PerfectDisk Question

  • Thread starter Thread starter cbv
  • Start date Start date
C

cbv

Drive is NTFS, compressed, 10% freespace.
Does this mean files more freespace is needed for defrag to work? How much?

______________________________________
Portion of log:

2/29/2004 9:08:44 PM Elapsed Time: 00:01:35
2/29/2004 9:08:44 PM CPU Time: 00:01:01
2/29/2004 9:08:44 PM Total Files Scanned: 134213
2/29/2004 9:08:44 PM Number of Fragmented Files: 39244
2/29/2004 9:08:44 PM Number of Fragmented Directories: 47
2/29/2004 9:08:44 PM Number of Excess Fragments: 499936
2/29/2004 9:08:44 PM Percent Fragmented: 34.2
2/29/2004 9:08:44 PM Defrag Only Optimization ran out of freespace while
defragmenting Drive D:\.

Thanks,

Chris
--
 
Chris,

You indicate that there is 10% free space available. What is not provided
is the amount of free space usable to defragmenters - free space outside of
the MFT Reserved Zone. If you analyze the drive using PerfectDisk and look
at the stats, PerfectDisk will tell you the breakdown of free space inside
and outside of the Reserved Zone.

- Greg/Raxco Software
Microsoft MVP - Windows File System

Disclaimer: I work for Raxco Software, the maker of PerfectDisk - a
commercial defrag utility, as a systems engineer in the support department.

Want to email me? Delete ntloader.
 
Hi, Greg.
Thanks for replying...

Here's the analysis log: (I've also included a TXT file in case you can't
read this reply's format)

Drive Health
Entity Status Fragmentation Factor
Number Excess Fragments
_____________________ ______ ________________ _______ ______________
File Fragmentation Alert 34
41398 564283
Directory Fragmentation Good 0 65
1325

Entity Status Fragmentation Factor
Size Excess Fragments
_____________________ ______ ________________ _______ ______________
Largest Free Space Alert 100
0.1 MB
MFT Fragmentation Alert 45
153.2 MB 17
Metadata Alert 35
94.3 MB 6766


File Organization Summary
File Type Number MB
% of Partition
________________________________ ________ _________ ___________
Rarely Modified 103316
20522.1 MB 77 %
Occasionally Modified 4187 1431.5
MB 5 %
Frequently Modified 14082 3211.1
MB 12 %
Directory 19820
62.4 MB 0 %
Boot 0
0.0 MB 0 %
Excluded 17
250.0 MB 1 %
Free space outside the MFT Reserved zone N/A 1036.9 MB 5 %
Free space inside the MFT Reserved zone N/A 1.2 MB 0
%
____________________________________ _______ __________ ___________
Totals 141422 26515.1 MB 100 %

Greg Hayes/Raxco Software said:
Chris,

You indicate that there is 10% free space available. What is not provided
is the amount of free space usable to defragmenters - free space outside of
the MFT Reserved Zone. If you analyze the drive using PerfectDisk and look
at the stats, PerfectDisk will tell you the breakdown of free space inside
and outside of the Reserved Zone.

- Greg/Raxco Software
Microsoft MVP - Windows File System

Disclaimer: I work for Raxco Software, the maker of PerfectDisk - a
commercial defrag utility, as a systems engineer in the support department.

Want to email me? Delete ntloader.
Click to expand...
 
You have a couple of things going on here...

Because the $MFT and related NTFS metadata is highly fragmented (it is not
movable online), free space is highly fragmented with the largest contiguous
free space 0.1MB in size.

There is only 5% usable free space on the drive (free space OUTSIDE of the
MFT Reserved Zone)

I would suggest that you perform an offline defrag and then try the online
defrag again.

As this drive is compressed, when a defragmenter goes to "move" a file, the
file system first must uncompress the file and then re-compress the file.
This also isn't going to help things with the limited amount of free space
that you have available on this drive.

- Greg
 
Back
Top