Home > Articles

This chapter is from the book

Sample Design Models

Although the possibilities for OU and group design are virtually unlimited, often the same designs unfold because business needs are similar for many organizations. Over time, three distinctive models that influence OU and group design have emerged. The first model is based on a business function design, where varying departments dictate the existence of OUs and groups. The second model is geographical based, where remote sites are granted separate OUs and groups.

Business Function–Based Design

CompanyA is a clothing manufacturer based in St. Louis, Missouri. Facilities for the company are limited to a small group of locations in Dayton that are connected by T1 lines. A central IT department directly manages approximately 50% of the computer infrastructure within the company. The rest of the company is remotely managed by the following independent groups within the company:

  • Sales

  • Manufacturing

  • Design

  • Management

Historically, there have been five NT domains within the organization, as shown in Figure 6.12. Each domain was created to give each department autonomy and administrative control over its own environment.

The NT domains were connected via two-way trusts and were named as follows:

  • IT_NT

  • SALES_NT

  • MANUF_NT

  • DESIG_NT

  • MNGMT_NT

Figure 6.12Figure 6.12 Multiple Windows NT4 domain structure.

OU Design for a Business Function–Based Design

While the culture of the company revolves around this decentralized business approach, the IT department wanted to consolidate these domains into a single AD domain, while at the same time preserving the administrative autonomy that the various departments had with the old environment. The result was a single Active Directory domain named companya.com that utilized five separate OUs, one for each department, similar to the structure shown in Figure 6.13.

Figure 6.13Figure 6.13 Organizational unit design.

To create this structure, the resource domains were collapsed into the single AD domain with the use of the Active Directory Migration Tool (ADMTv2). For more detailed analysis of this procedure, see Chapters 16, "Migrating from NT4 to Windows .NET Server 2003," and 17, "Migrating from Windows 2000 to Windows .NET Server 2003."

Administrative rights were assigned to each OU by creating special global groups whose members included the local administrators for each department, as displayed in Figure 6.14. These groups were then delegated password change, user creation/deletion, and other typical administrative capabilities on their respective department's OUs through use of the Delegation of Control Wizard (see the "Delegation of Administration with OUs" section earlier in this chapter).

Figure 6.14Figure 6.14 Delegation control task completion.

Group Design for a Business Function–Based Design

A group structure was created with five separate global groups that contained users from each department. The global groups were named as follows:

  • IT Global

  • Sales Global

  • Manufacturing Global

  • Design Global

  • Management Global

Resources were assigned domain local groups that followed a standard naming scheme, such as that represented in the following examples:

  • Printer1 DL

  • FileServer3 DL

  • VidConfServer1 DL

  • Printer3 DL

Security rights for all resources were then given to the appropriate domain local groups that were set up. The global groups were added as members to those groups as appropriate. For example, the printer named Printer3 was physically located in an area between both the Design and the Sales departments. It was determined that this printer should be accessible from both groups. Consequently, printing access was given to the Printer3 DL group, and both the Design Global and Sales Global groups were added as members to the Printer3 DL group, as shown in Figure 6.15.

Figure 6.15Figure 6.15 Nesting groups to assign permissions.

This type of resource security allowed for the greatest amount of flexibility and reduced the replication of group membership needed in the domain. If, at a later time, the decision is made to allow the IT department to print off Printer3 as well, simply adding the IT Global group into the Printer3 DL group will do the trick.

Geographical-Based Design

As was the case with the business function–based design model, domain structures can easily be tailored to the needs of organizations with geographically dispersed locations, each with its own sets of administrators. It is important to understand that simply having sites in remote locations does not immediately warrant creation of an OU for each site. Some type of special local administration is required in those remote sites before OU creation should be considered.

Keeping this point in mind, consider the example of CompanyB. It is an international semiconductor producer that is centralized in Sacramento, California, but has worldwide remote branches in Malaysia, Costa Rica, Tokyo, Australia, Berlin, and Kiev, as shown in Figure 6.16.

Administration takes place on a continent-by-continent basis. In other words, Berlin and Kiev are both managed by the same team, and Tokyo and Malaysia use the same administrators. Australia administers its own users, as does Costa Rica.

Figure 6.16Figure 6.16 Sample trust design of full domain-to-domain trusts.

OU Design for a Geographical-Based Design

The AD designers at CompanyB determined that the local administrative requirements of the branch offices were best served through the creation of OUs for each administrative region. A Europe OU was created for users in Berlin and Kiev, and an Asia OU was created for Tokyo and Malaysia. The three other sites were given individual OUs, as shown in Figure 6.17.

Figure 6.17Figure 6.17 Redesign using organizational units instead of domain trusts.

Group Design for a Geographical-Based Design

Domain local groups were created to grant access to each OU on a resource basis. For example, a domain local group named Europe OU DL was created for application of security to the Europe organizational unit. To apply this security, the Delegation of Control Wizard was run on each OU, and each corresponding domain local group was granted Administrative access to its own respective OUs.

Membership in the domain local groups was only the first step for allowing CompanyB's administrators to manage their own environments. Global groups were created for each IT team, corresponding with their physical location. For example, Berlin IT Admins Global and Kiev IT Admins Global global groups were created, and each IT admin user account for the remote locations was added as a member of its respective groups. The two global groups were then added as members of the Europe OU DL domain local group, as shown in Figure 6.18. The same process was applied to the other OUs in the organization. This solution allowed for the greatest degree of administrative flexibility when dealing with permissions set on the OUs.

Each administrative team was consequently granted a broad range of administrative powers over its own environment, allowing each team to create users, change passwords, and effectively administer its own environments without the need for broad, sweeping administrative powers over the entire domain.

The added advantage of this design is that it is completely flexible, and administrative control can be re-delegated on the fly, so to speak. For example, if a branch office opens in Paris, and IT administrators in that location need to have equivalent administrative control over the Europe OU, a simple global group can be created and added as a member to the Europe OU DL domain local group. Removing permissions is subsequently straightforward. In addition, entire OU memberships can effectively be collapsed into a different OU structure, as required by the changing needs of different organizations.

Figure 6.18Figure 6.18 Nested delegation of control.

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.

Overview


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information


To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information


Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children


This site is not directed to children under the age of 13.

Marketing


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information


If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information


Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020