Explains how the health check feature audits the backup ISO image on Cisco NCS 1014 to support error-free booting during disaster recovery.
Backup ISO image health checks are disaster recovery checks that
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ensure error-free booting of the NCS 1014 chassis during disaster recovery operations,
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audit the chassis SSD content against the running software in the background every 12 hours to detect corruption, and
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recover a corrupted ISO image by copying it from the backup location.
Backup ISO image storage and recovery
NCS 1014 has a partition for disaster recovery where the backup ISO image is stored. The backup ISO image is stored in the chassis SSD.
The chassis SSD content is audited against the running software by the install process in the background every 12 hours to detect corruption. If the ISO image is corrupted, the software will recover it by copying from the backup location.
If the software fails to synchronize with the chassis SSD, then the Disaster Recovery ISO Image Corruption alarm is raised. See the Troubleshooting Guide for Cisco NCS 1014 to clear the alarm.