How to use the VxCLUS utility with VERITAS Volume Manager, VERITAS Storage Foundation (SFW) for Windows managing disks in a Microsoft Cluster Server (MSCS) environment, and with Storage Foundation for Windows High Availability (SFW-HA)

Article:TECH30693  |  Created: 2009-01-26  |  Updated: 2009-01-26  |  Article URL http://www.symantec.com/docs/TECH30693
Article Type
Technical Solution

Product(s)

Environment

Issue



How to use the VxCLUS utility with VERITAS Volume Manager, VERITAS Storage Foundation (SFW) for Windows managing disks in a Microsoft Cluster Server (MSCS) environment, and with Storage Foundation for Windows High Availability (SFW-HA)

Solution



The VxCLUS utility provides a means to remove the limitation that a Cluster dynamic disk group cannot be created on the same bus as the Microsoft Windows System or Boot disk. It also allows disk groups to be imported on a cluster without a majority of disks. The
SANBOOT switch of vxclus.exe has been renamed to UseSystemBus, and the option will work for both SCSI and fibre devices. The following syntax usage is common to Volume Manager and Storage Foundation:

  • vxclus enable -g<disk group name> : Allows the disk group to be brought online one time with a minority of disk group members. The functionality is disabled following a successful online of the group.
  • vxclus disable -g<disk group name> : Disables minority online if user executes vxclus enable for the group, and then decides not to online the group with a minority of disks.
  • vxclus cleanup : Disables minority online for all disk groups for which it has been enabled.

When running <VxClus> a new key is created of the type REG_DWORD within the following hive:

32Bit Systems: HKLM\Software\Veritas\VxSVC\CurrentVersion\MSCS Force import
64Bit Systems: HKLM\Software\Wow6432Node\Veritas\VxSVC\CurrentVersion\MSCS Force import

The name of the key will be the dynamic disk group name that was used when the <VxClus> enable command was run. The value of the key also depends if <VxClus> was run with or without the persistent switch:
Examples:
Command Key Name Type Value
<vxclus> enable -g<disk group name> <disk group name> REG_DWORD 1
<vxclus> enable -g<disk group name> -p <disk group name> REG_DWORD 2


SFW 4.1 and above includes the switch -p switch. If -p is specified, the entry made in the Windows registry is such that the vxclus force import functionality remains enabled. This allows persistent force imports of a cluster disk group so that this resource can always be brought online with in the cluster. The -p switch is applicable to SFW in an MSCS environment only.

The vxclus utility is applicable to SFW-HA to allow the creation of a Cluster dynamic disk group on the same bus as the Microsoft Windows System or Boot disk.  To create a cluster disk group on the same bus as the disk that contains the cluster node's system or boot disk execute the following command in a Windows command prompt:
For Volume Manager 3.1:
vxclus enable sanboot.

For SFW 4.1 and above:
vxclus UseSystemBus ON.

To reverse the vxclus UseSystemBus ON command and remove the Registry changes that make it possible to create a Cluster dynamic disk group that can reside on the same bus as the cluster node's system or boot disk, use the command, execute the following command in a Windows command prompt:
vxclus UseSystemBus OFF







Legacy ID



266015


Article URL http://www.symantec.com/docs/TECH30693


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