Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

Displaying the redundancy level of a device or enclosure ............. 173
Specifying the minimum number of active paths ........................ 174
Displaying the I/O policy ....................................................... 174
Specifying the I/O policy ........................................................ 175
Disabling I/O for paths, controllers or array ports ...................... 182
Enabling I/O for paths, controllers or array ports ....................... 183
Upgrading disk controller firmware ......................................... 183
Renaming an enclosure ......................................................... 184
Configuring the response to I/O failures ................................... 185
Configuring the I/O throttling mechanism ................................ 186
Displaying recovery option values ........................................... 188
Configuring DMP path restoration policies ................................ 189
Stopping the DMP path restoration thread ................................ 191
Displaying the status of the DMP path restoration thread ............ 191
Displaying information about the DMP error-handling
thread .......................................................................... 191
Configuring array policy modules ............................................ 191
Chapter 4 Creating and administering disk groups ...................... 193
About disk groups ....................................................................... 194
Specification of disk groups to commands ................................. 195
System-wide reserved disk groups ........................................... 196
Rules for determining the default disk group ............................. 196
Displaying disk group information ................................................ 198
Displaying free space in a disk group ........................................ 199
Creating a disk group .................................................................. 200
Adding a disk to a disk group ........................................................ 200
Removing a disk from a disk group ................................................ 201
Deporting a disk group ................................................................ 202
Importing a disk group ................................................................ 204
Handling cloned disks with duplicated identifiers ............................. 204
Writing a new UDID to a disk .................................................. 206
Importing a disk group containing cloned disks ......................... 206
Sample cases of operations on cloned disks ............................... 208
Renaming a disk group ................................................................ 213
Moving disks between disk groups ................................................. 216
Moving disk groups between systems ............................................. 216
Handling errors when importing disks ..................................... 217
Reserving minor numbers for disk groups ................................. 219
Compatibility of disk groups between platforms ......................... 220
Handling conflicting configuration copies ....................................... 221
Example of a serial split brain condition in a cluster ................... 222
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