2.1 System requirements
Prev | Chapter 2 Installation | Next

## 2.1 System requirements

The minimum hardware configuration recommended for Kerio MailServer (basic license for 20 users):

- CPU 1 GHz

- 512 MB RAM

- 50 MB free disk space (for the installation)

- 40 GB free disk space for user mailboxes and backups

- For maximum protection of the installed product (particularly its configuration files), it is recommended to use the NTFS file system.

Recommended hardware configuration of the computer where Kerio MailServer will be running:

For 20 — 100 active users

- CPU 2 GHz

- 2 GB RAM

- 160 GB free disk space for user mailboxes and backups

For 100 and more active users

- CPU 2.8 GHz Dual (Quad) Core

- 4 GB RAM

- 200 GB and more free disk space for user mailboxes and backups

### Note

- An active user is a user that uses the Kerio MailServer services multiple times a day (e.g. mail services, calendar, tasks, etc.).

- These recommendations apply only in case the computer is used only as a mailserver (Kerio MailServer, antivirus, anti-spam).

Prev | Up | Next
Chapter 2 Installation | Contents | 2.2 Conflicting software