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  • Defrag starting when not scheduled. What is triggering the defrag

    - by leroyclark
    I have a fileserver that is starting a defrag around 2:00 PM everyday. This is killing performance as it runs for ours becuase this is a file server and has multiple drives. All scheduled tasks regarding defrag have been disabled. I have verified that it is accessing the data drives(using SysInternals tools). The reason I might have though otherwise was the event log has multiple entries regarding defragging a db file related to shadow copies. Oh yes these drives take shadow copy snapshots multiple times per day but the times of them don't coincide with the defrag task. There is nothing in the event logs regarding defrag except those noted above in relation to shadow copies. I'm out of ideas looking for what is starting these jobs. One possiblility is that the drives are not being defgramented, but being analyized to determine if they need to be defragmented. I manually ran an analysis and the cpu usage(by dfrgntfs.exe) seems to be similar to what I'm seeing everday while the defrag process is running. However I've found no setting that schedules this analysis.

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  • VM Virtual guest machine disk defrag improves performance, myth or reality?

    - by jafin
    In operation of a virtual Vmware or Hyper-V guest typically advice is given to defrag the host and virtual disk images so to result in improved performance. Something like a cmd: vmware-vdiskmanager -d <file.vmdk> works great. Yet I can't find any qualitive evidence that suggest defraging inside the guest VM improves performance. Does anyone have advice or evidence that doesn't come from a commercial defragger's whitepaper that suggests inside guest defragging helps?

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  • Is Defrag "invisible" in Windows 8?

    - by Clay Shannon
    After (buzzard's luck) installing Visual Studio 2013 RC a couple of days ago, and then Visual Studio 2013 RTM yesterday, I thought I should defrag, what with all that install/uninstall activity going on. So I mashed the Window key and typed Defrag, and up came the "Defrag" search result. I mashed the Enter key and ... nothing ... Is Defrag working behind the scenes? I see no icon on the task bar ... Is there a trick to defragging beyond what I did?

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  • Dig Deeper in Windows Defrag via Command Prompt

    - by Matthew Guay
    Windows users have learned over the years that they need to keep their computers defragmented to keep running at top speed.  While Windows Vista and 7 automatically defrag your disks, here’s some ways you can dig deeper into Windows Defragmenter Latest Features How-To Geek ETC The 50 Best Registry Hacks that Make Windows Better The How-To Geek Holiday Gift Guide (Geeky Stuff We Like) LCD? LED? Plasma? The How-To Geek Guide to HDTV Technology The How-To Geek Guide to Learning Photoshop, Part 8: Filters Improve Digital Photography by Calibrating Your Monitor Our Favorite Tech: What We’re Thankful For at How-To Geek Snowy Christmas House Personas Theme for Firefox The Mystic Underground Tunnel Wallpaper Ubunchu! – The Ubuntu Manga Available in Multiple Languages Breathe New Life into Your PlayStation 2 Peripherals by Hooking Them Up to Your Computer Move the Window Control Buttons to the Left Side in Windows Fun and Colorful Firefox Theme for Windows 7

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  • what damage can be caused if scandisk is not run before defrag

    - by Justin Gregoire
    Hello, I would like to know what the damage to a drive can be if a scandisk is not performed before a disk defrag. I have looked up some sites that say a scandisk should be run to correct any issues that may be apparent on the system, making sure that the drive is free of errors before a disk defrag is done. I have to perform a defrag on a computer without having physical access to it (using remote connection). I know that the scandisk requires a reboot to the system (causing me to lose my connection) which would be difficult to restart physically if the system does not come back on by itself once rebooted (this has happened before). Any suggestions? Thank you.

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  • Azure Blob storage defrag

    - by kaleidoscope
    The Blob Storage is really handy for storing temporary data structures during a scaled-out distributed processing. Yet, the lifespan of those data structures should not exceed the one of the underlying operation, otherwise clutter and dead data could potentially start filling up your Blob Storage Temporary data in cloud computing is very similar to memory collection in object oriented languages, when it's not done automatically by the framework, temp data tends to leak. In particular, in cloud computing,  it's pretty easy to end up with storage leaks due to: Collection omission. App crash. Service interruption. All those events cause garbage to accumulate into your Blob Storage. Then, it must be noted that for most cloud apps, I/O costs are usually predominant compared to pure storage costs. Enumerating through your whole Blob Storage to clean the garbage is likely to be an expensive solution. Lokesh, M

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  • Defrag/TRIM settings for hybrid hard drive?

    - by Joel Coehoorn
    I recently acquired a momentus XT hybrid hard drive. This is a tradition spinning HDD with a small SSD portion for frequently used files. Normally, you are not supposed to defrag SSDs, as it does not help performance and can significantly reduce the life of the drive. But you do need to defrag an HDD to keep good performance. So where does that leave us for hybrid drives? Do I need to turn off defragging in Windows to preserve the SSD portion? Is the on-disk controller smart enough to handle defragging correctly? Is there some utility I need to set it up that I missed? Additionally, for SSDs you normally want to check for and enable TRIM support... but this makes no sense for a HDDs. Where does that leave us for hybrid drives? Should I try to enable TRIM or not?

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  • HTG Explains: Do You Really Need to Defrag Your PC?

    - by The Geek
    Ask any PC tech person how to make your computer faster, and almost every one of them will tell you to defrag your PC. But do you really need to manually trigger a defrag these days? The quick answer: You don’t need to manually defragment a modern operating system. The longer answer: let’s go through a couple scenarios and explain so you can understand why you probably don’t need to defrag. HTG Explains: Do You Really Need to Defrag Your PC? Use Amazon’s Barcode Scanner to Easily Buy Anything from Your Phone How To Migrate Windows 7 to a Solid State Drive

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  • Exchange 2003 Offline Defrag

    - by Tom
    Looking to do my first offline defrag this weekend on Exchange 2003. Our Exchange DB is on E drive and server1 is the temporary location where there is sufficient space. Dismount the store and change to c:\program files\exchsrvr\bin Does this look like the correct command to run? eseutil /d "e:\exchdata\priv1.edb /t"\\server1\exchtemp\tempdfg.edb" Is there anything I should be aware of such as backups running at the same time etc?

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  • Why can't I defragment my SQL 2008 .mdf file?

    - by LesterDove
    I am defragmenting a badly (95%) fragmented drive upon which large (35 gig) SQL Server 2008 .mdf files live. After defragmenting and viewing the exception report, I see that the production .mdf file that I'm most interested in could not be defragmented. I initially figured it was because MSSQL had an exclusive lock on the file, so I detached it and tried again. No luck - this particular .mdf file could not be defragmented. What am I missing? Most online references suggest that I should be able to file defrag an .mdf A note: yes, I'm talking about file defragmentation, not index defrag, which is already being done routinely, and which I'll re-run after this. Thanks! What am I missing?

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  • How does ecryptfs impact harddisk performance?

    - by Freddi
    I have my home directy encrypted with ecryptfs. Does ecryptfs lead to fragmentation? I have the feeling that reading files, displaying folders and login became continuously slower and slower (although it was not noticeably slow at the beginning). The hard disk makes a lot of seek noise even if I open only a text file. In /home/.ecryptfs I see many big archives (that probably contain the encrypted files), so I'm wondering if Linux file system online defragmentation gains anything here. What options do I have to increase performance? Should I decide whether I maybe better do without encryption?

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  • Not able to Defrag my drive for shrink even using PerfectDisk on Windows 7

    - by Mithun Sasidharan
    I want to partition my c drive which has over 450gb capacity of which hardly 30gb is being used. I deleted the pagefile.sys and also disabled hibernate and cache memory. I then defragmented and consolidated free space using PerfectDisk 12 and also run a boot time defragmented. Now what remains is Metadata files that preventing me from shrinking the volume beyond half the size if disk. Please tell me what to do?????

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  • How to remove NTFS system files from a previous Vista installation

    - by Boldewyn
    I'm trying to shrink my system partition under Win Vista. It's all fine, except that in front of the last 300MB of the volume sits a single file, that cannot be moved by defrag or other means from its position. It's called C:\$Extend\$UsnJrnl:$J, and my assumtion is, that it is left from a previous installation of Vista, when I re-set up the system. Now, googling for this kind of files brings interesting results, but no solution to my problem: Files left on the disk can become ownerless in a new setup of Windows and inaccessible (even for administrators). To be able to access them again, I found the tip to use takeown to re-assign them to the Admin group (or anyone else). Works like a charm for normal files, but not for the C:\$Extend stuff. The C:\$Extend folder is a system folder of the NTFS file system, where the journal is stored (especially in a file called $UsnJrnl:$Data, whose name is surprisingly close to mine). You can delete the journal with fsutil usn /delete C:, however, this doesn't work from within the booted system (as I found out trying). Also, I'm not quite sure of the side effects. You can't move the NTFS own files with standard defrag tools. The same holds, by the way, for not accessible files. Every bit of knowledge out there is targeted to either not accessible files or the $Extend NTFS stuff, but noone addresses my problem involving both, an inaccessible system file. Question: How can I remove this file, or at least how can I move it on the disk?

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  • Resize a new database to predicted maximum size

    - by John Oxley
    Currently I have a SQL Server database which is about 2 Gb. I know over the next year it's going to grow to a maximum of about 10Gb. Hard drive space is not an issue in the slightest. Is there a down side to resizing the datafile to 20Gb now, then defragmenting the hard drive? Should I resize the log file to 1Gb as well? Something ridiculously large so that fragmentation doesn't happen there either. With this question I would like to avoid the datafile becoming fragmented on the disk itself, but I don't want to negatively impact performance.

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  • Does an ESEUTIL defrag of an Exchange store also perform an integrity check/repair on it?

    - by Bigbio2002
    Earlier this morning, store.exe fuzzled up in one way or another, which necessitated a restart of our Exchange server. It came back online with no errors or problems, all the transaction logs replayed successfully, and all the stores mounted as normal. To me, it was just one of those random crashes; however, our consultant suspects it was caused by corruption in one of the stores. Perhaps he's correct, since he has far more experience than me, but that's not the point. To fix the suspected errors, he's planinng to run an ESEUTIL defrag (via PerfectDisk) to fix them, which he claims will also fix any errors present. From what I understand, defrag, verify, and repair are 3 separate actions, and a defrag does not imply any kind of integrity check. Is this correct? Are there any dangers of running a straight-up defrag on a database that might be corrupt? Edit: Here's the first error in the event log, which indicated the start of the problems we were having. Anyone know what it might indicate? Event Type: Error Event Source: Microsoft Exchange Server Event Category: None Event ID: 1000 Date: 11/23/2011 Time: 8:15:47 AM User: N/A Computer: SERVER Description: Faulting application exsp.dll, version 6.5.7638.1, stamp 430e735b, faulting module kernel32.dll, version 5.2.3790.4480, stamp 49c51f0a, debug? 0, fault address 0x0000bef7. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: 41 00 70 00 70 00 6c 00 A.p.p.l. 0008: 69 00 63 00 61 00 74 00 i.c.a.t. 0010: 69 00 6f 00 6e 00 20 00 i.o.n. . 0018: 46 00 61 00 69 00 6c 00 F.a.i.l. 0020: 75 00 72 00 65 00 20 00 u.r.e. . 0028: 20 00 65 00 78 00 73 00 .e.x.s. 0030: 70 00 2e 00 64 00 6c 00 p...d.l. 0038: 6c 00 20 00 36 00 2e 00 l. .6... 0040: 35 00 2e 00 37 00 36 00 5...7.6. 0048: 33 00 38 00 2e 00 31 00 3.8...1. 0050: 20 00 34 00 33 00 30 00 .4.3.0. 0058: 65 00 37 00 33 00 35 00 e.7.3.5. 0060: 62 00 20 00 69 00 6e 00 b. .i.n. 0068: 20 00 6b 00 65 00 72 00 .k.e.r. 0070: 6e 00 65 00 6c 00 33 00 n.e.l.3. 0078: 32 00 2e 00 64 00 6c 00 2...d.l. 0080: 6c 00 20 00 35 00 2e 00 l. .5... 0088: 32 00 2e 00 33 00 37 00 2...3.7. 0090: 39 00 30 00 2e 00 34 00 9.0...4. 0098: 34 00 38 00 30 00 20 00 4.8.0. . 00a0: 34 00 39 00 63 00 35 00 4.9.c.5. 00a8: 31 00 66 00 30 00 61 00 1.f.0.a. 00b0: 20 00 66 00 44 00 65 00 .f.D.e. 00b8: 62 00 75 00 67 00 20 00 b.u.g. . 00c0: 30 00 20 00 61 00 74 00 0. .a.t. 00c8: 20 00 6f 00 66 00 66 00 .o.f.f. 00d0: 73 00 65 00 74 00 20 00 s.e.t. . 00d8: 30 00 30 00 30 00 30 00 0.0.0.0. 00e0: 62 00 65 00 66 00 37 00 b.e.f.7. 00e8: 0d 00 0a 00 ....

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  • what the best and simplest way to find out whether a volume need defrag?

    - by r9r9r9
    I am writing a application that monitor the system's health, user should know when they need to defrag the volumes. What I am thinking is calling the "defrag.exe /A" then analyze the output result to see whether it contains "You do not need to defragment this volume." But it's slow and very bad, I fount that the "Analyze" is really quick on the MyDefrag.exe. Anyone could tell me what's the best and simplest way?

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  • Unable to fetch initial output of "defrag" commad in Windows Server 2008 R2 in WOW64 environment.

    - by Ganesh
    Hi All, [Application & code back ground] I have an MFC application which is executing on Windows Server 2008 R2 in WOW64 environment. In which on user input it defragments the selected drive on the disk. I initiated the process(.i.e. cmd /c defrag –v c:) of defragmentation using the CreateProcess() API, along with this to display output of the process on the main screen I created the pipe using CreatePipe() API. I used PeekNamedPipe() & ReadFile() API to get the output and display. [Problem Area] When the process is launched I am not getting the initial output as below: Microsoft Disk fragmenter Copyright © 2007 Microsoft Crop. Invoking defragmentation on (C:)…. I constantly monitor the output of the process while it is under progress but not able to get any thing as output in the pipe. It seem the process is not doing any thing and appears as if the application is not responding. But after certain period of time, once the process is about to completed I get result along with the initial data. [Sample code] //Pipe created if(0 == ::CreatePipe(&l_hStdOutRead, &l_hStdOutWrite, &l_SecurityAttribute, (DWORD)NULL)) { //Error code } //Process created/launched if (0 == ::CreateProcess(NULL, (LPTSTR)f_csProcessName, &l_stSecurityAttributes, NULL, TRUE, CREATE_NO_WINDOW, NULL,NULL, &l_StartupInfo, &l_CmdPI)) { //Error code } //Read output if (0 == ::PeekNamedPipe(m_hStdOutRead, l_cArrPeekBuffer, (DWORD)NULL, (LPDWORD)NULL, &l_dwAvailable, (LPDWORD)NULL)) { //Return to read again } if (MPLUSFALSE == ::ReadFile(m_hStdOutRead, l_cArrOutput, min(BUFFER_SIZE - 2, l_dwAvailable), &l_dwRead, NULL) || !l_dwRead) { //error code } //Display data. If any one is aware of similar problem or worked on the similar issue please let me know the solution. Thanks in Advance, Ganesh

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  • Why some recovery tools are still able to find deleted files after I purge Recycle Bin, defrag the disk and zero-fill free space?

    - by Ivan
    As far as I understand, when I delete (without using Recycle Bin) a file, its record is removed from the file system table of contents (FAT/MFT/etc...) but the values of the disk sectors which were occupied by the file remain intact until these sectors are reused to write something else. When I use some sort of erased files recovery tool, it reads those sectors directly and tries to build up the original file. In this case, what I can't understand is why recovery tools are still able to find deleted files (with reduced chance of rebuilding them though) after I defragment the drive and overwrite all the free space with zeros. Can you explain this? I thought zero-overwritten deleted files can be only found by means of some special forensic lab magnetic scan hardware and those complex wiping algorithms (overwriting free space multiple times with random and non-random patterns) only make sense to prevent such a physical scan to succeed, but practically it seems that plain zero-fill is not enough to wipe all the tracks of deleted files. How can this be?

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  • Windows 7 inbuilt and 3rd party (de)fragmentation related queries

    - by Karan
    I have a pretty good idea of how files end up getting fragmented. That said, I just copied ~3,200 files of varying sizes (from a few KB to ~20GB) from an external USB HDD to an internal, freshly formatted (under Windows 7 x64), NTFS, 2TB, 5400RPM, WD, SATA, non-system (i.e. secondary) drive, filling it up 57%. Since it should have been very much possible for each file to have been stored in one contiguous block, I expected the drive to be fragmented not more than 1-2% at most after this rather lengthy exercise (unfortunately this older machine doesn't support USB 3.0). Windows 7's inbuilt defrag utility told me after a quick analysis that the drive was fragmented only 1% or so, which dovetailed neatly with my expectations. However, just out of curiosity I downloaded and ran the latest portable x64 version of Piriform's Defraggler, and was shocked to see the drive being reported as being ~85% fragmented! The portable version of Auslogics Disk Defrag also agreed with Defraggler, and both clearly expected to grind away for ~10 hours to completely defragment the drive. 1) How in blazes could the inbuilt and 3rd party defrag utils disagree so badly? I mean, 10-20% variance is probably understandable, but 1% and 85% are miles apart! This Engineering Windows 7 blog post states: In Windows XP, any file that is split into more than one piece is considered fragmented. Not so in Windows Vista if the fragments are large enough – the defragmentation algorithm was changed (from Windows XP) to ignore pieces of a file that are larger than 64MB. As a result, defrag in XP and defrag in Vista will report different amounts of fragmentation on a volume. ... [Please read the entire post so the quote is not taken out of context.] Could it simply be that the 3rd party defrag utils ignore this post-XP change and continue to use analysis algos similar to those XP used? 2) Assuming that the 3rd party utils aren't lying about the real extent of fragmentation (which Windows is downplaying post-XP), how could the files have even got fragmented so badly given they were just copied over afresh to an empty drive? 3) If vastly differing analysis algos explain the yawning gap, which do I believe? I'm no defrag fanatic for sure, but 85% is enough to make me seriously consider spending 10 hours defragging this drive. On the other hand, 1% reported by Windows' own defragger clearly implies that there is no cause for concern and defragging would actually have negative consequences (as per the post). Is Windows' assumption valid and should I just let it be, or will there be any noticeable performance gains after running one of the 3rd party utils for 10 hours straight? 4) I see that out of the box Windows 7 defrag is scheduled to run weekly. Does anyone know whether it defrags every single time, or only if its analysis reveals a fragmentation percentage over a set threshold? If the latter, what is this threshold and can it be changed, maybe via a Registry edit? Thanks for reading through (my first query on this wonderful site!) and for any helpful replies. Also, if you're answering question #3, please keep in mind that any speed increases post defragging with 3rd party utils vis-à-vis Windows' inbuilt program should not include pre-Vista (preferably pre-Win7) examples. Further, examples of programs that made your system boot faster won't help in this case, since this is a non-system drive (although one that'll still be used daily).

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  • Books about Windows Os Programming [closed]

    - by LostInLib
    I'm trying to develop a desktop application which is similar to CCleaner. But I'm having problems with R&D resources... I can't find good books about Windows Operating System Programming Topic Examples; Explaining Windows 7 (or even 8) registry. Which registry entry turn on/off "showing desktop icons" Or, What is Windows registry defrag?, How can you defrag registry?, How can you optimize windows startup for( Windows 7 ) etc. I googled my questions, find msdn-some stackoverflow topics etc. But I can't find a book about low-level explaining current windows 7 operating system... What I'm missing ? Thanks for your any input... and sorry, I don't know is this the right place to ask that question, but I asked anyway...

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  • Rebuilding indexes does not change the fragmentation % for nonclustered indexes.

    - by Noddy
    For starters, I am no DBA and I am working on rebuilding the indexes. I made use of the amazing TSQL script from msdn to alter index based onthe fragmente percent returned by dm_db_index_physical_stats and if the fragment percent is more than 30 then do a REBUILD or do a REORGANISE. What I found out was, in the first iteration, there were 87 records which needed defrag.I ran the script and all the 87 indexes (clustered & nonclustered) were rebuilt or reindexed. When I got the stats from dm_db_index_physical_stats , there were still 27 records which needed defrag and all of theses were NON CLUSTERED Indexes. All the Clustered indexes were fixed. No matter how many times I run the script to defrag these records, I still have the same indexes to be defraged and most of them with the same fragmentation %. Nothing seems to change after this. Note: I did not perform any inserts/ updates/ deletes to the tables during these iterations. Still the Rebuild/reorganise did not result in any change. More information: Using SQL 2008 Script as available in msdn http://msdn.microsoft.com/en-us/library/ms188917.aspx Could you please explain why these 27 records of non clustered indexes are not being changed/ modified ? Any help on this would be highly appreciated. Nod

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  • Windows XP scheduled tasks and defragmenting?

    - by Gathris
    I am trying to set a seduled task to defrag my HDD on a regular basis and following the guide on http://www.microsoft.com/windowsxp/using/setup/learnmore/tips/gehrke1.mspx. It does not work. That process only brings a DOS window which does nothing (well it displays some text about the Microsoft defragging program). I tried using the "%SystemRoot%\system32\dfrg.msc C:" as the command path that is in the start menu but that brings up the program to start a defrag job and doesn't start automatically. What am I missing?

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  • laptop overheating ran defraggler and now its not as hot

    - by Marko
    Trying to diagnose and fix an overheating Acer 5735 laptop, running speedfan and doing general workload to try and cause the overheat conditions. I notice that windows xp is badly fragmented according to defraggler, at 58% fragmentation. So I defrag whilst watching the speedfan window, which was at the start reporting high warning style symbols for all of the sensors. After the defrag, I rebooted and ran a few programs, and even defraggler again and the sensors in speedfan all reported green i.e. not high. Wondering if there is a correlation between windows fragmentation causing the hard drive to work harder and produce more heat inside the laptop? dont want to just assume that the problems are resolved, so either speedfan is not accurate enough or fragmentation can lead to additional hard drive heat? All comments or suggestions welcome.

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  • Does a hard drive "working hard", i.e. when defragmenting or otherwise continuously active, significantly affect a laptop's temperature?

    - by Marko
    Trying to diagnose and fix an overheating Acer 5735 laptop, running speedfan and doing general workload to try and cause the overheat conditions. I notice that windows xp is badly fragmented according to defraggler, at 58% fragmentation. So I defrag whilst watching the speedfan window, which was at the start reporting high warning style symbols for all of the sensors. After the defrag, I rebooted and ran a few programs, and even defraggler again and the sensors in speedfan all reported green i.e. not high. Wondering if there is a correlation between windows fragmentation causing the hard drive to work harder and produce more heat inside the laptop? dont want to just assume that the problems are resolved, so either speedfan is not accurate enough or fragmentation can lead to additional hard drive heat? All comments or suggestions welcome.

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  • How To Safely Eject Your USB Devices From the Desktop Context Menu

    - by Taylor Gibb
    If you are one of those people who don’t safely remove their USB Devices just because you’re lazy, here’s a neat trick to do it from the context menu on your desktop. Even if you are not lazy and just forget, the icon will serve as a mental reminder. So let’s take a look. How to Run Android Apps on Your Desktop the Easy Way HTG Explains: Do You Really Need to Defrag Your PC? Use Amazon’s Barcode Scanner to Easily Buy Anything from Your Phone

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