You work as a Server Administrator for company Inc. The company has a virtual server hosted on a
Windows Server 2008 server with the Hyper-V role installed. You have upgraded an application on
the virtual server. You experience that this upgrade causes problems. Now, you want to quickly
revert back to the point before the changes are made. Which of the following will you use to
accomplish the task?
A.
Virtual Server Migration Toolkit
B.
Snapshots
C.
Windows System Resource Manager
D.
Logical unit number
Explanation:
In order to accomplish the task, you should use snapshots. Snapshots are files that contain the
configuration and data in a virtualized machine. The Hyper-V Manager Console provides the facility
to take a snapshot of a virtual machine running under Hyper-V. This snapshot can be used to quickly
roll-back the instance of an operating system when the snapshot was taken. In state of any disaster
such as malfunctioning virtual machine, these snapshots are very helpful to recover from such
situations.D is incorrect. The logical unit number or LUN is the identifier of a SCSI logical unit, and by
extension of a Fibre Channel or iSCSI logical unit. A logical unit is a SCSI protocol entity, which
performs classic storage operations such as read and write. Each SCSI target provides one or more
logical units. A logical unit typically corresponds to a storage volume and is represented within a
computer operating system as a device.A is incorrect. The Virtual Server Migration Toolkit (VSMT), a command-line-based tool
provided by Windows Server 2008, is used to migrate existing servers in the network environment to
a virtualized partition of Windows Server 2008. VSMT has been specially designed for administrators
to handle small number of servers that needs to be virtualized. It however, cannot be used to
manage these servers. It uses XML files to store configuration data during the migration process. The
tool is compatible with both the Hyper-V and the Virtual Server 2005 R2.C is incorrect. Windows System Resource Manager (WSRM) is a tool for resource
management and enables the allocation of resources, including processor and memory resources,
among multiple applications based on business priorities. With WSRM, a system administrator can
set CPU and memory allocation policies on applications, manage CPU utilization, and apply policies
to users or groups on a Terminal Services application server. WSRM also applies limits to process
working set size and committed memory consumption.