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We tested the use cases that this guide presents in a scale-out SAP HANA deployment with three worker nodes and one standby node on a local PowerMax 2000 array connected over SRDF to a remote PowerMax 8000 array. The following figure depicts the test environment:
Each PowerMax array has a management server that is connected to the installed Dell Solutions Enabler command line (SYMCLI). The following sections present use cases that use SYMCLI commands.
The same number of SAP HANA nodes must be available at the remote site or standby SAP HANA appliance. The nodes use the R2 devices for their SAP HANA persistence when a failover occurs.
The following table shows the local and remote storage groups and device IDs used for the SAP HANA installation, as well as those used as linked targets for the SnapVX operations. The “Use case” row refers to the use cases that use the storage groups and the devices that are contained within them. The device IDs are color-coded to correspond to the devices shown in images in the related use cases.
SAP HANA persistence | Local storage group and device ID | Remote storage group and device ID | |||||||
SAP HANA node | Device size | HANA_SG_R1 | HANA_LNK_TGT | HANA_SG_R2 | HANA_SS | HANA_LNK_TGT | HANA_CS_QA | HANA_CS_TRN | HANA_CS_DEV |
Use case | 1,2,3 | 6 | 1,2,3 | 5 | 7 | ||||
Server 01 DATA | 512 GB | 019 | 03E | 01A | 040 | 025 | 02B | 031 | 037 |
Server 01 LOG | 256 GB | 01C | 041 | 019 | 043 | 028 | 02E | 034 | 03A |
Server 02 DATA | 512 GB | 01A | 03F | 01B | 041 | 026 | 02C | 032 | 038 |
Server 02 LOG | 256 GB | 01D | 042 | 01C | 044 | 029 | 02F | 035 | 03B |
Server 03 DATA | 512 GB | 01B | 040 | 01E | 042 | 027 | 02D | 033 | 039 |
Server 03 LOG | 256 GB | 01E | 043 | 01D | 045 | 02A | 030 | 036 | 03C |
Note: For SRDF replications, we used a single consistency group and SRDF group that included all the SAP HANA persistent devices (data and log), as shown in the table.