Setup guide

10-62
EPC Connecting Guide
Using AMDAS JBOD Disks as a System Disk Extension
Building a System Disk
1. Stop gracefully HACMP
smit clstop
2. Stop all the applications
3. Make a system backup of hdisk0 that is currently running
4. Reboot the node on the AIX installation CD–Rom in service mode
5. If the maintenance screen appears, type:
6 {System Boot}
0 {Boot from List}
6. Answer the questions: choice of system console and language used for installation
7. When the menu Welcome to Base Operating System Installation and Maintenance
appears, type:
2 {Change/Show Installation Settings and Install}
1 {Disk(s) where you want to install...}
8. Select the first disk of the AMDAS JBOD from the list displayed
Warning: The internal disk is selected by default because rootvg was previously installed
on it. Once the right disk is selected, start the installation from the tape.
9. During installation turn the key of the front panel to normal mode so that the node
reboots automatically.
10.At this point the node is started and rootvg is installed on the AMDAS JBOD.
Mirroring a System Disk
For JBOD disks running as system disk, the hdisk number is assigned at boot time and
changes according to the disk used as boot.
It is hdisk0 for example for a first JBOD disk and hdisk1 for a second JBOD disk.
1. Add hdisk1 to the rootvg volume group
extendvg –f rootvg hdisk1
2. Modify the quorum option of rootvg at ”no”
chvg –ay –Qn rootvg
3. Build a second boot logical volume on hdisk1
mklv –y hd51 –t boot –a e rootvg 1 hdisk1
with the command
lspv –p hdisk0
and
lspv –p hdisk1
check that hd5 and hd51 have the same physical partition number on the two disks.