// To the reader, this note is working copy about the SSP 3.4.  
*Whats New!*
	- Automatic SSP and control board failover
	  Automatically switches the main SSP or the primary control 
	  board to its spare counterpart when failure is detected.
	- Enhanced performance in dynamic reconfiguration (DR) Attach
	  operations. (hpost -l7)

	- New Daemons
	  fod	:	The failover daemon monitors SSP components
			(connections to the SSPs, controlboards, and 
			 domains) and SSP resources for failure 
			conditions that prevent the proper operation of
			the main ssp.
	  datasyncd :	The data synchroniztion daemon propagates SSP 
			config data ans specidfied files from the main
			SSP to the spare.  This synchronization keeps 
			SSP data on the spare SSP current with the 
			main SSP for failover purposes.

1. SSP 3.4 requires a /.rhosts and /export/home/ssp/.rhosts created
on both ssps.
	/.rhosts  < "'mainssphostname' root"
	/.rhosts  < "'sparessphostname' root"
	/export/home/.rhosts  < "'mainssphostname' ssp"
	/export/home/.rhosts  < "'sparessphostname' ssp"
2. Remove the command stty from .cshrc, this can prevent rcp, rsh
   from functioning. InfoDoc 11371

3. Floating Main SSP IP is required.  

4. /etc/ssphostname on all domains should reflect floating hostname

5. The spare option to ssp_config no longer exits.  

6. ssp_config float	to configure floater

7. The nodename and primary hostname of ssps must be the hostname to the ssp-domain network.
	To Rename SSP:
	/etc/hosts
	/etc/nodename
	/etc/net/ticlts/hosts
	/etc/net/ticlts/hosts
	/etc/net/ticotsord/hosts
	ssp-unconfig
	reboot
	ssp-config

8.	Automatic SSP Failover
	I. Situations
		A.  FAiled Network Connections
		B.  SSP Panci, power failure, drop to OBP
		C.  Low on Resources.
			Ultra-Enterprise-10000.fod.VMThreshold:1000
			Ultra-Enterprise-10000.fod.DSThreshold:1
	II. Disable or Enable Automatic SSP Failover
		setfailover off		(Disable)
		or
		setfailover on  	(Enable)
		showfailover 		(Verify)
	III. Forcing a Failover
		setfailover force
			*Before failover, sync ssps 
			 setdatasync  (See VI)
	IV.  Change Disk and Mem treshold from ssp_resource
		setfailover -m 1000		(In kilobytes)
		setfailover -d 1		(In kilobytes)
	V.   See if ssp is MAIN or SPARE
		showfailover -r
	VI.  Using setdatasync (datasyncd on spare does not monitor)
		- Add a file to the data propragation list
			setdatasync -i <min> schedule <filename>
		- Remove a file from the dta propagation list
			setdatasync cancel <filename>
		- Erase entries from data propagation list
			setdatasync clean
		- Push a file to spare without adding to list
			setdatasync <push>
		- Resync Main to Spare ssp. (Enough space in /tmp?)
			setdatasync backup
	VII.  See sync status
		showdatasync
		showdatasync -l		(To see list)
		 
	VIII.  cmdsync

9.	Automatic Control Board Failover
	
	I.	Disable or Enable cb failover
		setfailover -t cb off
		setfailover -t cb on
	II.  	To do a manual failover 
		setfailover -t cb force



10.	datasyncd ---> fod---->CB

Summary of Failover Detection Points and Actions

Failure		SSP Failover	Disabled	CB Failover	CB Dis

Main to Domains		X
Spare to Domains		X
Main			X
Spare				X
Primary to Spare Hub		X
Prim to Spare Hub		X
Prim to Prim Hub	X
Spare to Spare Hub		X
Main Hub					X
Spare Hub			X				X
Pri CB to Pri Hub				X
Spare CB to Spare Hub						X
Primary CB					X
Spare CB							X