File System Planning

Updated on 2023-05-29 GMT+08:00

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SAP HANA File System Planning

Table 1 describes the specifications of the file system planned for SAP HANA.

**Table 1** File system planned for SAP HANA
Mount Point	File System Capacity (GB)	File System Type	Shared	Remarks
/	40 GB or larger	N/A	No	OS volume
/hana/data	400	xfs	No	Data volume: ultra-high I/O; it is recommended that the capacity of the data volume be at least one time the size of the memory; use two physical disks to make a data volume in using Logical Volume Manager (LVM).
/hana/log	200	xfs	No	Log volume: ultra-high I/O; when the memory is less than or equal to 512 GB, the log volume capacity is half of the memory and rounded up for decimal places. When the memory is greater than 512 GB, the log volume capacity is 512 GB.
/hana/shared	400	xfs	No	Shared volume. If the memory size is smaller than 1 TB, the recommended volume size is at least one time that of the memory size. If the memory size is larger than or equal to 1 TB, the recommended volume size is up to 1 TB.
/hana/backup	Auto expansion	(Optional) SFS/SFS Turbo	No	Create an SFS or SFS Turbo file system as the backup volume.
/usr/sap	50	xfs	No	/usr/sap volume
N/A	10	swap	No	Swap volume
N/A	10	N/A	Yes (SCSI)	SBD volume. You need to create this volume on the active HANA node and mount this volume to the standby HANA node. The SBD volume does not need to be formatted.

NOTE:

You only need to create an SBD volume on the active ECS and mount it to the standby ECS.

SAP S/4HANA File System Planning

Table 2 describes the specifications of the file system planned for SAP S/4HANA.

**Table 2** File system planned for SAP S/4HANA
Mount Point	File System Capacity (GB)	File System Type	Shared	Description
/	40 GB or larger	N/A	No	OS volume
/usr/sap	50	xfs	No	/usr/sap volume
/sapmnt	40	SFS	Yes	Shared to all nodes in the SAP S/4HANA system
/sapcd	Auto expansion	SFS	Yes	Stores the SAP installation package, which is shared to all nodes in the SAP S/4HANA system.
/usr/sap/trans	60	SFS	Yes	Shared to all nodes in the SAP S/4HANA system
/usr/sap/<SID>/ASCS##	80	xfs	Yes	Shared to the active ASCS node, which is used to install the ASCS instance.
/usr/sap/<SID>/ERS##	80	xfs	Yes	Shared to the standby ASCS node, which is used to install the ERS instance.
N/A	10	N/A	Yes	SBD volume, which is shared to the active and standby nodes.
N/A	30G	swap	No	Swap volume

NOTE:

SID is the SID parameter specified when SAP S/4HANA is installed., and ## indicates the instance number when ASCS and ERS are installed. For details, see SAP S/4HANA ECS Planning.

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