S1000-007 Exam Dumps : IBM AIX v7 Administrator Specialty

Theimportvgcommand in AIX reads the Volume Group Descriptor Area (VGDA) and the Physical Volume ID (PVID) of the disks to identify and import volume group members. The VGDA contains metadata about the volume group, including information about logical volumes and physical volumes. The PVID is a unique identifier assigned to each physical volume, helping the system recognize and manage the disks within a volume group. The other elements, such as LVID, UUID, and UDID, are not used by theimportvgcommand for this purpose.References:= IBM AIX Documentation

The cfgmgr command updates the system configuration database with the current configuration of the devices attached to the system. When the SAN administrator increases the size of a LUN device (hdisk), it is not automatically reflected on the AIX LPAR. Running the cfgmgr command updates the system with the new size information and makes it visible to the system administrator.

Devices that are connected to the system can be in one of four states.

Devices that are connected to the system can be in one of the following states:

Item

Description

Undefined

The device is unknown to the system.

Defined

Specific information about the device is recorded in the customized database, but it is unavailable to the system.

Available

A defined device is coupled to the operating system, or the defined device is configured.

Stopped

The device is unavailable but remains known by its device driver.

If a tty device and a printer alternately use the same tty connector, both a tty device and a printer are defined on the same parent and port in the device configuration database. Only one of these devices can be configured at a time. When the tty connector is configured, the printer specific setup information is retained until it isconfigured again. The device is not removed; it is in the defined state. Maintaining a device in defined state retains customized information for a device that is not currently in use, either before it is first made available or while it is temporarily removed from the system.

If a device driver exists for a device, the device can be made available through the device driver.