What is "Mirror"?

mirror is a catched image of hacked site to keep record.A hacked site can be instantly recovered and there won't be any record of it's being hacked.So to keep a record with catched image of the hacked site is called mirror.Zone-H is a such mirror site that keeps a record and ranks the whole hacker teams status(ranking worldwide) depending on the number of defaces,single ip(server),mass deface etc.also there are more mirror site like add-attack,zone-hc etc.