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And Why Is Defraging Bad?


We've all been told that SSDs don't last forever and when they die, they just poof and die. One of the most popular blog posts on the topic of defrag and SSDs under Windows is by Vadim Sterkin. December 3, '14 Comments [69] Posted in Win7|Win8 Sponsored By There has been a LOT of confusion around Windows, SSDs (hard drives), and whether or not they are getting automatically defragmented What's the real story?

This is of course true of regular spinning rust hard drives, but the conventional wisdom around SSDs is to avoid writes that are perceived as unnecessary. He can see that defrag is doing something, but it's not clear why, how, or for how long. SSDs can only handle a finite number of writes before things start going bad. Something is clearly running, but what is it doing and why?

Defragment External Hard Drive Windows 7

Vadim's analysis has a lot going on. I've seen statements around the web like this: I just noticed that the defragsvc is hammering the internal disk on my machine. This is just a no-op message. If it reports as an SSD it doesn’t get defraged, no matter what.

However, my comment, while declarative, was wrong. Windows doesn’t defrag SSDs. To my understanding defrag provides no value add on an SSD and so is disabled by default when the installer determines the disk is SSD. Defragment External Hard Drive Mac Full stop.

There's a general rule of thumb or statement that "defragging an SSD is always a bad idea." I think we can agree we've all heard this before. current community blog chat Super User Meta Super User your communities Sign up or log in to customize your list. The short answer is, yes, Windows does sometimes defragment SSDs, yes, it's important to intelligently and appropriately defrag SSDs, and yes, Windows is smart about ho There’s no bug here, sorry. - Me in the Past I dug deeper and talked to developers on the Windows storage team and this post is written in conjunction with them

I made some inquiries internally, got what I thought was a definitive answer and waded in with a comment. Defrag Computer Windows 7 I was thinking it could be TRIM working, but I thought that was internal to the SSD and so the OS wouldn’t even see the IO. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed