SME Server:Documentation:Administration Manual:Chapter4/de
Kapitel 4. Hardware Anforderungen des SME Servers
Die Hardware-Anforderungen des SME Servers sind im Vergleich zu anderen aktuellen Server-Softwarelösungen moderat. Wegen der besonders wichtigen Rolle des SME Servers sollte die benötigte Hardware aber trotzdem sorgfältig ausgesucht werden. Die Hardwareanforderungen hängen insbesondere von der Anzahl der Benutzer, die Verwendung des integrierten Proxyservers, Spam- und Virenfilters, der genutzten Fernzugriffsverbindungen sowie der Geschwindigkeit der Internetverbindung ab.
Vorab dazu folgende Anmerkungen:
- Die Fernzugriffsverbindungen des SME Servers sind in der Voreinstellung ausgeschaltet. Wenn Sie Webmail, SSH und PPTP verwenden, werden sich CPU-Last und Arbeitsspeicherverbrauch deutlich erhöhen. Hier kann sich ein schnellerer Prozessor auszahlen.
- Der Server sollte mit jeder i586 oder i686 kompatiblnen CPU funktionieren, die auch mit CentOS 4 zusammenarbeiten kann.
- Die Größe des Arbeitsspeichers in verfügbaren RAM sollte besondes beachtet werden, weil sie die Last der Festplatten (Swap) veringert. Bei einer Entscheidung entweder mehr RAM oder größere CPU bringt mehr RAM normalerweise die besseren Ergebnisse.
- Für die direkte Internetverbindung im Server & Gateway-Modus benötigt Ihr Server zwei Ethernet-Netzwerkkarten. Bei einer Einwahlverbindung oder Nutzung im Nur Server-Modus kommen Sie mit nur einer Ethernet-Netzwerkkarte aus.
4.1. Minimum Hardware Requirements
The following information outlines what we consider the bare minimum system that will function as a basic file/print server and network gateway. Note that we do not believe such a system will provide satisfactory performance for features such as webmail, remote access via PPTP, Virus and Spam Scanners, which are cpu intensive will not perform well on this platform. To utilize all the features of SME Server 7.0, please have a look at the 'Recommended' Hardware Requirements.
| Category | Specifications |
|---|---|
| Architecture | PCI-based i586 or i686 compatible processor |
| Processor speed | 400 MHz |
| RAM | 256 MB |
| Hard Drive | IDE or SCSI - at least 4 GB |
| SCSI adapter | SCSI adapter must appear on the supported list (only necessary for SCSI systems) |
| Ethernet adapter(s) | The ethernet adapters installed on your server must appear on the supported list. |
| Modem (for dialup only) | Only modems that are Linux-compatible may be used. WinModems are not supported. |
| CD-ROM drive | ATAPI or SCSI |
| Monitor | any |
| Graphics card | any |
4.2. Recommended Hardware Requirements
The following information is what we would suggest is the recommended minimum to utilize all the features of SME Server 7.0. How many users this configuration will support depends on how heavily the server will be utilized, but should be sufficient for at least 25 users.
| Category | Specifications |
|---|---|
| Architecture | PCI-based i686 compatible processor |
| Processor speed | 1.5GHz |
| RAM | 512 MB |
| Hard Drive | One or more IDE or SCSI - at least 40 GB |
| SCSI adapter | SCSI adapter must appear on the supported list (only necessary for SCSI systems) |
| Ethernet adapter(s) | The ethernet adapters installed on your server must appear on the supported list. |
| Modem (for dialup only) | Only modems that are Linux-compatible may be used. WinModems are not supported. |
| CD-ROM drive | ATAPI or SCSI |
| Monitor | any |
| Graphics card | any |
4.3. Hard Drive Configuration
SME Server 7 introduces a new feature - Automatic configuration of Software RAID 1, 5 or 6. RAID is a way of storing data on more than one hard drive at once, so that if one drive fails, the system will still function. In the case of RAID 6, two drives can fail and the system will still function. We highly recommend that at a minimum you utilize 2 identical drives in your sytem to take advantage of the redundancy provided by the RAID configuration.
Your server will be automatically configured as follows:
- 1 Drive - Software RAID 1 (ready to accept a second drive).
- 2 Drives - Software RAID 1
- 3-5 Drives - Software RAID 5
- 6+ Drives - Software RAID 6
4.4. Supported Ethernet or SCSI Adapters, or Tape Drives
Either one ethernet adapter (in the case of dialup connectivity or server-only mode) or two ethernet adapters (for dedicated connections in server and gateway mode) must be installed on your SME Server. Your ethernet adapters must be supported by Red Hat Enterprise Linux 4.
If the computer you plan to use for your server has a SCSI hard disk, your SCSI adapter must be supported by Red Hat Enterprise Linux 4.
If you intend to use the tape backup capabilities of the SME Server, you must have a tape drive that is supported by Red Hat Enterprise Linux 4.