ao e:\mydoc.rar @mydocpath.txt

  • .\Rar a -ac -ao -ma5 -htb -agYYYYMMdd-hhmmss -r “%USERPROFILE%\Desktop\testbkp-.rar” w:\temp\test

RAR Options

  • -se = Create solid archive
  • -rr = add data recovery record
  • -ac = Clear Archive attribute after compression or extraction
  • -agxxxxxxxxxxxx
  • -k = Lock archive
  • -m<0..5> = Set compression level (0-store…3-default…5-maximal)
  • -ms
  • -os = Save NTFS streams
  • -r
  • -ao = add only the files with archive bit on
  • -ep1 Exclude base directory from names
  • -qo+ = Add quick open information

REF: https://rareelement.tripod.com/winrar_sk.htm