Lower Back No Space Between Disk How Can This Be Fixed

: Apr 11, 2021

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I'm a little confused between free space and Over Provisioning on my Samsung SSD's

I have Over Provisioning set to 10% and thought this was to keep a portion of the drive free to help with performance and the life of the drive.
If I recall correctly when I applied the Over Provisioning it reduced the capacity of the drive so why is it that if I don't keep a certain amount of the allocated space free that Samsung magician tells me there is not enough free space on the drive.
Will it cause any harm or issues if I ignore the warning?
Just to be clear, I'm not talking about filling the SSD to 100% but when I get the warning with over 100GB free it does make me wonder what it's on about.

: Sep 22, 2010

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Is it a SATA or NVMe SSD?

Does Disk Management show 10% unallocated space?

If you examine the drives in the Defragment and Optimize application, do you see any reference to provisioning?

: Mar 16, 2013

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A defined OP is pretty much the same as you just leaving space free.

With OP space predefined, you can fill up the space you do see to 100%.

Or, you can just leave it alone, and mentally know that you shouldn't fill it up past XX %.

The drive firmware shuffles data around among all the cells, for wear leveling.
OP does not wall off a particular chunk of cells to be used later.

: Apr 11, 2021

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I have 1x NVMe (970 EVO) and 3x SATA (870 EVO, 860 EVO and 850 PRO)
Samsung magician says each drive has a 10% Over Provisioning set
I'm fairly sure when I enabled OverProvisioning the size of the drive was reduced so would confirm it defined but in that case, why does Samsung Magician tell me that there is not enough free space if I fill the drive

I can get some screenshots later if it helps

: Mar 16, 2013

: 148,065

: 9,492

: 175,890

: 23,163

why does Samsung Magician tell me that there is not enough free space if I fill the drive
I can get some screenshots later if it helps

Yes, screenshots would help here.

Not enough free space for what, precisely?

: Apr 11, 2021

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: Mar 16, 2013

: 148,065

: 9,492

: 175,890

: 23,163

If I add more to the drive

Add what?

: Apr 11, 2021

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I copied COD from a different drive just to increase how much was on the drive but it does not matter what its added Samsung Magician still gives the same error when there is plenty of space on the drive.
The error is constant and not a result of trying to copy more data then there is free space

: Mar 16, 2013

: 148,065

: 9,492

: 175,890

: 23,163

How large was this COD copy?

If you try to copy a 1MB file, what happens?

It looks like COD for PC takes 175 GB, if copying from another drive maybe OP is also copying saves and mods and updates. Perhaps that is what is happening. As USAF said OP, it will be easier to assist if we know the size of the folder(s) you are copying.

: Apr 11, 2021

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Sorry I said COD but it's actually COD warzone, 78.8GB.
With 145GB free on the drive it should fit with no issues and does copy over fine.
Its only Samsung Magician that's giving any error about free space.

The issue isn't the moving of the files, I am just querying about the error that Samsung magician is giving as it does not make any sense.

: Sep 22, 2010

: 7,516

: 358

: 35,890

: 857

145 / 838 = 17%
221 / 838 = 26%

It would appear that the free space threshold for warnings is between 17% and 26%, so I would expect that there is a 20% or 25% setting somewhere, either hard-coded in Samsung Magician, or a configurable option in the program.

ISTM that the 10% of overprovisioned space does not impact this calculation.

: Mar 16, 2013

: 148,065

: 9,492

: 175,890

: 23,163

Right.
That's probably just a hardcoded percentage in Magician.
Much like the 10% in FIle Explorer. Go over that 10% free on a partition, and it flips from blue to red.

: Apr 11, 2021

: 7

: 0

: 10

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: Mar 16, 2013

: 148,065

: 9,492

: 175,890

: 23,163

: Jun 15, 2020

: 159

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: Mar 16, 2013

: 148,065

: 9,492

: 175,890

: 23,163

Yes.
In a data center with many drives, you want to set a specific amount of OP. You have less control over 'how much' each drive is filled up.

In a consumer use with a couple of drives, specific OP not so important, because you can see that manually in your daily use.

: Sep 22, 2010

: 7,516

: 358

: 35,890

: 857

DWPD = Daily Workload Per Day ???

Isn't that a tautology?

Typically, Samsung
DC SSDs are set to provide 6.7% of capacity for OP by default, but the user can manually adjust the size of the space if he or she
requires additional OP depending on the user environment.
How do I calculate the OP ratio?

OP Ratio Formula: OP (%) = ((Physical Capacity – User Capacity) / User Capacity) * 100

Ex) When 120 GB of a 128 GB SSD is used as the user capacity while 8 GB is assigned to the OP, the OP (%) is ((128 – 120) / 120) * 100 = 6.7 %.

This doesn't make sense.

The actual capacity of the NAND array would be 128 GiB, not 128 GB, and the capacity available to the user would be 120 GB.

So the OP ratio is ...

(128 GiB / 120 GB) - 1 = 14.5%

Last edited: Yesterday at 2:50 PM

: Jun 15, 2020

: 159

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DWPD = Daily Workload Per Day ???
Isn't that a tautology?

Drive Writes Per Day
1 Drive Write = drive size

: Sep 22, 2010

: 7,516

: 358

: 35,890

: 857

Drive Writes Per Day
1 Drive Write = drive size

From Samsung's tech note:

A sufficient OP space decreases the NAND usage by improving the efficiency of internal NAND operations. It has the advantage of increasing the daily workload per day (DWPD) usable during the warranty period.

It' s either "Daily Workload" or "Workload per Day".

"Daily Workload Per Day" is a tautology.

tau·tol·o·gy
(tô-tŏl′ə-jē)
n. pl. tau·tol·o·gies
1.
a. Needless repetition of the same sense in different words; redundancy.
b. An instance of such repetition.

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