> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/xsoar-6-administrator-guide/6.12/onboard-cortex-xsoar/onboarding-in-cortex-xsoar/disaster-recovery-and-live-backup/host-names-dns-and-disaster-recovery.md). # Host Names, DNS, and Disaster Recovery Consider the following about host names, DNS and DR: * When configuring Live Backup, each Cortex XSOAR server should have its own unique host name and IP address. * You may require for analysts to always navigate to the same host name when accessing Cortex XSOAR. In this scenario, configure a separate DNS record which points to the active Cortex XSOAR server. In the event of a server failover, you are required to manually repoint this DNS record to the IP of the newly-active Cortex XSOAR server. * It is critical that the TTL of the DNS record be set to a zero value. If it is higher, analysts are not able to access the active server using the shared host name until the TTL of the record expires and the DNS record is refreshed in the cache. This could take more than an hour. * If you do not require a single URL to access Cortex XSOAR, when a server failover occurs, you might point your browser to the URL of the newly-active Cortex XSOAR server. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://cortex-docs.paloaltonetworks.com/xsoar-6-administrator-guide/6.12/onboard-cortex-xsoar/onboarding-in-cortex-xsoar/disaster-recovery-and-live-backup/host-names-dns-and-disaster-recovery.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.