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Case Study: 16
Trey Research
Scenario
COMPANY OVERVIEW
Trey Research is a pharmaceutical company that has a main office and two branch offices.
The main office is located in Denver. The branch offices are located in New York and
Seattle. The main office has 10,000 users. Each branch office has approximately 200 users.
PLANNED CHANGES
You plan to deploy a new Application named App1. App1 is developed in-house. The binary
executables and support files for App1 contain sensitive intellectual property. Users must
access App1 through document invocation. The users must be prevented from directly
copying or accessing the App1 program files.
EXISTING ENVIRONMENT
The network contains a single Active Directory domain named treyresearch.com. All servers
run Windows Server 2008 R2. All client computers run Windows 7 Enterprise. The network
contains a Web server named Web1 that hosts an intranet site. All users use Web1. Users
report that access to the content on Web1 is slow. You discover that the CPU utilization of
Web1 is approximately 90 percent during peak hours. Microsoft System Center
Configuration Manager is used to deploy updates to all of the client computers.
Existing Network Infrastructure
Each office has several file servers. The file servers have a limited amount of storage space.
Users access the data on all of the file servers. Each branch office has a WAN link to the
main office. Users in the branch office frequently access the file server in the main office.
Current Administration Model
All servers are currently administered remotely by using Remote Desktop. Help desk users
perform the following administrative tasks in the domain:
• Manage printers.
• Create shared folders.
• Manage Active Directory users.
• Modify file permissions and share permissions.
All of the help desk users are members of a global group named HelpDesk. Business Goals.
Trey Research has the following business goals:
• Minimize the cost of making changes to the environment.
• Minimize the cost of managing the network infrastructure and the servers
REQUIREMENTS
Technical Requirements
Trey Research plans to Virtualize all of the servers during the next three years. Trey
Research must meet the following technical requirements for virtualization:
• Simplify the management of all hardware.
• Allocate CPU resources between virtual machines (VMs).
• Ensure that the VMs can connect to multiple virtual local area networks (VLANs).
• Minimize the amount of administrative effort required to convert physical servers to
VMs.
Trey Research must ensure that users can access content in the shared folders if a single
server fails. The solution must also reduce the amount of bandwidth used to access the shared
folders from the branch offices. Trey Research must meet the following technical
requirements for the intranet site:
• Improve response time for users.
• Provide redundancy if a single server fails.
Security Requirements
A new corporate security policy states that only Enterprise Administrators are allowed to
interactively log on to servers.
User Requirements
Users report that it is difficult to locate files in the shared folders across the network. The
users want a single point of access for all of the shared folders in the company.
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You need to recommend changes to the environment that meet the company’s user requirements.
What should you include in the recommendation?
A.
failover clustering
B.
Network Load Balancing (NLB)
C.
Distributed File System (DFS) Replication
D.
a BranchCache in Hosted Cache mode
Explanation:
http ://technet.microsoft.com/en-us/library/cc753479%28WS.10%29.aspx
Distributed File System (DFS) Namespaces and DFS Replication offer simplified, highly-available
access to files, load sharing, and WAN-friendly replication. In the Windows Server® 2003 R2
operating system, Microsoft revised and renamed DFS Namespaces (formerly called DFS), replaced
the Distributed File System snap-in with the DFS Management snap-in, and introduced the new DFS
Replication feature. In the Windows Server® 2008 operating system, Microsoft added the Windows
Server 2008 mode of domain-based namespaces and added a number of usability and performance
improvements.
What does Distributed File System (DFS) do?
The Distributed File System (DFS) technologies offer wide area network (WAN)-friendly replication as
well as simplified, highly-available access to geographically dispersed files. The two technologies in
DFS are the following:
DFS Namespaces. Enables you to group shared folders that are located on different servers into one
or more logically structured namespaces. Each namespace appears to users as a single shared folder
with a series of subfolders. This structure increases availability and automatically connects users to
shared folders in the same Active Directory Domain Services site, when available, instead of routing
them over WAN connections.DFS Replication. DFS Replication is an efficient, multiple-master replication engine that you can use
to keep folders synchronized between servers across limited bandwidth network connections. It
replaces the File Replication Service (FRS) as the replication engine for DFS Namespaces, as well as
for replicating the AD DS SYSVOL folder in domains that use the Windows Server 2008 domain
functional level.