A. Maintain HA with SAP HANA system replication configured with SYNC mode and table preload turned on across two Availability Zones. In each Availability Zone, use the same size SAP HANA node. Decrease the size of the DR node to at least 64 GiB of memory or the row store size plus 20 GiB, whichever is higher, with ASYNC mode and table preload turned on. Increase the size of the DR node during a DR event.
B. Maintain HA with SAP HANA system replication configured with SYNC mode and table preload turned on across two Availability Zones. In each Availability Zone, use the same size SAP HANA node. Decrease the size of the DR node to at least 64 GiB of memory or the row store size plus 20 GiB, whichever is higher, with ASYNC mode and table preload turned off. Increase the size of the DR node during a DR event.
C. Maintain HA with SAP HANA system replication across two Availability Zones. Decrease the size of the HA secondary node to at least 64 GiB of memory or the row store size plus 20 GiB, whichever is higher, with SYNC mode and table preload turned on. Increase the size of the HA secondary node during an HA event. Decrease the size of the DR node to at least 64 GiB of memory or the row store size plus 20 GiB, whichever is higher, with table preload turned on. Increase the size of the DR node during a DR event.
D. Maintain HA with SAP HANA system replication across two Availability Zones. Decrease the size of the HA secondary node to at least 64 GiB of memory or the row store size plus 20 GiB, whichever is higher, with SYNC mode and table preload turned on. Increase the size of the HA secondary node during an HA event. Decrease the size of the DR node to at least 64 GiB of memory or the row store size plus 20 GiB, whichever is higher, with table preload turned off. Increase the size of the DR node during a DR event.