> For the complete documentation index, see [llms.txt](https://help.sentinelsoftware.com/sentinel-help-center/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates.md).

# Installation & Updates

- [System Overview](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/system-overview.md): System architecture and Connectivity
- [Client VM Requirements](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/client-vm-requirements.md): On-premise VM specs and architecture.
- [Host Server Setup RHEL/CentOS 8](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/host-server-setup-rhel-centos-8.md)
- [Host Server Setup RHEL/CentOS 9](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/host-server-setup-rhel-centos-9.md)
- [Sentinel Install Guide](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/sentinel-install-guide.md)
- [Oracle Database Account](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/oracle-database-account.md)
- [PostgreSQL Backups](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/postgresql-backups.md): Basic steps to create bare minimum backups.
- [Migrating PostgreSql DB](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/postgresql-backups/migrating-postgresql-db.md): Migrate an existing PostgreSQL db to another environme
- [Postgres - Lift and Shift](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/postgresql-backups/postgres-lift-and-shift.md): Moving your existing (old) Sentinel environment to a new server without upgrading PostgreSQL database version.
- [Single Sign-On](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/single-sign-on.md): Single Sign-On Setup
- [Software Updates](https://help.sentinelsoftware.com/sentinel-help-center/installation-and-updates/software-updates.md): Instructions for updating existing Sentinel applications.