OP5 Monitor ["OP5 Monitor"]
["Technical Reference"]

# System requirements

## Overview

This page lists the hardware and software requirements for using OP5 Monitor. It is important that you also review the 8.x compatibility matrix.

## Deployment recommendations

If you plan to use extensive logging, the preferred architecture is to split the setup over two separate servers due to I/O, processor, and memory requirements.

Note: Server numbers are based on one host running ten service checks, with a default `check_interval` of 5 minutes.

OP5 Monitor Server environment | Processor | Hard drive | RAM
--- | --- | --- | ---
Entry — up to 300 hosts | 4 cores — 1 x Xeon Bronze | 1 x 100 GB Flash | 8 GB
Standard — up to 2000 hosts | 8 cores — 1 x Xeon Silver | 1 x 200 GB Flash | 16 GB
Large — up to 10000 hosts | 16 cores — 2 x Xeon Silver | 1 x 300 GB Flash | 24 GB

Note: Over 2000 hosts, we recommend involving ITRS at the topology design stage.

## SMS gateway recommendations

We recommend the following SMS gateways:

- Telic HT910 G — serial
- Telic LT910 E — serial
- AMIT IDG500 — serial and Ethernet
- Moxa NPort 5110 or 5100 — serial to Ethernet converter, separate serial SMS gateway needed

Note: OP5 Monitor uses SMS Server Tools 3 for SMS communication. Refer to the SMS Server Tools 3 documentation and the vendor documentation for your SMS Gateway for hardware support.

## Supported browsers

For up-to-date information on supported browsers, see Browser support in 8.x compatibility matrix.

## Supported operating systems

For up-to-date information on supported operating systems, see Operating system support in 8.x compatibility matrix.

### Security-Enhanced Linux

When Security-Enhanced Linux (SELinux) is running in `Enforcing` mode, it may deny certain functions of OP5 Monitor depending on the implemented configurations and policies.

To see which functions SELinux denies, check the audit log. The log is typically located in `/var/log/audit.log`, where the log type entry is `AVC`. The audit log provides the details of any denied access. For example, denied connection to the TCP port.

If you experience issues related to this mode, you may opt to disable SELinux, or create policy modules to grant the required access. Please contact your administrator or security team for assistance.

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