qr code in c# windows application Part 5: Managing Windows Server 2003 Storage and File Systems in C#.NET

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Part 5: Managing Windows Server 2003 Storage and File Systems
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Microsoft Windows Server 2003 Inside Out Disk Defragmenter can also be run at the command line using Defrag (Defrag.exe). You can run Disk Defragmenter in analysis mode at the command line by typing defrag a followed by the drive designator. For example, if you want to analyze the fragmentation of the D drive, you d type defrag a d:. To analyze and then defragment a volume if defragmentation is necessary, type defrag followed by the drive designator, such as defrag d:. No parameters are necessary. The complete syntax for Defrag is this:
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defrag volume [-a] [-v] [-f]
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The V parameter is used to display detailed output and the F parameter is used to force defragmentation even if there is low free space on the volume.
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You can perform fragmentation analysis using the report generated from the graphical user interface (GUI) or the command line. Both techniques produce similar results as long as you use the V parameter at the command line. The graphical report is in two sections: The first section provides a summary of fragmentation in all areas checked, and the second section provides information on individual file fragmentation. The command-line report shows only the summary of fragmentation. The summary looks like this:
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Volume Apps (D:) Volume size Cluster size Used space Free space Percent free space Volume fragmentation Total fragmentation File fragmentation Free space fragmentation File fragmentation Total files Average file size Total fragmented files Total excess fragments Average fragments per file Pagefile fragmentation Pagefile size Total fragments = = = = = 55.91 GB 4 KB 50.18 GB 5.73 GB 11 %
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= 13 % = 24 % = 3 %
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= = = = =
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116,409 210 KB 11,874 68,585 1.58
= 768 MB = 1
Part 5: Managing Windows Server 2003 Storage and File Systems
Managing Windows Server 2003 File Systems
Folder fragmentation Total folders Fragmented folders Excess folder fragments Master File Table (MFT) fragmentation Total MFT size MFT record count Percent MFT in use Total MFT fragments = 7,477 = 610 = 3,418
= = = =
123 MB 124,119 98 % 255
Disk Defragmenter provides a summary of the volume s configuration and space usage. In addition, depending on the type of volume you are working with, it reports on the following areas:
Volume Fragmentation
Gives on overview of fragmentation on the volume. Total Fragmentation details the percentage of the total volume that is fragmented. File Fragmentation details the percentage of used space that is fragmented. Free Space Fragmentation details the percentage of unused space that is fragmented. Gives an overview of file-level fragmentation showing the total number of files on the volume, the average size of those files, how many files are fragmented, and the average number of fragments per file. Ideally, you want the number of fragments per file to be as close to 1.00 as possible. In this example, the fragments per file ratio is 1.58, indicating that about 58 percent of files are fragmented into two or more clusters. Gives an overview of how fragmented the page file is (if there s one on the volume). If you followed my advice of setting a fixed page file size, as discussed in the section entitled Tuning Virtual Memory on page 454, the page file shouldn t be fragmented, which is the case here. Otherwise, the page file can get fragmented as it grows in size and is written to new areas of the disk. Gives an overview of folder-level fragmentation showing the total number of folders on the volume and how many folders are fragmented. For NTFS volumes only, gives an overview of fragmentation in the MFT, showing the current size of the MFT, the number of records it contains, the percentage of the MFT in use, and the total number of fragments in the MFT. In this example, the MFT has some fragmentation. But the real concern is that it is at 98 percent of its maximum size. Because of this, the MFT could become more fragmented over time there is still 11 percent free space on the volume, and if it needs to grow it will grow into the free space.
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