SAP Technical Architecture guide
Linux & HANA Installation
Review essential Linux checks, storage commands, HDBLCM stages, prerequisites, and common SAP HANA installation exam traps.
What to understand
Before a HANA installation, prove that the host, operating system, CPU, memory, storage, hostname and network match the approved design. HDBLCM is SAP HANA's lifecycle-management tool; the PDF shows Install new system as action 1. An installer screen is only a checkpoint: the installation is complete only after the final status and logs succeed.
| Command | What it tells you | Do not confuse it with |
|---|---|---|
| cat /etc/os-release | Linux distribution and release | uname, which reports kernel/system information |
| cat /proc/meminfo | Detailed memory information | Free disk capacity |
| lsblk | Block devices and their layout | df -h, which reports mounted-filesystem usage |
| df -h | Filesystem capacity and free/used space | du -sh, which totals a directory's usage |
| du -sh /hana/data | Space consumed by a directory tree | The capacity of the underlying disk |
| lscpu | CPU architecture and topology | Operating-system release |
| hostname / ping | Host identity / basic reachability | Proof that SAP ports and services are ready |
| uname -a | Combined kernel and system information | HANA revision or patch level |
HDBLCM flow to remember
1. Start the approved hdblcm from the correct media. 2. Choose the installation action and components. 3. Supply the approved SID, instance number, host, usage type and data/log paths. 4. Review the summary before execution. 5. Continue only when prerequisite checks pass. 6. Verify completion status and installation logs.
The recording includes prompts for the install path, host, SID, instance, worker group, system usage, data and log volumes, certificate hostname, passwords, operating-system users and automatic restart.
Active recall
Test yourself
1. Which command distinguishes filesystem capacity from directory consumption?
Reveal answer
`df -h` reports filesystem usage; `du -sh` summarizes a directory.
2. What must happen between entering HDBLCM parameters and executing installation?
Reveal answer
Review the complete parameter summary and prerequisite results.
3. Does ping prove that a HANA service is healthy?
Reveal answer
No. It checks basic reachability, not service state, ports or database health.
Practice this module
This guide maps to 4 questions in the SAP Technical Architecture Top 40 bank.
Open practice