HP Veritas Volume Manager 5.0 -UX 11i v3 Administering dynamic multipathing (DMP), Chapter

		Contents 7
	Taking a disk offline ..........................................................................................	118
	Renaming a disk .................................................................................................	119
	Reserving disks ..................................................................................................	119
	Displaying disk information ............................................................................	120
	Displaying disk information with vxdiskadm .......................................	121
	Controlling Powerfail Timeout ........................................................................	122
	Setting the PFTO values ............................................................................	122
	Displaying the PFTO values .....................................................................	122
	Enabling or disabling PFTO ......................................................................	123
Chapter 3	Administering dynamic multipathing (DMP)
	How DMP works .................................................................................................	125
	How DMP monitors I/O on paths ............................................................	128
	Load balancing ............................................................................................	129
	DMP coexistence with HP-UX native multipathing .............................	130
	DMP in a clustered environment .............................................................	132
	Disabling and enabling multipathing for specific devices ..........................	133
	Disabling multipathing and making devices invisible to VxVM ........	133
	Enabling multipathing and making devices visible to VxVM .............	134
	Enabling and disabling I/O for controllers and storage processors ..........	136
	Displaying DMP database information ..........................................................	137
	Displaying the paths to a disk ..........................................................................	137
	Administering DMP using vxdmpadm ...........................................................	139
	Retrieving information about a DMP node ............................................	139
	Displaying the members of a LUN group ...............................................	140
	Displaying paths controlled by a DMP node, controller or array port 140
	Displaying information about controllers .............................................	141
	Displaying information about enclosures ..............................................	142
	Displaying information about array ports .............................................	142
	Displaying information about TPD-controlled devices .......................	143
	Gathering and displaying I/O statistics ..................................................	144
	Setting the attributes of the paths to an enclosure ..............................	146
	Displaying the I/O policy ..........................................................................	147
	Specifying the I/O policy ..........................................................................	147
	Disabling I/O for paths, controllers or array ports ...............................	153
	Enabling I/O for paths, controllers or array ports ................................	154
	Upgrading disk controller firmware .......................................................	154
	Renaming an enclosure .............................................................................	155
	Configuring the response to I/O failures ................................................	156
	Configuring the I/O throttling mechanism ............................................	157
	Displaying recoveryoption values ...........................................................	159
	Configuring DMP path restoration policies ...........................................	160
	Stopping the DMP path restoration thread ...........................................	161