Prerequisites for Performing Secure Erase
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Ensure that all the software images, configurations, and personal data are backed up before performing the secure erase operation.
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Ensure that the device is not in stacking mode as factory reset is supported only in the standalone mode.
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Ensure that there is an uninterrupted power supply when the process is in progress.
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Ensure that you take a backup before you begin the secure erase process.
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Ensure that neither In-Service Software Upgrade (ISSU) nor In-Service Software Downgrade (ISSD) is in progress before starting the secure erase process.