Dell EMC SC Series Validation Manual page 15

SAP HANA persistence for production installations
For SAP HANA production installations, we recommend using flash drives for the SAP
HANA persistence (data and log volumes) to meet the SAP HANA KPIs.
Flash devices provide benefits for SAP HANA production installations as follows:
SAP HANA persistence for SAP HANA nonproduction installations on SC
Series hybrid models
Although the SAP performance KPIs do not apply to SAP HANA nonproduction
installations, those installations are still critical components in an overall SAP landscape.
For SAP HANA nonproduction installations, we recommend using the SAS drives on the
SC Series hybrid models in Tier 3 storage.
SC Series
Use the guidelines in the following table to estimate the initial number of SAP HANA
production nodes that can be connected to the SC Series arrays. These guidelines are
scalability
based on our performance tests on an SC5020F and SCv3020 Series model using the
SAP hwcct tool. We ran the tests without competing workloads.
Table 2.
Note: We determined the scalability of other SC Series array models by extrapolating from the
SC5020F and SCv3020 Series test results using the performance characteristics of the other
models.
The number of nodes that are listed in Table 2 are an initial guideline to help you
determine the number of SAP HANA worker nodes that can be connected to an array for
an existing or planned SAP HANA production environment. The actual number of
production nodes that can be connected in a customer environment might be higher or
lower, depending on the workload. Use the SAP HANA hwcct tool with scenario HANA-
HWC-ES 1.1 to validate the SAP HANA performance and determine the maximum
number of SAP HANA hosts on a specific storage array.

Sub-millisecond latencies for small block sizes on the log volume

Reduced SAP HANA startup times when data is read from the data volume into
memory

Reduced SAP HANA host auto-failover times in scale-out deployments when a
standby node takes over the data from a failed worker node

Reduced SAP HANA backup times when the backup process needs to read
the data from the data volume
Scalability of SC Series models for SAP HANA production systems
Model
SCv3020
SC5020F
SC7020F
SC9000
Dell EMC SC Series Storage Configuration Best Practices for SAP HANA TDI
Storage design for SC Series arrays for SAP HANA
Number of SAP HANA
worker nodes
6
12
18
24
SC9000, SC7020, SC5020, and SCv3020 Storage Arrays
Dedicated 16 GB/s FC ports
per storage controller/array
3/6
4/8
6/12
8/16
Validation Guide
15