What is taking so much space?

[krazos]

Hi,

So Ive got 5x 10TB disks in Raid-z1

Freenas shows this:

Is this really right?
Where did my ~8TB go?

 

[danb35]

5 x 10 TB in RAIDZ1 means (ignoring ZFS overhead) 40 TB of net capacity, which means 36 TiB of net capacity. Volume1 has 13.6 TiB used and 21.5 TiB available, which add up to 35.1 TiB. What ~8TB are you talking about?

 

[krazos]

5 x 10 TB in RAIDZ1 means (ignoring ZFS overhead) 40 TB of net capacity, which means 36 TiB of net capacity. Volume1 has 13.6 TiB used and 21.5 TiB available, which add up to 35.1 TiB. What ~8TB are you talking about?

Yea but why does the Volume1 above show 28 TiB free, but Volume1 below 21 TiB free?

Btw: Nice server you got there! I have the same chassi, motherboard and processors (although Ive got 2670v2). Only 64 GB ram though.

 

[gpsguy]

Disregard line one - that's the raw capacity, before parity.

5 x 10TB, would be about 45TiB (17TiB + 28.3TiB)

Yea but why does the Volume1 above show 28 TiB free, but Volume1 below 21 TiB free?

 

[danb35]

Yea but why does the Volume1 above show 28 TiB free, but Volume1 below 21 TiB free?

http://doc.freenas.org/11/storage.html#view-volumes

Note that in this example, there are two datasets named volume1. The first represents the ZFS pool and its Used and Available entries reflect the total size of the pool, including disk parity. The second represents the implicit or root dataset and its Used and Available entries indicate the amount of disk space available for storage.

 

[krazos]

Ooohh okay, thanks a lot! :)

 

[danb35]

It's amazing what you can learn by reading the manual.

 

[Ericloewe]

It's amazing what you can learn by reading the manual.

The docs team has done a great job with the manual, no doubt about that.
Easily one of the best manuals out there.