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[CrystalDiskInfo] Which reading is the true writes written by me on my SSD?

Freezanator
Go to solution Solved by ARikozuM,
Just now, Freezanator said:

So, NAND is the ones written by me?

Total HOST is you. 

Just now, Freezanator said:

Also, why is the Total Host Writes so much?

Some SSD's use compression to minimize the wear on the NAND. It seems odd though considering the ratio.

I'm kinda confused between the Total Host Writes and the Total NAND Writes reported by CrystalDiskInfo. Which one is the true reading of MY writes and what does the other one mean? Screenshot below. Thanks! :) 

Screenshot (55).png

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You need CrystalDiskMark to find the true write/read speeds.

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1 minute ago, ARikozuM said:

You need CrystalDiskMark to find the true write/read speeds.

No, I'm not trying to find the write/read speeds. I'm trying to find out HOW MUCH I have written onto my SSD. Now, there are write readings, Total Host Writes and Total NAND Writes. Which one shows how much was written by ME? (For example, I downloaded a 1 MB picture which is equivalent to 1 MB of writing)

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2 minutes ago, Freezanator said:

No, I'm not trying to find the write/read speeds. I'm trying to find out HOW MUCH I have written onto my SSD. Now, there are write readings, Total Host Writes and Total NAND Writes. Which one shows how much was written by ME? (For example, I downloaded a 1 MB picture which is equivalent to 1 MB of writing)

Total HOST = That installation of Windows (or whatever OS) has written.

Total NAND = All HOST's have written total.

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I'd interpret host writes as what has been send to the drive from the system, and NAND writes is what actually hit the NAND. The difference is a bit bigger than I expect... Could it be using a data compressing controller? Sandforce ones are known to do that, but I don't know what this SSD uses. 

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Just now, ARikozuM said:

Total HOST = That installation of Windows (or whatever OS) has written.

Total NAND = All HOST's have written total.

So, NAND is the ones written by me? Also, why is the Total Host Writes so much?

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Toshiba PC L200 1 TB HDD »« Microsoft Windows 10 Home »«

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Just now, Freezanator said:

So, NAND is the ones written by me?

Total HOST is you. 

Just now, Freezanator said:

Also, why is the Total Host Writes so much?

Some SSD's use compression to minimize the wear on the NAND. It seems odd though considering the ratio.

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I´m personally not a huge fan of Crystal diskmark as a SSD benchmark tool.

Because it gives me allot of conflicting numbers compaired to other tools.

And it comes with allot of crap with it.

I personally prefer AS-SSD.

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Further thought: Sandisk have their own SSD health utility, so try downloading that and see what it says.

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21 minutes ago, ARikozuM said:

Some SSD's use compression to minimize the wear on the NAND. It seems odd though considering the ratio.

This SSD doesn't use compression, AFAIK.

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1 hour ago, ARikozuM said:

Total HOST = That installation of Windows (or whatever OS) has written.

Total NAND = All HOST's have written total.

I cannot verify your first statement. I reinstalled Windows 10 recently(and that includes deleting the partitions and re-creating them), and my host writes are still the same(but higher than before due to me writing data still), and that value is about 30TB. And of course the fact that the two are so close together provides more evidence that you are incorrect. 

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Capture.PNG

 

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16 minutes ago, Godlygamer23 said:

I cannot verify your first statement. I reinstalled Windows 10 recently(and that includes deleting the partitions and re-creating them), and my host writes are still the same(but higher than before due to me writing data still), and that value is about 30TB. And of course the fact that the two are so close together provides more evidence that you are incorrect. 

 

CrystalDisk isn't too accurate as far as I've seen. The controllers on SSD's also don't seem to hold a count for individual users/systems (i.e. motherboard/OS). I'll have to do some more digging and look at my own drives for their info. 

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37 minutes ago, ARikozuM said:

snip

What I find interesting is that my SSD swings the other way around compared to the above, where the total NAND writes are really high vs host. I'm curious to see what your testing comes up with since I've always wondered what the difference between host and NAND writes were. My SSD is the Sandisk Extreme 2, but my Sandisk Extreme Pro (Home NAS) has the exact same SMART data attributes.

Spoiler

Capture2.PNG

 

1 hour ago, Godlygamer23 said:

-snip-

What I also find interesting is that your SSD's E1 (Host Writes) SMART data value is EE24D in hex, or 975,437. It doesn't seem to having a matching GB value (I even tried GB to GiB) like my own SSD (See my E9, F1, and F2 SMART data value in the above spoiler).

 

Pretty interesting though on the differences reported on the different SSDs for host vs NAND writes.

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14 minutes ago, scottyseng said:

What I find interesting is that my SSD swings the other way around compared to the above, where the total NAND writes are really high vs host. I'm curious to see what your testing comes up with since I've always wondered what the difference between host and NAND writes were. My SSD is the Sandisk Extreme 2, but my Sandisk Extreme Pro (Home NAS) has the exact same SMART data attributes.

  Reveal hidden contents

Capture2.PNG

 

What I also find interesting is that your SSD's E1 (Host Writes) SMART data value is EE24D in hex, or 975,437. It doesn't seem to having a matching GB value (I even tried GB to GiB) like my own SSD (See my E9, F1, and F2 SMART data value in the above spoiler).

 

Pretty interesting though on the differences reported on the different SSDs for host vs total writes.

The way I've understood it is that NAND is the total lifetime writes whereas the HOST is that particular system's writes to the drive (whether it's the OS or motherboard I have no idea).

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Storage: Samsung - 850 EVO-Series 500GB 2.5" Solid State Drive 
Storage: Samsung - 960 EVO 500GB M.2-2280 Solid State Drive
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Storage: Western Digital - BLACK SERIES 3TB 3.5" 7200RPM Internal Hard Drive
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20 minutes ago, scottyseng said:

What I find interesting is that my SSD swings the other way around compared to the above, where the total NAND writes are really high vs host. I'm curious to see what your testing comes up with since I've always wondered what the difference between host and NAND writes were. My SSD is the Sandisk Extreme 2, but my Sandisk Extreme Pro (Home NAS) has the exact same SMART data attributes.

  Reveal hidden contents

Capture2.PNG

 

What I also find interesting is that your SSD's E1 (Host Writes) SMART data value is EE24D in hex, or 975,437. It doesn't seem to having a matching GB value (I even tried GB to GiB) like my own SSD (See my E9, F1, and F2 SMART data value in the above spoiler).

 

Pretty interesting though on the differences reported on the different SSDs for host vs NAND writes.

I've benchmarked this drive a fair bit using CrystalDiskMark - I wonder if benchmarks can throw off the reported data. 

"It pays to keep an open mind, but not so open your brain falls out." - Carl Sagan.

"I can explain it to you, but I can't understand it for you" - Edward I. Koch

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18 hours ago, porina said:

Further thought: Sandisk have their own SSD health utility, so try downloading that and see what it says.

I have the utility, it is called SanDisk SSD Dashboard but it says nothing about the total writes and reads on my SSD. It only shows How much is being used and drive health as well as some other tools and features such as TRIM. :) 

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Toshiba PC L200 1 TB HDD »« Microsoft Windows 10 Home »«

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