Lesson 2 in Visual Studio .NET

Create QR Code JIS X 0510 in Visual Studio .NET Lesson 2

Lesson 2
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Paint Barcode In .NET Framework
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Configuring Disks and Volumes
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QR Code Generator In .NET
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11-23
Painting QR Code JIS X 0510 In Visual Basic .NET
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Barcode Creation In VS .NET
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Lesson Summary
Linear 1D Barcode Creation In .NET Framework
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Disk management tasks can be completed using the Disk Management snap-in or from the command prompt with tools such as Diskpart. Common disk management tasks include creating and deleting partitions and vol umes and assigning drive letters and mount points. Windows Server 2003 allows you to assign one or no drive letter to a volume and, optionally, to mount the volume to one or more empty folders on NTFS volumes. Basic disks can be converted to dynamic disks, but all data and volumes must be deleted to convert a dynamic disk to a basic disk.
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QR Code Encoder In .NET Framework
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11-24
Barcode Maker In .NET Framework
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Encode UPC E In .NET Framework
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11
Drawing PDF-417 2d Barcode In None
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Read Code-128 In None
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Managing Microsoft Windows Server 2003 Disk Storage
Encoding UPCA In .NET Framework
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PDF-417 2d Barcode Maker In .NET
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Lesson 3: Maintaining Disk Storage Volumes
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Windows Server 2003 disk volumes are efficient and stable if formatted with NTFS, but somewhat less so when formatted with FAT or FAT32. The NTFS file system logs all file transactions, replaces bad clusters automatically, and stores copies of key information for all files on the NTFS volume. With these mechanisms, NTFS actively protects the integrity of the volume structure and the file system metadata (the data related to the file system itself). User data, however, can occasionally be corrupted, and can certainly become fragmented. Users also have the annoying habit of storing enormous amounts of archaic and non-business data on volumes to which they have access. In this lesson, you will learn how to maintain the integrity of disk volumes and to optimize those vol umes by performing defragmentation and by setting storage limits through disk quotas.
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Create QR In Visual Basic .NET
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After this lesson, you will be able to
Monitor and maintain disk integrity using CHKDSK Monitor and improve disk performance using Disk Defragmenter Configure and monitor user disk storage using Disk Quotas
Estimated lesson time: 20 minutes
CHKDSK
CHKDSK, or Check Disk , is a tool available in Windows Explorer or from the command-line that allows you to scan a disk volume for file system errors and, optionally, to test for and attempt to recover bad sectors on your hard disk. To use Check Disk from Windows Explorer, open the properties dialog box for the vol ume you want to check. On the Tools tab, click Check Now. In the Check Disk dialog box, as shown in Figure 11-4, select the tasks you wish to launch.
Figure 11-4
The Check Disk dialog box
When you select Automatically Fix File System Errors, Check Disk will attempt to fix inconsistencies in the file system catalog, such as files that appear in the catalog but
Lesson 3
Maintaining Disk Storage Volumes
11-25
don t appear in a directory on the volume. Check Disk makes three passes over the drive to examine the metadata, which is the data describing how files are organized on the disk. The passes attempt to ensure that all files on the volume are consistent with the master file table (MFT), that the directory structure is correct, and that the security descriptors are consistent. If you select Scan For And Attempt Recovery Of Bad Sectors, Check Disk makes a fourth pass which tests the sectors in the volume reserved for user data (as opposed to file system metadata, which is always checked). If a bad sector is found, data is recov ered and moved to a good sector if the volume is fault-tolerant; if the volume is not fault-tolerant, data cannot be recovered using Check Disk and must be restored from backup. The bad sector is then removed from active use and future data will not be written to the sector. All files with open handles must be closed before Check Disk can run. If all handles cannot be released (which will be the case if you run Check Disk against a system vol ume), you will be prompted to schedule Check Disk to run when the system is restarted. When Check Disk is running, the volume will be inaccessible to other pro cesses. Depending on the size of the volume, the check options you have selected, and the other processes running on the computer, Check Disk can take a significant amount of time to complete, and it is quite processor- and disk-intensive while it runs. Check Disk can also be run from the command prompt using CHKDSK. Without switches, CHKDSK runs in read-only mode on the current drive. You ll see a report showing disk space usage. CHKDSK supports several switches allowing you to fix file system errors (/f) and bad sectors (/r), just like the Explorer version.
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