1. Create volume group.
See the section Creating Volume Groups.
2. Create logical volume:
a. Enter the command smitty.
b. Select:
Physical & Logical Storage → Logical Volume Manager → Logical Volumes → Add a Logical Volume
c. Enter volume group name.
d. Enter logical volume name (for example: lvsap02).
e. Enter the number of logical partitions.
f. Set the logical volume TYPE to r3data and press ENTER.
g. Press F10 to exit SMIT.
The logical volume can be accessed through /dev/r<name of raw
log.vol>.
Name of logical volume: lvsap02 leads to the corresponding device name
/dev/rlvsap02.
3. Accessing raw devices
For each logical volume, create a link to access the volume.
DB2 UDB for UNIX and Windows: Not necessary
Informix: ln -s /dev/rlvsap01
/informix/<SAPSID>/sapdata/physdev1/data1
Oracle: Not necessary
SAP DB: Not necessary (R3SETUP creates the links)