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Get a glimpse interior Microsoft windows Server 2003 Insider Solutionswith this excerpt from Chapter 8, "Administering windows Server 2003 Remotely." click privilege here to study this chapter or here to purchase the ebook.
ebook abstract:in preference to being a conventional planning, design, and implementation guide, this booklet is a major resource for home windows specialists to ascertain information, hints, and greatest practices for implementing and aiding key windows Server 2003 applied sciences. The authors started working with windows Server 2003 (then codename Whistler) simply days after the code for home windows 2000 became locked, when most agencies hold been getting a primary haphazard to note the windows 2000 server product. With greater than three years of taste working with Whistler in early beta and construction implementations, the authors of this e-book hold offered a resource to assist you bear windows 2003 technologies work effectively.
Chapter abstract:remote server administration will furthermore live a huge time-saver, and windows Server 2003 has the elements you want for making the system even simpler, faster and more secure. This chapter excerpt provides a complete overview of latest equipment, finest practices, protection and fresh features such as far flung assistance and Emergency management service.
This chapter download from "Microsoft home windows Server 2003 Insider options" through Andrew Abbate, Eric Kovach, Rand Morimoto and Ed Roberts is printed with license from Sams, Copyright 2004.to witness each and every chapter downloads accessible on SearchWinComputing.com, click here.
Administering home windows Server 2012 examination 70-411 App covers the 2nd of three assessments required for Microsoft certified options affiliate (MCSA): home windows Server 2012 certification. This direction will attend validate the capabilities and talents essential to manage a home windows Server 2012 Infrastructure in an enterprise atmosphere. The three MCSA assessments jointly validate the scholarship and skills censorious for enforcing, managing, preserving, and provisioning capabilities and infrastructure in a windows Server 2012 atmosphere. This Microsoft official educational course is mapped to the 70-411 Administering windows Server 2012 examination ambitions. This App makes a speciality of precise scholarship for true jobs and prepares college students to exhibit mastery of core features similar to consumer and community administration, community entry, and statistics security.
In Administering home windows Server 2012 examination 70-411 free app giving access for 16 (70%) training and following lesson quiz.
direction outline:lessons:1 Deploying and Managing Server Images2 implementing Patch Management3 Monitoring Servers4 Configuring allotted File system (DFS)5 Configuring File Server resource supervisor (FSRM)6 Configuring File services and Disk Encryption7 Configuring superior Audit Policies8 Configuring DNS Zones9 Configuring DNS Records10 Configuring VPN and Routing11 Configuring Direct Access12 Configuring a network policy Server13 Configuring NPS Policies14 Configuring network entry insurance policy (NAP)15 Configuring Server Authentication16 Configuring domain Controllers17 keeping lively Directory18 Configuring Account Policies19 Configuring neighborhood coverage Processing20 Configuring neighborhood policy Setting21 Managing neighborhood policy Objects22 Configuring community coverage Preferences
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Administering Windows Server 2012 Exam 70-411 App covers the second of three exams required for Microsoft Certified Solutions Associate (MCSA): Windows Server 2012 certification. This course will attend validate the skills and scholarship necessary to administer a Windows Server 2012 Infrastructure in an enterprise environment. The three MCSA exams collectively validate the skills and scholarship necessary for implementing, managing, maintaining, and provisioning services and infrastructure in a Windows Server 2012 environment. This Microsoft Official Academic Course is mapped to the 70-411 Administering Windows Server 2012 exam objectives. This App focuses on true skills for true jobs and prepares students to prove mastery of core services such as user and group management, network access, and data security.
In Administering Windows Server 2012 Exam 70-411 free app giving access for 16 (70%) Lessons and following lesson quiz.
Course Outline:LESSONS:1 Deploying and Managing Server Images2 Implementing Patch Management3 Monitoring Servers4 Configuring Distributed File System (DFS)5 Configuring File Server Resource Manager (FSRM)6 Configuring File Services and Disk Encryption7 Configuring Advanced Audit Policies8 Configuring DNS Zones9 Configuring DNS Records10 Configuring VPN and Routing11 Configuring Direct Access12 Configuring a Network Policy Server13 Configuring NPS Policies14 Configuring Network Access Protection (NAP)15 Configuring Server Authentication16 Configuring Domain Controllers17 Maintaining energetic Directory18 Configuring Account Policies19 Configuring Group Policy Processing20 Configuring Group Policy Setting21 Managing Group Policy Objects22 Configuring Group Policy Preferences
Disclaimer :This app was not created or endorsed by Microsoft
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The following section is topical in approach. Rather than recount each and every the administrative functions and capabilities of a certain screen, such as the Database Settings page in the SSMS demur Explorer, this section provides a top-down view of the most considerable considerations when designing the storage for an instance of SQL Server 2012 and how to achieve maximum performance, scalability, and reliability.
This section begins with an overview of database files and their consequence to overall I/O performance, in “Designing and Administering Database Files in SQL Server 2012,” followed by information on how to effect considerable step-by-step tasks and management operations. SQL Server storage is centered on databases, although a few settings are adjustable at the instance-level. So, noteworthy consequence is placed on proper design and management of database files.
The next section, titled “Designing and Administering Filegroups in SQL Server 2012,” provides an overview of filegroups as well as details on considerable tasks. Prescriptive guidance furthermore tells considerable ways to optimize the utilize of filegroups in SQL Server 2012.
Next, FILESTREAM functionality and administration are discussed, along with step-by-step tasks and management operations in the section “Designing for BLOB Storage.” This section furthermore provides a brief introduction and overview to another supported mode storage called Remote Blob Store (RBS).
Finally, an overview of partitioning details how and when to utilize partitions in SQL Server 2012, their most effective application, common step-by-step tasks, and common use-cases, such as a “sliding window” partition. Partitioning may live used for both tables and indexes, as minute in the upcoming section “Designing and Administrating Partitions in SQL Server 2012.”Designing and Administrating Database Files in SQL Server 2012
Whenever a database is created on an instance of SQL Server 2012, a minimum of two database files are required: one for the database file and one for the transaction log. By default, SQL Server will create a separate database file and transaction log file on the identical default destination disk. Under this configuration, the data file is called the Primary data file and has the .mdf file extension, by default. The log file has a file extension of .ldf, by default. When databases exigency more I/O performance, it’s typical to add more data files to the user database that needs added performance. These added data files are called Secondary files and typically utilize the .ndf file extension.
As mentioned in the earlier “Notes from the Field” section, adding multiple files to a database is an effective route to extend I/O performance, especially when those additional files are used to segregate and offload a portion of I/O. They will provide additional guidance on using multiple database files in the later section titled “Designing and Administrating Multiple Data Files.”
When you hold an instance of SQL Server 2012 that does not hold a towering performance requirement, a separate disk probably provides adequate performance. But in most cases, especially an considerable production database, optimal I/O performance is crucial to meeting the goals of the organization.
The following sections address considerable proscriptive guidance concerning data files. First, design tips and recommendations are provided for where on disk to dwelling database files, as well as the optimal number of database files to utilize for a particular production database. Other guidance is provided to recount the I/O repercussion of certain database-level options.Placing Data Files onto Disks
At this stage of the design process, imagine that you hold a user database that has only one data file and one log file. Where those individual files are placed on the I/O subsystem can hold an immense repercussion on their overall performance, typically because they must partake I/O with other files and executables stored on the identical disks. So, if they can dwelling the user data file(s) and log files onto separate disks, where is the best dwelling to set aside them?
When designing and segregating I/O by workload on SQL Server database files, there are certain predictable payoffs in terms of improved performance. When separating workload on to separate disks, it is implied that by “disks” they suggest a separate disk, a RAID1, -5, or -10 array, or a volume mount point on a SAN. The following list ranks the best payoff, in terms of providing improved I/O performance, for a transaction processing workload with a separate major database:
Figure 3.5 shows what this configuration might witness like.
Figure 3.5. example of basic file placement for OLTP workloads.
Figure 3.6 shows an example of intermediate file placement for OLTP workloads.
Figure 3.6. example of intermediate file placement for OLTP workloads.
Figure 3.7 shows and example of advanced file placement for OLTP workloads.
Figure 3.7. example of advanced file placement for OLTP workloads.
As mentioned earlier, SQL Server defaults to the creation of a separate primary data file and a separate primary log file when creating a fresh database. The log file contains the information needed to bear transactions and databases fully recoverable. Because its I/O workload is serial, writing one transaction after the next, the disk read-write head rarely moves. In fact, they don’t want it to move. Also, for this reason, adding additional files to a transaction log almost never improves performance. Conversely, data files hold the tables (along with the data they contain), indexes, views, constraints, stored procedures, and so on. Naturally, if the data files reside on segregated disks, I/O performance improves because the data files no longer contend with one another for the I/O of that specific disk.
Less well known, though, is that SQL Server is able to provide better I/O performance when you add secondary data files to a database, even when the secondary data files are on the identical disk, because the Database Engine can utilize multiple I/O threads on a database that has multiple data files. The common rule for this technique is to create one data file for every two to four rational processors available on the server. So, a server with a separate one-core CPU can’t really lift advantage of this technique. If a server had two four-core CPUs, for a total of eight rational CPUs, an considerable user database might achieve well to hold four data files.
The newer and faster the CPU, the higher the ratio to use. A brand-new server with two four-core CPUs might achieve best with just two data files. furthermore note that this technique offers improving performance with more data files, but it does plateau at either 4, 8, or in rare cases 16 data files. Thus, a commodity server might exhibit improving performance on user databases with two and four data files, but stops showing any improvement using more than four data files. Your mileage may vary, so live certain to test any changes in a nonproduction environment before implementing them.Sizing Multiple Data Files
Suppose they hold a fresh database application, called BossData, coming online that is a very considerable production application. It is the only production database on the server, and according to the guidance provided earlier, they hold configured the disks and database files enjoy this:
Most of the time, BossData has bizarre I/O performance. However, it occasionally slows down for no immediately evident reason. Why would that be?
As it turns out, the size of multiple data files is furthermore important. Whenever a database has one file larger than another, SQL Server will forward more I/O to the great file because of an algorithm called round-robin, proportional fill. “Round-robin” means that SQL Server will forward I/O to one data file at a time, one privilege after the other. So for the BossData database, the SQL Server Database Engine would forward one I/O first to the primary data file, the next I/O would depart to the first secondary data file in line, the next I/O to the next secondary data file, and so on. So far, so good.
However, the “proportional fill” section of the algorithm means that SQL Server will focus its I/Os on each data file in spin until it is as full, in proportion, to each and every the other data files. So, if each and every but two of the data files in the BossData database are 50Gb, but two are 200Gb, SQL Server would forward four times as many I/Os to the two bigger data files in an trouble to keep them as proportionately complete as each and every the others.
In a situation where BossData needs a total of 800Gb of storage, it would live much better to hold eight 100Gb data files than to hold six 50Gb data files and two 200Gb data files.Autogrowth and I/O Performance
When you’re allocating space for the first time to both data files and log files, it is a best practice to arrangement for future I/O and storage needs, which is furthermore known as capacity planning.
In this situation, evaluate the amount of space required not only for operating the database in the near future, but evaluate its total storage needs well into the future. After you’ve arrived at the amount of I/O and storage needed at a reasonable point in the future, mumble one year hence, you should preallocate the specific amount of disk space and I/O capacity from the beginning.
Over-relying on the default autogrowth features causes two significant problems. First, growing a data file causes database operations to unhurried down while the fresh space is allocated and can lead to data files with widely varying sizes for a separate database. (Refer to the earlier section “Sizing Multiple Data Files.”) Growing a log file causes write activity to halt until the fresh space is allocated. Second, constantly growing the data and log files typically leads to more rational fragmentation within the database and, in turn, performance degradation.
Most experienced DBAs will furthermore set the autogrow settings sufficiently towering to avoid frequent autogrowths. For example, data file autogrow defaults to a skimpy 25Mb, which is certainly a very small amount of space for a diligent OLTP database. It is recommended to set these autogrow values to a considerable percentage size of the file expected at the one-year mark. So, for a database with 100Gb data file and 25GB log file expected at the one-year mark, you might set the autogrowth values to 10Gb and 2.5Gb, respectively.
Additionally, log files that hold been subjected to many tiny, incremental autogrowths hold been shown to underperform compared to log files with fewer, larger file growths. This phenomena occurs because each time the log file is grown, SQL Server creates a fresh VLF, or virtual log file. The VLFs connect to one another using pointers to exhibit SQL Server where one VLF ends and the next begins. This chaining works seamlessly behind the scenes. But it’s simple common sense that the more often SQL Server has to read the VLF chaining metadata, the more overhead is incurred. So a 20Gb log file containing four VLFs of 5Gb each will outperform the identical 20Gb log file containing 2000 VLFs.Configuring Autogrowth on a Database File
To configure autogrowth on a database file (as shown in design 3.8), supervene these steps:
You can alternately utilize the following Transact-SQL syntax to modify the Autogrowth settings for a database file based on a growth rate of 10Gb and an unlimited maximum file size:USE [master] GO ALTER DATABASE [AdventureWorks2012] MODIFY FILE ( title = N'AdventureWorks2012_Data', MAXSIZE = UNLIMITED , FILEGROWTH = 10240KB ) GO Data File Initialization
Anytime SQL Server has to initialize a data or log file, it overwrites any residual data on the disk sectors that might live hanging around because of previously deleted files. This process fills the files with zeros and occurs whenever SQL Server creates a database, adds files to a database, expands the size of an existing log or data file through autogrow or a manual growth process, or due to a database or filegroup restore. This isn’t a particularly time-consuming operation unless the files involved are large, such as over 100Gbs. But when the files are large, file initialization can lift quite a long time.
It is practicable to avoid complete file initialization on data files through a technique convoke instant file initialization. Instead of writing the entire file to zeros, SQL Server will overwrite any existing data as fresh data is written to the file when instant file initialization is enabled. Instant file initialization does not work on log files, nor on databases where transparent data encryption is enabled.
SQL Server will utilize instant file initialization whenever it can, provided the SQL Server service account has SE_MANAGE_VOLUME_NAME privileges. This is a Windows-level license granted to members of the Windows Administrator group and to users with the effect Volume Maintenance stint security policy.
For more information, refer to the SQL Server Books Online documentation.Shrinking Databases, Files, and I/O Performance
The Shrink Database stint reduces the physical database and log files to a specific size. This operation removes excess space in the database based on a percentage value. In addition, you can enter thresholds in megabytes, indicating the amount of shrinkage that needs to lift dwelling when the database reaches a certain size and the amount of free space that must remain after the excess space is removed. Free space can live retained in the database or released back to the operating system.
It is a best practice not to shrink the database. First, when shrinking the database, SQL Server moves complete pages at the discontinue of data file(s) to the first open space it can find at the birth of the file, allowing the discontinue of the files to live truncated and the file to live shrunk. This process can extend the log file size because each and every moves are logged. Second, if the database is heavily used and there are many inserts, the data files may hold to grow again.
SQL 2005 and later addresses unhurried autogrowth with instant file initialization; therefore, the growth process is not as unhurried as it was in the past. However, sometimes autogrow does not trap up with the space requirements, causing a performance degradation. Finally, simply shrinking the database leads to excessive fragmentation. If you absolutely must shrink the database, you should achieve it manually when the server is not being heavily utilized.
You can shrink a database by right-clicking a database and selecting Tasks, Shrink, and then Database or File.
Alternatively, you can utilize Transact-SQL to shrink a database or file. The following Transact=SQL syntax shrinks the AdventureWorks2012 database, returns freed space to the operating system, and allows for 15% of free space to remain after the shrink:USE [AdventureWorks2012] GO DBCC SHRINKDATABASE(N'AdventureWorks2012', 15, TRUNCATEONLY) GO Administering Database Files
The Database Properties dialog box is where you manage the configuration options and values of a user or system database. You can execute additional tasks from within these pages, such as database mirroring and transaction log shipping. The configuration pages in the Database Properties dialog box that affect I/O performance include the following:
The upcoming sections recount each page and setting in its entirety. To invoke the Database Properties dialog box, effect the following steps:
The second Database Properties page is called Files. Here you can change the owner of the database, enable full-text indexing, and manage the database files, as shown in design 3.9.
Figure 3.9. Configuring the database files settings from within the Files page.Administrating Database Files
Use the Files page to configure settings pertaining to database files and transaction logs. You will expend time working in the Files page when initially rolling out a database and conducting capacity planning. Following are the settings you’ll see:
Perform the following steps to extend the data file for the AdventureWorks2012 database using SSMS:
Keep in mind that many other database options can hold a profound, if not at least a nominal, repercussion on I/O performance. To witness at these options, right-click the database title in the SSMS demur Explorer, and then select Properties. The Database Properties page appears, allowing you to select Options or Change Tracking. A few things on the Options and Change Tracking tabs to keep in mind include the following:
Filegroups are used to house data files. Log files are never housed in filegroups. Every database has a primary filegroup, and additional secondary filegroups may live created at any time. The primary filegroup is furthermore the default filegroup, although the default file group can live changed after the fact. Whenever a table or index is created, it will live allocated to the default filegroup unless another filegroup is specified.
Filegroups are typically used to dwelling tables and indexes into groups and, frequently, onto specific disks. Filegroups can live used to stripe data files across multiple disks in situations where the server does not hold RAID available to it. (However, placing data and log files directly on RAID is a superior solution using filegroups to stripe data and log files.) Filegroups are furthermore used as the rational container for special purpose data management features enjoy partitions and FILESTREAM, both discussed later in this chapter. But they provide other benefits as well. For example, it is practicable to back up and recoup individual filegroups. (Refer to Chapter 6 for more information on recovering a specific filegroup.)
To effect criterion administrative tasks on a filegroup, read the following sections.Creating Additional Filegroups for a Database
Perform the following steps to create a fresh filegroup and files using the AdventureWorks2012 database with both SSMS and Transact-SQL:
Alternately, you may create a fresh filegroup as a set of adding a fresh file to a database, as shown in design 3.10. In this case, effect the following steps:
Alternatively, you can utilize the following Transact-SQL script to create the fresh filegroup for the AdventureWorks2012 database:USE [master] GO ALTER DATABASE [AdventureWorks2012] ADD FILEGROUP [SecondFileGroup] GO Creating fresh Data Files for a Database and Placing Them in Different Filegroups
Now that you’ve created a fresh filegroup, you can create two additional data files for the AdventureWorks2012 database and dwelling them in the newly created filegroup:
The earlier image, in design 3.10, showed the basic elements of the Database Files page. Alternatively, utilize the following Transact-SQL syntax to create a fresh data file:USE [master] GO ALTER DATABASE [AdventureWorks2012] ADD FILE (NAME = N'AdventureWorks2012_Data2', FILENAME = N'C:\AdventureWorks2012_Data2.ndf', SIZE = 10240KB , FILEGROWTH = 1024KB ) TO FILEGROUP [SecondFileGroup] GO Administering the Database Properties Filegroups Page
As stated previously, filegroups are a noteworthy route to organize data objects, address performance issues, and minimize backup times. The Filegroup page is best used for viewing existing filegroups, creating fresh ones, marking filegroups as read-only, and configuring which filegroup will live the default.
To ameliorate performance, you can create subsequent filegroups and dwelling database files, FILESTREAM data, and indexes onto them. In addition, if there isn’t enough physical storage available on a volume, you can create a fresh filegroup and physically dwelling each and every files on a different volume or LUN if a SAN is used.
Finally, if a database has static data such as that create in an archive, it is practicable to glide this data to a specific filegroup and notice that filegroup as read-only. Read-only filegroups are extremely swiftly for queries. Read-only filegroups are furthermore light to back up because the data rarely if ever changes.
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