Administering disks 85

Discovering and configuring newly added disk devices

See “Changing device naming for TPD-controlled enclosures” on page 94 for information on how to change the form of TPD device names that are displayed by VxVM.

See “Displaying information about TPD-controlled devices” on page 143 for details of how to find out the TPD configuration information that is known to DMP.

Administering the Device Discovery Layer

Dynamic addition of disk arrays is possible because of the existence of the Device Discovery Layer (DDL) which is a facility for discovering disks and their attributes that are required for VxVM and DMP operations. The DDL is administered using the vxddladm utility, which can be used to perform the following tasks:

■List the types of arrays that are supported.

■Add support for an array to DDL.

■Remove support for an array from DDL.

■List information about excluded disk arrays.

■List disks that are supported in the DISKS (JBOD) category.

■Add disks from different vendors to the DISKS category.

■Remove disks from the DISKS category.

■Add disks as foreign devices.

The following sections explain these tasks in more detail. For further information, see the vxddladm(1M) manual page.

Listing details of supported disk arrays

To list all currently supported disk arrays, use the following command:

#vxddladm listsupport all

Note: Use this command to obtain values for the vid and pid attributes that are used with other forms of the vxddladm command.

To display more detailed information about a particular array library, use this form of the command:

# vxddladm listsupport libname=library_name.sl