> For the complete documentation index, see [llms.txt](https://docs.vectra.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vectra.ai/operations/backup-restore-dr/legacy-details-prior-to-v8.5/disaster-recovery-process-prior-to-v85.md).

# Disaster recovery process (prior to v8.5)

* In version 8.5 and higher of Vectra Brain software, backup and restore functionality has been updated to be more consistent in how the commands work for the various different options available in backup/restore. As a result, the majority of commands are different in some way.
  * Please see [Backup and Restore for Vectra Brain Appliances (v8.5+)](/operations/backup-restore-dr/backup-and-restore-v85.md) for details.
* The KB you are currently reading will quickly become obsolete as customers update to v8.5+ of Vectra software.
  * Once all customers are on v8.5+, the older KB articles will be archived to help avoid confusion.

This document is intended to provide the process to recover the Vectra® service in the\
event of the failure of the Primary Brain.\
Assumptions:

* Backup (warm spare) brain of equal or comparable scoping is available in another\
  location, accessible to all Vectra appliances deployed.
* DNS TTL for the Vectra domain is set to 120 seconds.
* Backups have been configured on the primary Brain for both Brain-to-Brain, as well as\
  external SCP server

## Attachments

{% file src="/files/kuhbX5MDD5InpXD5UUxg" %}


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