Forum Discussion
SAP S/4HANA choose best IaaS
Hello Folks I need some help and advice from you, I have this requirement below and I need to know what is the best to choose: Type System usage Usage CPU SAPS RAM in GB SAP needed Storage...
Hi RaadAlrawi
I believe it should be M series for sure to give you a better flexibility for cache:
For standard storage, the possible cache types are:
None
Read
Read/Write
To get consistent and deterministic performance, set the caching on standard storage for all disks that contain DBMS-related data files, log and redo files, and tablespace to NONE. The caching of the base VHD can remain with the default.
For Azure premium storage, the following caching options exist:
None
Read
Read/write
None + Write Accelerator, which is only for Azure M-Series VMs
Read + Write Accelerator, which is only for Azure M-Series VMs
For premium storage, we recommend that you use Read caching for data files of the SAP database and choose No caching for the disks of log file(s).
For M-Series deployments, we recommend that you use Azure Write Accelerator for your DBMS deployment.
Reference:
https://learn.microsoft.com/en-us/azure/virtual-machines/workloads/sap/dbms_guide_general
The general guidance is to use an average target CPU utilization of 65%. If your average utilization is below 30%, the CPU is considered oversized.
In particular, SAP Note #1872170 documents reports (/SDF/HDB_SIZING and ZNEWHDB_SIZE) that facilitate estimating the memory and disk space requirements for the database tables of Business Suite on HANA, S/4HANA
Thanks,
I believe it should be M series for sure to give you a better flexibility for cache:
For standard storage, the possible cache types are:
None
Read
Read/Write
To get consistent and deterministic performance, set the caching on standard storage for all disks that contain DBMS-related data files, log and redo files, and tablespace to NONE. The caching of the base VHD can remain with the default.
For Azure premium storage, the following caching options exist:
None
Read
Read/write
None + Write Accelerator, which is only for Azure M-Series VMs
Read + Write Accelerator, which is only for Azure M-Series VMs
For premium storage, we recommend that you use Read caching for data files of the SAP database and choose No caching for the disks of log file(s).
For M-Series deployments, we recommend that you use Azure Write Accelerator for your DBMS deployment.
Reference:
https://learn.microsoft.com/en-us/azure/virtual-machines/workloads/sap/dbms_guide_general
The general guidance is to use an average target CPU utilization of 65%. If your average utilization is below 30%, the CPU is considered oversized.
In particular, SAP Note #1872170 documents reports (/SDF/HDB_SIZING and ZNEWHDB_SIZE) that facilitate estimating the memory and disk space requirements for the database tables of Business Suite on HANA, S/4HANA
Thanks,