The following applies to latest "October 2005 stream". Note that Linux distributions containing code based on this stream (like Novell SUSE SLES10 and Red Hat RHEL5) have their own documentation on restrictions. For Linux distributions you may find the webpage on IBM tested Linux environments useful.

IBM System z™ (or System z, for short) is used on the "October 2005 stream" pages when referring to the supported mainframes (see Technical Details).

October 2005 stream" - General Restrictions

Kernel (general)

SCLP VT220 driver

Tape driver

Cryptographic Device Driver

Networking

OSA Express driver, QDIO base support, HiperSockets

Networking - Layer 3 mode only

The following applies only when running in Layer 3 mode (i.e. not in Layer 2 mode):

Networking - Layer 2 mode only

The following applies only when running in Layer 2 mode:

Networking - Layer 2 / Layer 3 traffic

The following restriction on Layer 2 and Layer 3 traffic applies only when running in Layer 2 mode on IBM zSeries 990 or 890 or earlier IBM System z9:

The above restriction does not apply when running on recent IBM System z9 - see:

Large MTU sizes may fail due to "order-N allocation failed" problem

Storage

DASD

zfcp

SCSI IPL

s390-tools

s390-tools 1.6.x - general

Virtual Server

Collaborative Memory Management Stage II

Kernel NSS Support

Contact the IBM team

If you want to contact the Linux on System z IBM team refer to the Contact the Linux on System z IBM team page.