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SSD's
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Old 29-03-2019, 18:55   #1
hopperbob
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SSD's

Is it a good idea to defrag a SSD. I'm quite happy with the old drives but what about an SSD?

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Old 29-03-2019, 19:53   #2
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Re: SSD's

Defrag doesn't exist in the SSD world. What does exist is TRIM

https://en.m.wikipedia.org/wiki/Trim_(computing)
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Last edited by Chris; 29-03-2019 at 20:49.
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Old 03-04-2019, 14:57   #3
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Re: SSD's

Never do it. All you do is wear the drive out.
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Old 03-04-2019, 15:42   #4
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Re: SSD's

Windows will automatically Optimise an SSD via TRIM from time to time, just as it'll run a defrag on a HDD
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Old 03-04-2019, 16:02   #5
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Re: SSD's

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Originally Posted by AbyssUnderground View Post
Never do it. All you do is wear the drive out.
Trim will actually extend the life of an SSD.
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Old 08-04-2019, 13:07   #6
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Re: SSD's

Correct, but defragging will shorten it
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Old 08-04-2019, 14:34   #7
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Re: SSD's

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Originally Posted by AbyssUnderground View Post
Correct, but defragging will shorten it
I've never seen an option to defrag an SSD in any machine I've put one in.
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Old 08-04-2019, 14:40   #8
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Re: SSD's

Windows shouldn't let you do it but some 3rd party apps still do.
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Old 08-04-2019, 15:34   #9
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Re: SSD's

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Originally Posted by AbyssUnderground View Post
Correct, but defragging will shorten it
I assumed you were referring to trim as per Ben's post.
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Old 08-04-2019, 15:43   #10
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Re: SSD's

No, sorry. I should've been clearer!
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Old 08-04-2019, 15:48   #11
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Re: SSD's

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Originally Posted by hopperbob View Post
Is it a good idea to defrag a SSD. I'm quite happy with the old drives but what about an SSD?

As discussed above, there is no point in defragging an SSD, because the drive operates quickly enough that you are unlikely to notice any difference in access speeds between a non-fragmented and fragmented file system, but the defrag process will shorted the life of the drive.

As such, most modern defrag utilities (like the one built into Windows) won't let you defrag an SSD. Older ones might let you, but I would still advise against it.
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Old 12-04-2019, 02:01   #12
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Re: SSD's

Windows MAY defrag an SSD, but the only reason it would need it is if the fragments reach a level which would interfere with restore point snapshots.
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Old 12-04-2019, 07:47   #13
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Re: SSD's

Quote:
Originally Posted by Matth View Post
Windows MAY defrag an SSD, but the only reason it would need it is if the fragments reach a level which would interfere with restore point snapshots.

Quote:
Storage Optimizer will defrag an SSD once a month if volume snapshots are enabled. This is by design and necessary due to slow volsnap copy on write performance on fragmented SSD volumes. It’s also somewhat of a misconception that fragmentation is not a problem on SSDs. If an SSD gets too fragmented you can hit maximum file fragmentation (when the metadata can’t represent any more file fragments) which will result in errors when you try to write/extend a file. Furthermore, more file fragments means more metadata to process while reading/writing a file, which can lead to slower performance.

As far as Retrim is concerned, this command should run on the schedule specified in the dfrgui UI. Retrim is necessary because of the way TRIM is processed in the file systems. Due to the varying performance of hardware responding to TRIM, TRIM is processed asynchronously by the file system. When a file is deleted or space is otherwise freed, the file system queues the trim request to be processed. To limit the peek resource usage this queue may only grow to a maximum number of trim requests. If the queue is of max size, incoming TRIM requests may be dropped. This is okay because we will periodically come through and do a Retrim with Storage Optimizer. The Retrim is done at a granularity that should avoid hitting the maximum TRIM request queue size where TRIMs are dropped.
https://www.hanselman.com/blog/TheRe...ntYourSSD.aspx
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