Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Question on defragging files

02 Mar 2011   #11
cluberti

Windows 10 Pro x64
 
 

- defragmenting your drive might not show much of a performance increase if the disk is fast and the cache is good, but it doesn't hurt either.


My System SpecsSystem Spec
.
02 Mar 2011   #12
kado897

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bit Service Pack 1
 
 

Quote   Quote: Originally Posted by cluberti View Post
- defragmenting your drive might not show much of a performance increase if the disk is fast and the cache is good, but it doesn't hurt either.
It can hurt if you go at it too heavily. I have had it delete restore points. Even though I use Defraggler I only do quick defrags and individual files.
My System SpecsSystem Spec
02 Mar 2011   #13
cluberti

Windows 10 Pro x64
 
 

If your disk is that fragmented, the problem isn't fragmentation - it's free space. Defraggler is actually quite good at defragmenting drives with low amounts of free space (15-20% free), but no defragmenter should be causing the deletion of restore points, although it can (and does) interact with VSS as would anything that hits the drive hard. Again, this is why defragmenting infrequently (perhaps once or twice a month) is more beneficial than doing it daily, or weekly, on a desktop-class system. On servers this can be different, but you aren't using restore points and such as a recovery solution in those instances, either (I hope!) .
My System SpecsSystem Spec
.

02 Mar 2011   #14
kado897

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bit Service Pack 1
 
 

Quote   Quote: Originally Posted by cluberti View Post
If your disk is that fragmented, the problem isn't fragmentation - it's free space. Defraggler is actually quite good at defragmenting drives with low amounts of free space (15-20% free), but no defragmenter should be causing the deletion of restore points, although it can (and does) interact with VSS as would anything that hits the drive hard. Again, this is why defragmenting infrequently (perhaps once or twice a month) is more beneficial than doing it daily, or weekly, on a desktop-class system. On servers this can be different, but you aren't using restore points and such as a recovery solution in those instances, either (I hope!) .
No I don't rely on RPs but I have found them useful in the past.There is a thread on Defragler deleting RPs on their forum.
Restore points - Piriform Community Forums
My System SpecsSystem Spec
02 Mar 2011   #15
cluberti

Windows 10 Pro x64
 
 

Again, it's not defraggler but the act of defragmenting the volume. The more data on a volume, the more likely defragmenting it will cause RPs to get deleted - VSS can only hold so much data, and the way VSS works means anything that moves (lots of) files around in a short time (thus consuming basically double the space on disk in a short time) can do this. Ultimately, you'll find that Diskeeper, Auslogics, JKDefrag, and even the inbox Windows defrag does this (and I am sure there are other agressive defragmenters that can be listed here as well). It's just a by-product of moving what is essentially the vast majority of both large and small files around on the disk at one time interval on a volume with the default cluster size (4K) rather than using 16K (or higher) cluster sizes. The drawback to that is that files less than 16K or that do not fall nicely on 16K boundaries will use more space than they would on a 4K cluster volume, so pick your poison .
My System SpecsSystem Spec
02 Mar 2011   #16
kado897

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bit Service Pack 1
 
 

Agreed. It's not just Defraggler any heavy defragging will cause loss of RPs which is why I do little and often. When I first used Defraggler to defrag my c: drive which was in a mess. I lost all my RPs.
My System SpecsSystem Spec
02 Mar 2011   #17
cluberti

Windows 10 Pro x64
 
 

I've heard through the grapevine that doing a file defrag only (rather than full) doesn't cause the issue, but that would make sense (it only does a small amount of file moving versus the whole disk).
My System SpecsSystem Spec
02 Mar 2011   #18
Swindon42

I run win 7 64, xp pro 32 and 64
 
 

I have users with huge ost files that won't defrag. I've used the xp util and contig under users login / safe mode / admin, the works. Any suggestions as this really affects outlook performance. (cant kill VP execs, and pst/archive dissabled by GP) Any suggestion would be appreciated.
My System SpecsSystem Spec
02 Mar 2011   #19
cluberti

Windows 10 Pro x64
 
 

Outlook performance is more affected by item number in folders rather than ost fragmentation. I would agree that very large ost files should be kept as contiguous as possible, but it is just as important to keep item counts in folders to 5000 items or less, that your real-time antivirus does not scan ost or pst files, and the user's mailbox is kept as tidy as possible. Having a multi-gb ost is more an indication that you need an archival solution rather than there is an outlook ost perf issue. Outlook prior to 2010 had a 20gb max *st file size, and 2010 raised that to 50gb. However, getting anywhere near that is stretching the performance envelope for jet-based database files like outlook uses.

However, I would say a quick and dirty way to defrag a file that otherwise won't defrag is to move it to another volume, defrag the source volume, and then move it back.
My System SpecsSystem Spec
Reply

 Question on defragging files




Thread Tools




Similar help and support threads
Thread Forum
lost files after defragging
Yesterday I moved around some files of photo's and had a general tidy up of my laptop and after doing so decided to run a defrag - it took 11 passes and now I have lost half of my photo files!!! Any clue if I might be able to find them - I have checked all user files and recycle bin to no avail.
Performance & Maintenance
? About Defragging
Am I right in assuming you dont need to manually defrag Wind 7, it will do it automatically once a week if needed? Just want to make sure. Thanks
Performance & Maintenance
Defragging
right the problem is when i got to disk defragment - my local disk C: doesnt show up to be defragged :/
Performance & Maintenance
Defragging
My System Mechanic says my 3 hard drives need to be defragged. One is my main hard drive, and the other 2 are storage. Can the ones that I use for storage be defragged? I do not want to risk losing anything. Thanks in advance.:sarc:
Performance & Maintenance
Defragging image and/or backup files ?
Is there any harm...or good...in defragging system image and/or weekly backup files either on internal or external backup drives ? Thinkls...Tim
Backup and Restore
defragging on XPM?
Is it necessary to run regular defrags on XPM like normal desktops?
Virtualization


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 17:23.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App