Mirroring

RAID-1 achieves redundancy by mirroring data on several disks.

Also, I just started mirroring that on a non-Google service.

She was mirroring herself in the shop window.

The hostess, who played no instrument, but doted upon all, was of opinion that an executant should 'aim at mirroring his own nature in his interpretation of a tone-poem'; whereupon another lady threw out remarks on 'subjective interpretation', confessing her preference for a method purely 'objective'.

Spenser has an intimate feel for Vergilian intratextuality, the mirrorings and repetitions that create patterns of likeness and difference, reaching over the whole text and linking images, motifs, and persons.