Appendix G High Availability546 September 2002 HPSS Installation GuideRelease 4.5, Revision 2% bootlist -m normal hdisk0 hdisk1% shutdown -FrNote that the last step reboots the machine. This is necessary to disable the normal quorumchecking for rootvg.G.3.3 Diagram the Disk LayoutOne key aspect to setting up your disks, volume groups, logical volumes, and file systems properlyis knowing which disks to use. This is easiest if you draw a diagram to plan out your volumegroups. To make sure your drawing is correct, it is important to know what bus the disks are on.Use the lsdev -Cc disk command, and you will get output similar to the following (for SCSI):% lsdev -Cc disk...hdisk2 Available 20-58-00-0,0SCSI Disk Drivehdisk3 Available 20-58-00-1,0SCSI Disk Drive...hdisk11 Available 20-60-00-0,0SCSI Disk Drivehdisk12 Available 20-60-00-1,0SCSI Disk Drive...Use the lsdev -Cc adapter command, and you will get something like:% lsdev -Cc adapter...scsi3 Available 20-58 SCSI Controllerscsi4 Available 20-59 SCSI Controllerscsi5 Available 20-60 SCSI Controllerscsi6 Available 20-61 SCSI Controller...By comparing the third column in both outputs, it can be determined that hdisk2 and hdisk3 haveSCSI IDs 0 and 1 respectively on the bus attached to scsi3 and that hdisk11 and hdisk12 have SCSIIDs 0 and 1 respectively on the bus attached to scsi5. Therefore, you would most likely want to havehdisk2 mirror hdisk11 and hdisk3 mirror hdisk12.G.3.4 Plan Shared File SystemsBefore creating your diagram, take note that file systems supporting DCE, Encina SFS, HPSS,Sammi, and Java must reside on shared disks. Other site-specific file systems may also need toreside on shared disks in order to ensure that they are available to HPSS regardless of which nodeis active. The default list of shared file systems to support the above mentioned components are:• /krb5• /var/dce• /etc/dce• /opt/encinalocal
