adding new physical volume to rs/6000

i have suddenly become responsible for an rs/6000...my background has alway been as/400....anyway....
i have had a developer ask me to add a new physical volume
to the system and have no idea where to begin...from what i
understand, there is a bunch of disk on the system that is
available....can anyone help????
thanx
sunkingAsked:
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biyiadeniranConnect With a Mentor Commented:
Hi,
YOu can use the utility smit to add a new physical volume:
You need to know the following:
1. The Hard disk type
2. The parent adapter
3. Connection Address
Do the following:
As root run smit
Click on" System Storage Management (Physical & Logical Storage)" Click on "  Logical Volume Manager "
click on " Physical Volumes  "
click on "  Add a Disk"
Select the disk type
Select the parent adapter
Enter the Connection Address and press enter to create the volume.
To know the adapter type:
One the first screen of smit
Click on "Devices"
Click on "  List Devices "
Click on "List All Defined Devices "
And check for the scsi adapter on which the disk is.

I hope you do have a nice time in UNIX
'Biyi


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sunkingAuthor Commented:
Adjusted points to 100
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neweraCommented:
Sunking,
Assuming that you need to add the Physical Volume because you want more space to be available in a certain directory within a filesystem, you may also need to know which Volume Group  needs the disk added. Look at the "df" command to see what is mounted, and do a "pg /etc/filesystems". You can also use "smit vg" to examine the contents of the existing volume groups on your system. Once you have determined which volume group needs the space,  you can use another smit procedure:
NB be careful to use this only for new disks that don't have data which you need on them. Any  data previously on a disk is lost if you use this procedure to add it.
 smit extendvg
Then:
 Select Add a Physical Volume to a Volume Group.
 List the volume groups and select the one.
 In the PHYSICAL VOLUME names field, press PF4 to get a list of available physical volumes to choose from, and select one.
 Press Enter to add the disk to the volume group.

You will still need to use smit to increase the size of the filesystem which resides inside the given Volume Group, which should not be difficult provided that your Logical Volume maximum size permits it. Don't forget if you are unsure of any entry during smit operations you can usually get an explanation by pressing the F1 key. You would also be wise to use the "info" command on your RS6000 to read up about the above matters before carrying out the procedures.
Hope this helps.
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