H/W configuration of S/4 HANA and RedHat 8 Linux installation of S/4 HANA 2020

HW configuration (CPU, Memory, Disk) and RedHat 8 Linux installation for S/4 HANA 2020 installation

To install S/4 HANA 2020 and HANA DB 2.0, first select Operating System (OS) and

The filesystem should be configured accordingly.

To install HANA DB, you can install it on SUSE Relux and RedHat Relux.

In order to install HANA DB, HAHA DB SPS08 was installed from 1 CPU and 32GB of memory.

In other words, you only need 32 GB of memory to install HAHA DB.

In order to install an additional S/4 HANA 2020, 2 CPUs and 128GB of memory are required.

  • H/W specification for HAHA DB: 1 CPU, 32GB memory
  • H/W specification for S/4 HANA 2020:: 2 CPU, 128 GB memory

1. Linux that can install SAP HANA supports SUSE Enterprise Server 15 SP1 or higher and Red Hat Enterprise Linux 8.0 or higher.

Companies that are being used as much as possible and are installing HANA newly are being installed by selecting OS as SUSE Linux.

This is a configuration in which S/4 HANA 2020 + HANA DB 2.0 SPS05 are installed together on one server.

The Linux OS(Operating System) to instal of  S/4 HANA 2020 right now is Red Hat Enterprise Linux 8.3.

  • Red Hat Enterprise Linux 8 for x86_64 (x86_64)
  • HANA 2.0 SPS05

2. HANA’s Filesystem structure

1) Directory of HANA Installation

  • /hana/shared/

A execution of SAP Kernel programs(exe), globally shared data(global), instance profile(profile), HDB  executing file (HDB<00>) directory structure.

  • /hana/shared/<SID>/hdbclient

This is the SAP HANA Client installation directory.

  • /hana/shared/<SID>/hdbstudio

hdbstudio_update HANA studio installation and update directory

2)System Instance directory

  • /usr/sap

Local SAP system instance directory, /usr/sap/<SID>, /usr/sap/hostctrl directory.

3)DATA directory

  • /hana/data/<SID>

Directory containing HANA’s DATA

4)Log directory

  • /hana/log/<SID>

Directory where HANA’s logs are accumulated

 

3. HANA DB 2.0 SPS05 directory configuration

1). Composed of 1 server (Single Host)

2). HANA DB  configuration disk(Filesystem)

Mount Point Recommend size Actual install size
SWAP 2x RAM(Recommend 128GB) 64 GB
/ 20 GB 50 GB
/hana/shared 1 * RAM 100 GB
/hana/data 3 * RAM 300 GB
/hana/log 1 * RAM 50 GB
/usr/sap 30 GB 100 GB

 

4. Red Hat Enterprise Linux 8 download

Go to the site to download Red Hat Enterprise Linux 8.

https://access.redhat.com/downloads

Or download Red Hat for Developers.

https://developers.redhat.com/products/rhel/download

Select x86_64 (9 GB) from the files below depending on your CPU.

5. Create a bootable disk from the downloaded Red Hat 8.3 iso file to USB

Install Red Hat Enterprise Linux 8.3 by making the rhel-8.3-ㅌ86_64-dvd.iso file into a bootable USB disk.

How to create a USB boot disk is detailed below.

https://access.redhat.com/documentation/ko-kr/red_hat_enterprise_linux/7/html/installation_guide/sect-making-usb-media

Red Hat recommends the use of Fedora LiveUSB Creator.

Download from https://fedorahosted.org/liveusb-creator

6. Red Hat Enterprise Linux 8 Installation

Proceed to install RedHat 8.3, which created a bootable disk with USB.

1). Choose to install Red Hat Enterprise Linux 8.

2). The installation language must be English. SAP recommends English for all OS languages.

3). Select Sever from the option to select the required software to install SAP.

Select “Server”.

4).Select Installation Destination to select where the OS is installed.

The red “Do disks selected” indicates that you have not selected the root directory (/) for installation.

5). Select Custom in Storage Configuration and create a Linux Filesystem for installing HANA and S/4 HANA.

Create /hana/shared, /hana/data, /hana/log, /usr/sap, and /sapmnt according to the capacity of each Fileystem previously presented.

I set it up like this with a picture from the internet.

Choose “Custom”.

Click the “+” button to create a new filesystem.

As an example, swap, /hana/shared, /hana/data, etc. are created as zfs type.

6). Select Korean time (Seoul) to match the OS time and date.

7). Select English for the OS keyboard.

8). Language Support selects English.

9).

When all the settings are completed, it is a state that the setting is completed normally

so that there is no red color as shown in the figure below.

10). Finally, enter the root password and press the Reboot button to complete the installation normally.

When SAP HANA, S/4 HANA 2020 are installed, OS users are automatically created.

Here, an administrative account (Admin, etc.) is created without creating a separate one.

Click the Reboot button at the bottom right to complete the installation normally.

 

 

 

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