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

Page 6
Image 6
HP Veritas Volume Manager 5.0 -UX 11i v3 Taking a disk offline 118, 119, 133, 136, Displaying DMP database information 137