Help Center/ SAP Cloud/ SAP HANA HA and DR Guide/ SAP HANA HA Planning (Distance and RTT)
Updated on 2022-03-04 GMT+08:00
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SAP HANA HA Planning (Distance and RTT)

Typical round-trip time (RTT):

  • The recommended network bandwidth between data centers is 10 Gbit/s (shared).
  • The RTT (ms) between data centers is determined based on the feasibility and rationality. In addition, there may be a deviation.
Table 1 RTT

Item

Assumed Distance (km)

Target RTT

Host Auto Failover (local disk)

0

< 0.1 ms

Synchronous System Replication

10-50

0.5 ms-1 ms

Asynchronous System Replication

> 100

10+ ms

Synchronous Storage Replication

10

50

0.5 ms

1 ms

Asynchronous Storage Replication

> 100

10+ ms