General Requirements

The following tables specify the minimum server and proxy requirements.

Do not use NFS for storage because it does not support SELinux file labeling.

1. Server Requirements

Table 1. Server Requirements for x86-64 Architecture
Software and Hardware	Details	Recommendation
openSUSE Leap Micro 6.1	Clean installation, up-to-date	openSUSE Leap Micro 6.1
CPU	-	Minimum 4 dedicated 64-bit CPU cores (x86-64)
RAM	Test or Base Installation	Minimum 16 GB
	Production Server	Minimum 32 GB
Disk Space	`/` (root directory)	Minimum 40 GB
	`/var/lib/pgsql`	Minimum 50 GB
	`/var/spacewalk`	Minimum storage required: 100 GB (this will be verified by the implemented check) * 50 GB for each SUSE product and Package Hub * 360 GB for each Red Hat product
	`/var/cache`	Minimum 10 GB. Add 100 MB per SUSE product, 1 GB per Red Hat or other product. Double the space if the server is an ISS Master.
	Swap space	3 GB

2. Proxy Requirements

Table 2. Proxy Requirements
Software and Hardware	Details	Recommendation
openSUSE Leap Micro 6.1	Clean installation, up-to-date	openSUSE Leap Micro 6.1
CPU		Minimum 2 dedicated 64-bit CPU cores
RAM	Test Server	Minimum 2 GB
	Production Server	Minimum 8 GB
Disk Space	`/` (root directory)	Minimum 40 GB
	`/srv`	Minimum 100 GB
	`/var/cache` (Squid)	Minimum 100 GB

SUSE Multi-Linux Manager Proxy caches packages in the /var/cache/ directory. If there is not enough space available in /var/cache/, the proxy will remove old, unused packages and replace them with newer packages.

As a result of this behavior:

The larger /var/cache/ directory is on the proxy, the less traffic there will be between it and the SUSE Multi-Linux Manager Server.
By making the /var/cache/ directory on the proxy the same size as /var/spacewalk/ on the SUSE Multi-Linux Manager Server, you avoid a large amount of traffic after the first synchronization.
The /var/cache/ directory can be small on the SUSE Multi-Linux Manager Server compared to the proxy. For a guide to size estimation, see the [server-hardware-requirements] section.