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Technical Information

System Requirements

Minimum Linux server system requirements for installation
  • Local Installation: 512 MiB RAM, 512 MiB Swap recommended
  • 2 GiB available disk space (more recommended, 8.5 GiB for all patterns)
  • 16 GiB for snapshot/rollback of the OS
Recommendations for specific uses
  • 512 MiB to 4 GiB RAM, at least 256 MiB per CPU
  • 4 GiB hard-disk space, 16 GiB for snapshot/rollback of the OS
  • Network interface (Ethernet, wireless or modem)
  • For Xen virtual host server–at least 512 MiB RAM for each virtual host server

Package Descriptions

SUSE Linux Enterprise Server 12 for AMD64 & Intel 64

SUSE Linux Enterprise Server 12 for IBM POWER

SUSE Linux Enterprise Server 12 for IBM zSeries

SUSE Linux Enterprise 12 Kernel (3.12) Limits

SUSE Linux Enterprise 12 (3.12) x86_64 s390x ppc64le
CPU Bits 64 64 64
Max. Number of Logical CPUs 8192 256 2048
Max. RAM (Theoretical / Certified) 1 PiB/64 TiB 10 TiB/256 GiB 1 PiB/64 TiB
Max. User space / Kernel Space 128 TiB/128 TiB N/A 2 TiB/2 EiB
Max. Swap Space up to 29 x 64 GiB (x86_64) or 30 x 64 GiB (other architectures)
Max. Number of Processes 1048576
Max. Number of Threads per Process Maximum limit depends on memory and other parameters (Tested with more than 120,000)
Max. Size per Block Device Up to 8 EiB on all 64-bit architectures

File System Support and Sizes

SUSE Linux Enterprise was the first enterprise Linux distribution to support journaling file systems and logical volume managers back in 2000. Later we introduced xfs to Linux, which today is seen as the primary workhorse for large-scale file systems, systems with heavy load and multiple parallel read- and write-operations.

With SUSE Linux Enterprise 12 we are taking the next step in innovation and are using the copy-on-write file system btrfs as the default for the operating system, to support system snapshots and rollback.

Feature Btrfs XFS Ext4 ReiserFS OCFS2
Data Journaling N/A
Metadata Journaling N/A
Journal Internal N/A
Journal External N/A
Copy on Write N/A N/A N/A N/A
Offline Extend
Offline Shrink
Online Extend
Online Shrink
Sparse Files
Tail Packing
Extended Attributes
Access Control Lists
Dump and Restore
Default Blocksize 4 KiB 4 KiB 4 KiB 4 KiB 4 KiB HA
Blocksize Default 4KiB 4 KiB 4 KiB 4 KiB 4 KiB
Max File System Size 16 EiB 8 EiB 1 EiB 16 TiB 4 PiB
Max File Size 16 EiB 8 EiB 1 EiB 1 EiB 4 PiB