Windows 10: New SSD User Trim question

Hi, So finally I made an upgrade to an SSD for use in my boot drive. a 240GB one specifically. I made a fresh install of Windows 10 last week ago in this SSD, went to confirm if TRIM is enabled then confirmed it is on. Now, I went to disk defrag and saw this: Do I click optimize now? Or just let it run by the set schedule?

:)

 

TRIM for SSD drive

I have a new Dell desktop PC with WIN 10. It has a hard drive (D and a SSD (C. In the past I have always defragged my hard drive but I understand that I should not optimize/defrag the SSD - that WIN 10 by default uses TRIM to optimize the SSD. I read
that TRIM is set as a default in WIN 10 and that it optimizes the SSD once a week. But when I look at the properties for the SSD drive, it shows that it has not been optimized for 14 days.

1. How do I know that TRIM is working?

2. If it isn't set as a default, how to I change that?

Thanks.

M Walsh

 

A-Data Ships XPG SX95 and S592 SSDs with New Windows 7 TRIM Firmware

Hmm somethings a miss there, namely the fact there are only 3 features listed twice *Roll Eyes

 

New SSD user questions

If it is clearly defined space then that would suggest that it would not be possible to use that space for wear-leveling thus decreasing the overall lifetime.

I've just read the wikipedia article: Write amplification - Wikipedia

It's slightly confusing as the blurb mentions un-partitioned space while the bar chart mentions free space and TRIM. (relating the level 3 OP)

...after readin a little more i came to this:

"Free user space

The SSD controller will use any free blocks on the SSD for garbage collection and wear leveling. The portion of the user capacity which is free from user data (either already TRIMed or never written in the first place) will look the same as over-provisioning space (until the user saves new data to the SSD). If the user only saves data consuming 1/2 of the total user capacity of the drive, the other half of the user capacity will look like additional over-provisioning (as long as the TRIM command is supported in the system).[28][31]"

so it seems that if the Unallocated space has been TRIMed or never written to, it can be used. So then if you were to partition off a few gb of extra space, if it contained any data it would eventually be TRIMed and contribute towards OP.

Deos anyone know about this more clearly?


Edit - Found a link to a discussion about the topic. http://www.overclock.net/t/775483/d...-you-need-to-leave-unallocated-space-question

One person says definitively 'no,' but it seems it's up for debate. Almost all SSDs come with 7% level 1 OP

Further Edit: http://www.smartstoragesys.com/pdfs/WP004_OverProvisioning_WhyHow.pdf

The OP determines the maximum logical capacity of the drive, but the drive’s consumed logical capacity can change the amount of OP that is effectively reserved.

Not exactly sure what this means, but it could mean that the allocated free space could be used towards OP?

What i get from this is that OP increases the likelyhood of the controller finding a free block to write to, thus increasing performance. Trim renders this function somewhat obsolete as TRIM will erase blocks in the background. Thus having any amount of unallocated free space with TRIM enabled would function very similarly to OP. Another Thing I get from this is that if you use raid, which doesn't support TRIM, then arbitrarily increasing the OP space by setting free unpartitioned space will increase performance of the drive.

Edit (again) - after reading around, it definitely seems that manually OP the disk is a waste of time on newer drives and only relevant for RAID and drives using older controllers.

Edit - Another Source - http://www.edn.com/design/systems-design/4404566/1/Understanding-SSD-over-provisioning

It seems that when using TRIM that you get dynamic OP and so unless you are at 100% capacity of your SSD then having manually set unallocated free space is worthless. This would only be true for newer drives with a decent system of garbage collection though.