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Smart Defrag - Check auto-defrag options for SSD

Z

zagood

Diamond Member
I just fired up Smart Defrag (v1.40) for my apps HDD (30% fragmented!) and started a defrag. My C: drive is an SSD. I noticed that an auto-defrag started running on C:. Most of you already know, but for those who don't, you shouldn't defrag an SSD.

To avoid auto-defragging your SSD (or any other drive) in Smart Defrag...

1. You can de-select "Enable Auto Defrag" from the Auto Defrag menu. or...
2. v1.45 has a new option: "Do not display flash drivers and solid state drivers." (sic)

More info on v1.45 here: http://blog.iobit.com/best-support-for-solid-state-disk_509.html
 
Nothinman said:
Or just don't worry about it and let Vista/Win7 do it's thing...
Click to expand...

This. The once a week default defrag built into Windows should be sufficient, as NTFS isn't very susceptible to fragmentation in the first place. Windows 7 (I believe Vista does as well) disables defragmentation on SSDs by default.
 
Golgatha said:
This. The once a week default defrag built into Windows should be sufficient, as NTFS isn't very susceptible to fragmentation in the first place. Windows 7 (I believe Vista does as well) disables defragmentation on SSDs by default.
Click to expand...

Well, the Windows NTFS driver isn't all that smart. NTFS fragments a lot more than most other filesystems, but the effect of fragmentation isn't anywhere near what the people selling defrag tools would like you to believe.
 
defraggers other then windows 7 built in defrag aren't smart. they waste a lot of time and effort performing useless defragging to the point I will say not to use them at all.

windows7 (And vista as well) have an intelligent defrag algorithm that only perform defrag where it will be beneficial.
and in windows 7 it automatically enables defrag for spindle drives and disables it for SSDs.

And technically, the problem addressed by TRIM is related to fragmentation which does occur in SSDs (as well as the fact it writes in 4k chunks but only deletes in 512k chunks). TRIM allows SSDs to deal with it, an external program cannot because there is an abstraction layer between the addresses given to the OS and the real location of the data (which shifts, due to wear leveling).
 
Last edited:
taltamir said:
the other way around... defraggers OTHER then windows 7 built in defrag aren't smart. they waste a lot of time and effort performing useless defragging to the point I will say not to use them at all.

windows7 (And vista as well) have an intelligent defrag algorithm that only perform defrag where it will be beneficial.
and in windows 7 it automatically enables defrag for spindle drives and disables it for SSDs.
Click to expand...

I meant the NTFS driver itself and it's algorithms for allocating new files and space, not the defrag tool.
 
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