Home > Workload Solutions > SAP > Archive > SC Series Storage Configuration Best Practices for SAP HANA TDI > Optimizing file I/Os after SAP HANA installation
After the initial SAP HANA installation is complete, set the parameters by using the SAP HANA hdbparam command as <sid>adm in the Linux shell:
su - <sid>adm
hdbparam –p # lists current parameter setting
hdbparam –-paramset fileio.max_parallel_io_requests[DATA]=256
hdbparam –-paramset fileio.async_read_submit[DATA]=on
hdbparam –-paramset fileio.async_write_submit_blocks[DATA]=all
hdbparam –-paramset fileio.max_parallel_io_requests[LOG]=256
hdbparam –-paramset fileio.async_read_submit[LOG]=on
hdbparam –-paramset fileio.async_write_submit_blocks[LOG]=all
SAP HANA 2.0
Starting with SAP HANA 2.0, the hdbparam command-line tool has been deprecated. Instead, the parameters are defined as normal parameters in global.ini >[fileio].
Set the parameter as follows in the global.ini file:
max_parallel_io_requests[DATA]=256
max_parallel_io_requests[LOG]=256
Both async_read_submit=on and async_write_submit_blocks=all are set by default during installation.
For more information, see SAP Note 2399079: Elimination of hdbparam in HANA 2 (access requires an SAP username and password).
Note: The preceding instructions for tuning file I/O parameters are based on SAP HANA 1.0 SPS 11 and SAP HANA 2.0 SPS01. Future SAP HANA versions might allow these parameters to be set in configuration files. See the latest SAP HANA documentation for more information.