Convert this into MB (divide by 1024 to get k, and then divide this figure by 1024 to get MB).
Run lsvg rootvg to find out how many MB make up a PP on the system you are working on: divide the dump size (in MB) by the number of MB per PP to work out how many PPs you will need for the dump device. (Always round up!)
Check how many PPs are free in the rootvg (lsvg -p rootvg)
Create the dump devices as follows: mklv -y
The usual standard is to have two dump devices, one named dumplv1 and the other named dumplv2.
To assign these filesystems as dump devices, run smitty dump and choose Change the Primary Dump Device and Change the Secondary Dump Device respectively. When you enter the dump device make sure you enter the full path, e.g. /dev/dumplv1
