[SOLVED] Size on my internal drive and external hard drive

Dec 19, 2021
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Hello,

I'm new here and I was wondering if someone can be kind enough to help me work a small problem out.

I have an internal hard that's 29.1TB in capacity. It's been filled and there is 938GB remaining.

I also have my stuff backed up on 3 external hard drives (Seagate) making up the size overall size (6TB, 18TB and 16TB). The space remaining across the 3 drives is 933.8GB.

There is a discrepancy of 4.2GB. I'm not the one who likes wasting space because all these drives were expensive. I've checked internal and external drives for any duplicate files, I've run duplicate apps to check this and it came with nothing.

I checked if there were the same number of files on both the internal and external hard drives, there is, but I discovered much of this were tiny hidden files.

A friend of mine suggested, the external hard drives may have used up more space to store all my data because the way it writes data is different to an SSD. What do you guys think? Does this sound plausible? Or do you have any ideas how I can trace this menace of a file down?

Thank you for your time.
 
Last edited:
Dec 19, 2021
15
1
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No.
There are no 29.1TB drives. Yet.

You may have some device that does an internal RAID 0 between 2x 16TB drives.

So....give us some details on exactly what you have.
No.
There are no 29.1TB drives. Yet.

You may have some device that does an internal RAID 0 between 2x 16TB drives.

So....give us some details on exactly what you have.
Hi,

I have four SSDs (Samsung) in RAID 0 configuration. Each drive is 8TB.
 

USAFRet

Titan
Moderator
Mar 16, 2013
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Hi,

I have four SSDs (Samsung) in RAID 0 configuration. Each drive is 8TB.
Right.

Now, give us some more info.

Size of the array.
32TB (4x8TB) == reported 29.1Tebibyte
What is the actual consumed space?


"6TB, 8TB and 16TB "
6+8+16=30TB == reported 27.2 1Tebibyte
How much space is consumed on each of those physical drives, individually?



If the number of files is the same, you are alomst certainly just looking at a difference in reporting units, or sector size.
 
Dec 19, 2021
15
1
10
0
Right.

Now, give us some more info.

Size of the array.
32TB (4x8TB) == reported 29.1Tebibyte
What is the actual consumed space?


"6TB, 8TB and 16TB "
6+8+16=30TB == reported 27.2 1Tebibyte
How much space is consumed on each of those physical drives, individually?



If the number of files is the same, you are alomst certainly just looking at a difference in reporting units, or sector size.
Tangential to any 'size' thing.....what is this RAID 0 used for?
Sorry, I made a slight mistake. The 16TB is 18TB.

The space on the four SSDs is 28.1TB.

The space on the 18TB is 16.3TB. The space on the 8TB is 6.79TB. The space on the 6TB is 5.04TB/
 

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