Installation guide

The network configuration must be determined beforehand. Red Hat Enterprise Linux for IBM System
z supports QD IO-enabled (Queued Direct I/O) and LCS (LAN channel station) devices. The CTC
(channel-to-channel) and IUCV (inter-user communication vehicle) are deprecated and are not
supported in Red Hat Enterprise Linux.
For the purposes of this installation, it is recommended that at least 4 GB of disk space (such as two
2 GB D ASD, direct access storage device, partitions or equivalent IBM System z SCSI LUNs) be
allocated for the installation process. All DASD disk allocations should be completed prior to the
installation process. After the installation, more DASD or SCSI (for IBM System z only) disk partitions
may be added or deleted as necessary.
16.3. Basic Overview of t he Boot Met hod
To prepare for installation, you must have the Linux kernel (kernel.img), the ram disk
(initrd.img), and if using z/VM, an optional CMS configuration file (redhat.conf) and a
parameter file. Sample parameter and CMS configuration files are provided (redhat.parm and
redhat.conf). You should edit the CMS configuration file and add information about your DASD.
You may also want to add some information about your network configuration. Once this is started
on the IBM System z, the networking is configured. You can then use ssh on another computer to log
into your installation image. Now you can start an installation script to install Red Hat Enterprise
Linux.
16.4. Preparing for a Net work Inst allat ion
Ensure that you have boot media available on CD , DVD, or a USB storage device such as a flash
drive.
The Red Hat Enterprise Linux installation media must be available for either a network installation
(via NFS, FTP, or HTTP) or installation via local storage. Use the following steps if you are
performing an NFS, FTP, or HTTP installation.
The NFS, FTP, or HTTP server to be used for installation over the network must be a separate
machine which can provide the complete contents of the installation D VD-ROM or the installation
CD-ROMs.
Note
In the following examples, the directory on the installation staging server that will contain the
installation files will be specified as /location/of/disk/space. The directory that will be
made publicly available via FTP, NFS, or HTTP will be specified as /publicly/available/directory.
For example, /location/of/disk/space may be a directory you create called /var/isos.
/publicly/available/directory might be /var/www/html/rhel5, for an HTTP install.
To copy the files from the installation DVD or CD-ROMs to a Linux machine which acts as an
installation staging server, perform the following steps:
Create an iso image from the installation disk(s) using the following command (for DVD s):
dd if=/dev/dvd of=/location/of/disk/space/RHEL5.iso
where dvd refers to your DVD drive device.
Red Hat Ent erprise Linux 5 Inst allat ion G uide
174