Snapshots Redux
After you complete the software upgrade and confirm that all hardware and
protocol behavior is as expected, run the request system snapshot
command again to copy the new image to the backup boot media. This step is
important because the backup media is intended to be redundant to the
primary boot media. To be truly redundant, the backup must have the same
JUNOS image as the primary media:
lab@r5-re0> request system snapshot
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