Distribution of Files to Disk 

SAP recommends that the R/3 SQL Server System files are distributed to at least 3 different disks. The following illustrates the distribution of files to disks.

Folder

Disk

Files

C:\WINNT

1

NT Operating System

C:\HELPNT

1

Auxiliary NT version

C:\MSSQL7

1

SQL Server executables

C:\MSSQL7DB

1

msdb and master databases

C:\TEMPDB

1

tempdb

C:\USR\SAP

1

R/3 executables

C:\pagefile.sys

1

NT page file

D:\<SID>DATA

2

R/3 database, data files

L:\<SID>LOG

3

R/3 database log files

 

For the sake of clarity, this documentation refers to the disks as follows:

Disk 1

Executables disk

RAID1 disk system

Disk 2

R/3 data disk

RAID5 disk system

Disk 3

R/3 log disk

RAID1 disk system

 

 

If your disk configuration is different to the one illustrated here, you may need to contact your Basis consultant for advice on how to proceed after a disk crash.