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Hierarchy Level

[edit system]

Release Information

Statement introduced before JUNOS Release 7.4.


Configure the hard disk to automatically mirror the contents of the CompactFlash card. The hard disk maintains a synchronized mirror copy of the CompactFlash card contents. Data written to the CompactFlash card is simultaneously updated in the mirrored copy of the hard disk. If the CompactFlash card fails to read data, the hard disk automatically retrieves its mirrored copy of the CompactFlash card. This command is not available on the J Series routers.

Caution: We recommend that you disable flash disk mirroring when you upgrade or downgrade the router.

You cannot issue the request system snapshot command while the mirror-flash-on-disk statement is enabled.

Note: After you have enabled or disabled the mirror-flash-on-disk statement, you must reboot the router for your changes to take effect. To reboot, issue the request system reboot command.

Required Privilege Level

system—To view this statement in the configuration.

system-control—To add this statement to the configuration.

Published: 2010-04-26

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