Disc capacty vs available total capacity

[Delgon]

Hey, I have only one drive in my NAS 8TB WD RED which total capacity is 7.27TB but available for use after formatting is only 7.08. Is there any way to somehow get this 200GB without formatting disc and losing everything on the drive? I don't want to format it coz unfortunately, I don't have enough storage elsewhere to copy data from this drive and recopy after format. This is not a system drive as I have a small HDD as a system one. I made this partition some time ago and don't really remember what options I chose and right now it is starting to annoy me a lot that so much space is just wasted.

Here is an SS of storage manager and mentioned drive:
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I'm sorry if there is some kind of solution that I didn't notice but I couldn't find anything.

Thanks for help

[MrVideo]

You won't. The drive is partitioned as per the requirements of the NAS.

[Delgon]

So NAS is just eating 200GB for nothing? Wow, that is so weird and bad.

[Trexx]

So NAS is just eating 200GB for nothing? Wow, that is so weird and bad.

No.. the NAS has other hidden volumes/partitions that it uses for its operation that will not be visible in storage manager/etc.

[Delgon]

But what would it need 200GB for, that's what is weird for me. Given I have other drives for NAS system I thought that other drives would be fully utilized.

[MrVideo]

The OS for starters.

[storageman]

The OS is striped across all drives in a small partition so takes up space.
The (system) volume does not mean the volume with the only bootable OS.

[Delgon]

I understand that I can take some space for OS and other things related to it like SWAP partition for example but 200GB is just overkill for that kind of system. Isn't there really any way to shrink it to a reasonable size?

[Delgon]

As you can see there are SWAP partitions and some other things but they do not take 200GB in total. They take some space on both drives (the same amount) and even final size of disk partition 7911 should be around the "Capacity" value on disk manager which it is (~7.28) but usable capacity is 7.08 so a lot of space is used for something other than system related stuff, system partitions, swap etc. So Raid group in QNAP storage manager shows a correct capacity of 7.28 but usable share capacity is only 7.08 which bothers me a lot.
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[Spider99]

Just accept it and move on - playing with it and changing things are likely to stop the NAS working

if you are that short of space that 200GB matters then you need to consider other options....

[Delgon]

It is just that I consider adding 3 more of them and 800GB is a considerable amount for me considering it is just gone without me knowing why.

[Spider99]

it wont be - i have 8 4tb drives in one raid and i have "lost" 460GB - as i have a static volume it might be more or less using other options

You only have one drive at the moment so the % is high it will be less per disk across mulitples

IIRC the amount used by the system is a % of the whole and is spread across all drives - QNAP are being cautious and making sure they have enough space for SWAP, APPS (unknown by them how many you may install and how much space the files may take up) and system files.

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