10g CRS deamon starting/stopping

This is just a short extract from the full note (available here). Looks like this is important and needs to be considered while designing the system that CRS in needed to run 10g RAC and that the only way to start it in case of failure is reboot machine

CRS (Cluster Ready Services) is a new feature for 10g Real Application Clusters
that provides a standard cluster interface on all platforms and performs
new high availability operations not available in previous versions

Prior to installing CRS and 10g RAC, there are some key points to remember about CRS and 10g RAC:
- CRS is REQUIRED to be installed and running prior to installing 10g RAC.
- CRS can either run on top of the vendor clusterware (such as Sun Cluster, HP Serviceguard, IBM HACMP, TruCluster, Veritas Cluster, Fujitsu Primecluster,etc...) or can run without the vendor clusterware. The vendor clusterware was required in 9i RAC but is optional in 10g RAC.
- The CRS HOME and ORACLE_HOME must be installed in DIFFERENT locations.
- The supported method to start CRS is booting the machine. MANUAL STARTUP OF THE CRS STACK IS NOT SUPPORTED UNTIL 10.1.0.4 OR HIGHER.
- The supported method to stop is shutdown the machine or use "init.crs stop".