Data Fragmentation Occurs When You Use Ntbackup.exe to Restore Data to a Clean Volume (297268)
The information in this article applies to:
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Server, Enterprise Edition 4.0
- Microsoft Windows NT Workstation 4.0
This article was previously published under Q297268 SYMPTOMS After you restore data from a tape to a clean NTFS file
system volume, many of the restored files may be fragmented on the disk.
CAUSE This problem occurs because Ntbackup.exe does not give NTFS
any information about how big the file that is being restored is. Because of
this, NTFS must pre-allocate standard size runs of clusters to hold the file.
This means that it typically allocates too much space that is later returned to
the free cluster pool when the file is fully restored. These small runs are
then used again for restoring later files, and this caused file fragmentation
to occur. STATUSMicrosoft does not plan to resolve this problem in Windows
NT 4.0. This problem
was first corrected in Windows 2000 Service Pack 3.RESOLUTIONTo resolve this problem, obtain the latest service
pack for Windows 2000. For additional information, click the following article
number to view the article in the Microsoft Knowledge Base: 260910 How to Obtain the Latest Windows 2000 Service Pack
MORE INFORMATION To reduce fragmentation, defragment your disks at regular
intervals.
| Modification Type: | Major | Last Reviewed: | 5/15/2006 |
|---|
| Keywords: | kbbug kbfix kbOSWin2000fix kbWin2000sp3fix kbHotfixServer KB297268 |
|---|
|