Size vs. Size on disk

[creative_username]

I've noticed that picture albums take substantially more size on disk compared to their actual size on my system. For example: 358 MB uses 8.72GB size on disk, 18.5GB uses 26.8GB size on disk, and overall, 819GB uses .99TB size on disk. Is this normal or is something wrong?

The only thread I found related to this was locked after flaming.

I'm 99.9% sure I set my system up originally using the freenas gui.

 

[MrToddsFriends]

Are you seeing this in Windows when looking at a Samba share? Samba (or whatever software component involved) seems to round up the size of each single file to the next multiple of 1 MiByte (2^20 Bytes), affecting the value of size on disk as shown by Windows. At least this is what I'm observing in Windows 10. I didn't dig further into that.

 

[SweetAndLow]

Compression might come into play.

 

[creative_username]

Yes, I'm using windows to look at a samba share. lz4 compression is running on the dataset in question.

 

[brando56894]

Could be related to the parity bytes, what pool configuration are you using?

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