resilver

verb2

1. •
   To silver again.

   • It often becomes necessary to resilver the small mirror used in a microscope, sextant, or other instrument of precision. — 1939
2. •
   To synchronize the mirror disk of the RAID array with the master disk.

   • To get back to our RAID 0 +1 configuration, disk volume A will be “resilvered” up to disk B, which runs at the current point in time. — 2010