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Fast in the beginning, then slowing down ?


Galka

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Hi,

I have a 4TB disk I have used for about a year (never been defragged). When I ran Windows own defrag it said that only 3% where fragmented. but defragmenting didn't run (stuck at 0%).

Then I tried the Defraggler. And it said that 87% of the files where fragmented.

 

So I started the defrag (with Defraggler) and the first 8% took about 2 hours for each %. But from 9+% it has taken like 8-9 hours per %. it has been running for 2½day now. and only 12% defragged.

 

The drive has like 1TB pics and 2TB video/music files.

My system is not running anything else (closed all non-essential programs)

The drive is my D:/ non OS drive only data storrage

 

 

My question is, is it normal that its farster in the beginning, and then slows down ?

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From my understanding on a traditional mechanical hard disk with moving parts the access speed and write speed will be faster near the beginning of the disk. That's why defrag software tries to move programs and operating system files near the beginning of the disk so programs will load faster, and Windows will startup faster. The further down it gets into the defrag map the closer it gets to the slower areas of the hard disk.

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still, those times are damn slow.

 

I'm wondering if you still have background tasks running; Windows Updates, AV software etc.

I'd reboot the PC into Safe Mode and run DF from there.

Absolutely no extra tasks will be running then.

Backup now & backup often.
It's your digital life - protect it with a backup.
Three things are certain; Birth, Death and loss of data. You control the last.

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Perhaps it is the antivirus software causing the excessive slow speed. Some antivirus scanners will scan every file moved during a defrag therefore temporarily disabling the antivirus real-time protection may allow it to defrag faster. Then again allot of modern antivirus scanners know to calm down when a defrag is taking place at least they do with the built in Windows defrag.

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that seems slow, but you do have roughly 3TB of data that is about 90% fragmented. that's a truck load of data to re-organise in anyone's book.

 

is it an internal or external drive?

Backup now & backup often.
It's your digital life - protect it with a backup.
Three things are certain; Birth, Death and loss of data. You control the last.

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