HANA News Blog
SAP HANA Hyperscaler news 09/2024
Jens Gleichmann • 20. September 2024
News for AWS, GCP and MS Azure
🎯 GCP has certified the first Emerald Rapids SP instances - c4-highmem (2024-08-14)
🎯 MS Azure has certified Msv3 + Mdsv3-series with max. 1792 vCPUs and 30TB RAM (2024-09-02)
🥇 AWS is the leader in the virtualized instance type category
🥇 GCP is the leader in the bare metal instance type category
total by RAM statistic:
1. GCP : x4-megamem-1920-metal: 32.768 GiB
2. MS Azure: M896ixds_32_v3 / M1792ixds_32_v3: 30.400GiB
3. AWS: u7in-24tb.224xlarge: 24.576GiB
🌇 As MS Azure's S-Series (HANA Large Instance service) is in sunset mode, there are no bare metal instances left which you can order.
SAP HANA News by XLC
The topic of HANA performance is one of the most discussed topics in nearly every single SAP project we are involved. Performance has always been an important aspect in general; however, particularly when switching databases or application releases - whether moving from anyDB to HANA or, more specifically, from ERP on
There are multiple DMO scenarios and use cases. We heard of many confusions and mixed up statements which we want to order:
SUM can not only update software components, but can also execute a database migration (for ABAP based systems)
DMO used to be heterogeneous (change of DB). Now you can use DMO with system move (also on-prem to target on-prem) to migrate and convert ECC on HANA to S/4 or just update/upgrade S/4 and move it to another location like other DC or other instance in one step.
The DMOVE2S4 is just to move and convert to the cloud in one step. This includes also anyDB source systems and downtime-optimization techniques (doDMO and doC).
SAP HANA Monitoring Views Cheat Sheet
Please notice that when you want to run HANA 2.0 SPS07, you need defined OS levels. As you can see RHEL7 and SLES12 are not certified for SPS07. The SPS07 release of HANA is the basis for the S/4HANA release 2023 which is my recommended go-to release for the next years. Keep in mind that you have to go to SPS07 when you are running SPS06 because it will run out of maintenance end of 2023.
KVM as alternative with low TCO
An inverted individual index is a special type of SAP HANA index which can only cover unique indexes. This includes all primary key structures. Unlike traditional column store indexes on more than one column (inverted value, inverted hash) an inverted individual index (Inv Idv Idx) doesn't need a dedicated concat.
This blog presents the results of a customer case which can be used as a reference for other implementations
SAP HANA systems may experience high swap usage, hangs, or performance issues when THP (Transparent Huge Pages) is enabled with "madvise". This occurs on multi-NUMA node systems where one or more NUMA nodes are close to full memory usage while others have plenty of free memory, and counters for THP allocations, direct
Transparent Huge Pages (THP) with madvise can trigger high swap usage, performance issues, or even system hangs on multi-NUMA systems.