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Guardian
Learn how Guardian provides comprehensive asset inventory and network visibility for OT and IoT environments.
Maintenance Guide
Information about the maintenance tasks of Guardian, to help you administer and maintain the solution in a production environment.
Introduction
System overview
The Nozomi Networks solution includes partitions and a filesystem structure, along with core system services to help administer and maintain the solution in a production environment.

Guardian
Learn how Guardian provides comprehensive asset inventory and network visibility for OT and IoT environments.
- Introduction
  An overview of Guardian.
- Installation Guide
  Information and resources on how to install Guardian, and the different options and settings that are available.
- Administrator Guide
  Information and resources about the Administration section of Guardian, and the tasks that you can do in this part of the software.
- User Guide
  Information and resources about the main features of Guardian, and the tasks that you can do from the user interface (UI).
- Maintenance Guide
  Information about the maintenance tasks of Guardian, to help you administer and maintain the solution in a production environment.
  - Introduction
    - System overview
      The Nozomi Networks solution includes partitions and a filesystem structure, along with core system services to help administer and maintain the solution in a production environment.
    - Core services
      The system services used for proper configuration and troubleshooting.
  - Backup and Restore
  - Reboot and Shutdown
  - Software update and rollback
  - Reset
  - Miscellaneous
- Print format documentation
  A list of all the print-format documentation that is available for Guardian.

System overview

The Nozomi Networks solution includes partitions and a filesystem structure, along with core system services to help administer and maintain the solution in a production environment.

Table 1. Partition and filesystem layout
N2OS - First partition (/)	Main partition that includes a copy of the operating system. The operating system runs from this partition. Two different partitions deliver fast-switch between a running release and the new version.
N2OS - Second partition (/)	Partition that coordinates with the first partition to provide reliable update paths.
OS Configuration partition (/cfg)	Partition on which files are copied at the start of the bootstrap process. Contains low-level operating system (OS) configuration files, such as network configurations, shell admin users, etc
Data partition (/data)	Partition that contains all user data, such as learned configuration, user-imported data, traffic captures, and persistent database.

Partitions — Figure 1. Partitions

The data partition includes these sub-folders:

cfg: Includes all automatically learned and user-provided configurations. Two main configuration files are stored here:
- n2os.conf.gz: For automatically learned configurations
- n2os.conf.user: For additional user-provided configurations
data: Working directory for the embedded relational database, used for all persistent data
traces: Includes all traces, which are rotated when necessary
rrd: Includes aggregated statistics, which is used for traffic, among others