Is there any maximum storage amount on SSD's?

[steffeeh]

Is there any maximum recommended percentage of total storage that you shouldn't exceed on an SSD, and if so why?
I've heard something about it somewhere, and I thought I should look it up.

 

[Flyfisherman]

No not really.

AnandTech: The Truth About SSD Data Retention - AnandTech

All in all, there is absolutely zero reason to worry about SSD data retention in typical client environment. Remember that the figures presented here are for a drive that has already passed its endurance rating, so for new drives the data retention is considerably higher, typically over ten years for MLC NAND based SSDs. If you buy a drive today and stash it away, the drive itself will become totally obsolete quicker than it will lose its data. Besides, given the cost of SSDs, it's not cost efficient to use them for cold storage anyway, so if you're looking to archive data I would recommend going with hard drives for cost reasons alone.

AnandTech: Samsung SSD 840: Testing the Endurance of TLC NAND - AnandTech

Of course, if you write 20GiB a day, the estimated lifespan will be halved, although we are still looking at several years. Even with 30GiB of writes a day the 256GiB TLC drive should be sufficient in terms of endurance. Write amplification can also go over 10x if your workload is heavily random write centric, but that is more common in the enterprise side - client workloads are usually much lighter.

Furthermore, it should be kept in mind that all SMART values that predict lifespan are conservative; it's highly unlikely that your drive will drop dead once the WLC or MWI hits zero. There is a great example at XtremeSystems where a 256GB Samsung SSD 830 is currently at nearly 6,000TiB of writes. Its WLC hit zero at 828TiB of writes, which means its endurance is over seven times higher than what the SMART values predicted. That doesn't mean all drives are as durable but especially SSDs from NAND manufacturers (e.g. Intel, Crucial/Micron, Samsung etc.) seem to be more durable than what the SMART values and datasheets indicate, which isn't a surprise given that they can cherry-pick the highest quality NAND chips.

Understanding TLC NAND - AnandTech

 

[boosted1g]

Anything over 75% will start noticing a slow down, anything above 90 will be significantly slower

Due to way the SSD drive caches and performs TRIM is why getting above 75 slows it down
In regards to being above 90 that goes for all drives and is because of the way files are stored on a drive.

 

[Flyfisherman]

Anything over 75% will start noticing a slow down, anything above 90 will be significantly slower

Due to way the SSD drive caches and performs TRIM is why getting above 75 slows it down
In regards to being above 90 that goes for all drives and is because of the way files are stored on a drive.

Now, that is incorrect, The SSD already has reserved space.
However if You are talking just straight user data.
Any SSD on the market will already have a spare space for for this. This is managed by the SSD controller firmware and not necessary needs to be done by the user. That is overkill.
The Usually spare space will be around 7-15% and wil not be noticed by the user.

However, for those few that seek the very ultimo, an additional spare space and 15% of the SSD will do the trick, just leave it unformatted and the SSD controller will take care of it. But that its just a little bit overkill.

Best regards from Sweden

 

[steffeeh]

Tack för din input 😉