But it is our only file server. They used both the Windows defrag and Defraggler. You are right and you are wrong. Let's say w have a dynamically expanding hard drive for a virtual machine, as it grows the parts of the file may disperse across the physical hard drive of the host , and a defrag would consolidate these parts so that they are contiguous on the drive or closer to contiguous, which means less movement to read and write to and from the file.
SO you gain speed increase on the host reading the file. But you can also see a performance increase on the VM, because you are dealing with large virtual drive files that the VM sees as a hard disk so it still works like a hard disk. As files in the hard drive file are fragmented there is more need to move around the file, which still in turn means moving around the virtual hosts physical drive because the file takes up so much space on the host drive.
But with any dynamic disk or thin disk for the VMware side, moving of blocks inside the guest only expand the disks space without any actual content being in their place, the blocks move and the disk grows and the space used it more than needs be.
Be aware from a VMware perspective it also messes with CBT, which is what backups use, if tiered storage is used it is recommended not to, there are lots of reasons why not and a few for it, the choice ultimately is yours.
I read somewhere that defragging a virtual disk from within the VM was cruising for corruption. But then, you can believe everything you read on the Internet. There is an exception. The Defrag utility in windows R2 is now called "optimize drives".
If you are using a modern version of vSphere that supports UNMAP and have met all the recquirements like VM hardware version, advanced settings, etc you can auto-shrink VM's and reclaim dead space. It's not really a defrag, but it is a use for that tool. Note, you can also and should when supported unmap at the storage array level too. I usually do not need to defrag Virtual Servers as they run on a schedule by default on Windows.
If you check the optimization is scheduled for Weekly frequency on any server and up. I concure. It's been a while since I have looked, testing, but I thought also that server all together stopped defrag when it could tell that it was a virtual.
Thank you for the info dbeato. It has been a while since I looked at the server. Only in testing. Lets look at the typical conditions that cause file level fragmentation, and that's mostly allowing a volume at guest level to get very full and then having a high degree of small file deletions and changes. The underlying storage should just be blocks as Rod-It indicates and not make a difference.
I've never held much faith in low utilization volumes being defragged because the OS itself should be managing it to some extent. This isn't Win95 running on FAT. However, the fact remains the last time I checked VMware's site on this their explanation was fuzzy as mud. NetApp isnt' a product I know well, however I have read articles about them - if the storage does the block placement, which is usually the case, then the guest doesn't know where that block has been wrote and doesn't care, but because the storage handles block placement, fragmentation can be a lot less than it would be with a physical disk.
It's obviously more detailed that than, but it depends on the storage and what assigns the blocks location. I am looking at getting my VCP. There are so many options out there when searching. I received a fair amount of experience with ESXi working towards my associates, should have at the end of the Fall semester. I am not looking at taking one of the expensive boot camps. The defrag tool has USB formatting capabilities along with disk usage monitoring features.
This tool can resize and format disk drives. It is a most lightweight free disk defragmentation software which occupies minimal space on your system and helps you defrag Windows 10, 8, 7 and other versions. With the multiple processes of installing and uninstalling of files in your system, the files tend to save in huge chunks on your hard drive. Here, Disk Speedup tool comes handy as it will defrag your hard drive automatically and also sort out all fragmented files consecutively.
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The user interface is provided with several command-line switches to control the program execution. This best disk defragmenter application is available as a standard free version and advanced paid pro version.
For basic computer optimization, the free version of the application is sufficient. Wise care tool is provided with registry cleaner along with options to backup and restore the registry entries. This application can also clean temporary files, unused shortcuts, unwanted usage history, and unnecessary files to enhance the performance of the system. This genuine tool is used widely for optimizing the performance of the system. It can compile fragmented files into a single file thereby reducing the space occupied by the files.
Perfect Disk tool can also prevent fragmentation. Intelligent space management of the tool will provide an accelerated performance of the system. T monitoring facilities of the tool will watch the status of the system drives and creates alerts if necessary.
With this best disk defragmentation software for Windows in , you will get three different services — disk defragmentation, duplicate file check, and inefficiency check. This software can work with both traditional hard drives and solid state hard drives. You can run automatically and manually this tool. The best feature of the software is that it can run in the background while you are working on your PC.
This software has the ability to boot files present in your computer and relocate them to the place from where they can be easily accessed. It is compatible with Windows 10, 8. Using this disk defragmenter, you can start to defrag process manually or schedule automatically on a recurring basis. The automatic feature is the best as it keeps on scanning your hard drive from time to time in search of fragmented files. The user interface is simple and can be operated by the person with minimal skills.
With this tool, you will get the registry scan option where you can exclude the file from the scan. I am well pleased with this product. As with all IObit software it is easy to install, use and very reliable. Just set it up and forget it. Smart Defrag has a very small memory foot print so it won't slow down your system.
Definitely recommended! It was perfect for them, except the English language. So I invested for IObit in the French translation. From now on, the French IT magazines strongly recommend Smart Defrag, including with Windows 10 Optimiser, for a more robust and accurate diagnosis with options to speed up the system startup. That I appreciate very much. Subscribe to keep you updated on products updates and special offers via email.
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