Wrong space information between Web-GUI And System

[m1gu3l]

Hi,
Actually I' have a raidz1 with 3 HD SATA III 4TB ,called "ZPOOL1". The Web-GUI report 7.1TB for this pool like a image.

But my system command "zpool list" show a diferent space (10.2TB).


My Question is .This is a problem or normal behavior ?

Aditional information :
FreeNAS Version : 9.1.1-RELEASE
Hard Disk's : 3 X 4TB STBD4000400
Motherboard : Asus H87M-PLUS
Procesor : Intel core i7-4770

Thanks in advance.

 

[Dusan]

This is the normal behavior. The GUI shows you the "usable" capacity (e.g. how much data you will be able to store). zpool list gives you the capacity of all devices in the pool. You are using RAIDZ1, capacity of one drive is used for parity and therefore the numbers differ.
4 TB (power of 1000, unit used by drive manufacturers) = 3.63 TiB (power of 1024, unit used by FreeNAS/ZFS).
With RAIDZ1 you get to use the capacity of 2 drives: (3 - 1) * 3.6 TiB = 7.2 TiB (the GUI shows 7.1 TiB as FreeNAS reserves some capacity for swap and some capacity is also consumed by various metadata).
zpool list outputs: 3 * 3.6 TiB = 10.9 TiB, the total capacity of all devices.

 

[cyberjock]

I guess this is a good week to have that question asked.. 3 times in 2 days! The bad part is there's no good search term to search for the answer.. hehe.

 

[m1gu3l]

Hi @Dusan. Thank you very much for response. Now all is clear for me.

I guess this is a good week to have that question asked.. 3 times in 2 days! The bad part is there's no good search term to search for the answer.. hehe.​

Well, in my humble opinion, I think if this is a relatively common question should be added to the FAQ section. :)

 

[cyberjock]

And now we shoot for #4!

http://forums.freenas.org/threads/mismatch-between-partition-and-zfs.16710/