You can install HACMP to define and access a unique journaled
file system (JFS) file that is stored on a single storage unit from any attached
host system. If you choose not to install HACMP and are attaching multiple RS/6000 or pSeries hosts,
consider the following:
- Without HACMP,
some system failure management features such as failover are not available.
Therefore, a failure on the storage unit or any one of the connected host
systems will most likely affect the availability of the other connected devices.
- Multiple host systems cannot access the same volume group or the same
journaled file system simultaneously.
- You must vary on and mount the volume groups and journaled file systems
every time that you start the system.
- The storage unit does not allow ownership of volume groups to move from
one system to another.
- When you use this procedure, you can define between 2 - 4 multiple host
systems.