# Installation requirements vtenext 23.08

**1. Minimum Hardware Requirements:**

- RAM: 2 GB
- Hard Disk: 20 GB
- Processor: 2 GHz dual-core

**2. Recommended Hardware Requirements:**

- RAM: 4 GB
- Hard Disk: 80 GB
- Processor: 2 GHz quad-core

**3. Recommended Operating System:**

The recommended operating system for installing vtenext is Ubuntu 20.04 LTS 64-bit Server. On this system, the CRM installs out-of-the-box without the need for specific configurations, except for setting up the parameters in the php.ini file as indicated by the vtenext setup wizard.

**4. Requirements for other Linux operating systems:**

It is possible to install vtenext on other Linux operating systems; specifically, the following must be present:

- php 7.4
- mysql 5.x, 8.0
- apache 2 >= 2.4.13 / nginx

**5. Required PHP modules:**

- curl
- gd
- imagick
- imap
- json
- ldap
- mbstring
- mysql
- xml
- zlib
- zip

**6. Optional PHP modules:**

- apcu
- bcmath

If connectivity to other databases is required, such as Microsoft SQL Server or Oracle, it's necessary to prepare the required libraries (in the case of Ubuntu, php-sybase\* and oci8 libraries). Therefore, it is advisable to have the vtenext application reside on the machine installed with Linux and connect to the Microsoft SQL Server database, naturally installed on a Windows system.

\*Sybase libraries are not available from PHP version 7 onwards. For interfacing with SQL Server using this PHP version, refer to the dedicated manual.

**7. Supported Browsers:**

- Firefox >= 78
- Google Chrome >= 86
- Edge >= 18
- Safari >= 12.1
- Opera >= 69