safeguarding root drive

I have root drive which i want to guard against possible hard disk loss. How can backup and restore the all user created , filesystem , mount points , meta devices if at all there be hdd failure . Any pointer to good document would be good help . Ours is solaris 8 .

Several paths:

  1. mirror root disk (for example with Solaris volume manager)
  2. Backup with ufsdump to another server (ufsdump 0f - / > /net/server/my_backup/root.dump and so on for others filesystems like var, opt)
  3. Backup with tar to another server (cd /; tar cf - / > /net/server/my_backup/root.tar )
  4. Use any backup software like Veritas NetBackup, Legato and tape drive