The best replacement for backup is archive.

The best alternatives to backup are rated as following:
★★★★★  archive
★★★★  sync
★★★★  backup
★★★★  copy
★★  system image
★★  raid
★★  back up
★★  sync iphone
★★  differential backup
★  restore
★  image
★  replication
★  clone
★  disaster recovery
★  storage
★  mirror
★  disk backup
★  snapshot
★  incremental backup
★  clone hard drive
★  redundancy
★  incremental
★  time machine
  copy files
  archiving
  raid 1
  synchronization
  differential
  hard drive backup
  back-up
  copying files
  synchronize
  backup exec
  external hard drive
  pending
  restore restart checkpoint file
  computer backup
  photo stream
  overflow
  itunes backup
  cloning
  duplicate
  hot backup
  restore point
  ghost
  memeo
  generator
  disk image
  database backup
  rsync

Your alternative for backup is not listed? Suggest!
Speaking about backup, one probably shouldn't forget about external hard drive.

Other search terms related to backup and their ratings are:
★★★★★ external hard drive
★★★★ syncing iphone
★★★ sync
★★ surge protection
★ truncate
★ updating iphone
★ transaction log
log sql server
password iphone
You have in mind a companion for backup and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of backup in all years. Click on graph for more.
backup
archive
sync