Question about Disk Space Available

[Kuro Houou]

So I currently have 3 4TB Drives in a RaidZ1 configuration.

When I look at my volume manager I see

Name - Used - Available - Compression - Compression Ratio - Status
v01 - 8.0 TiB (73%) - 2.8TiB - -blank- - -blank- - Healthy
v01 - 5.4 TiB (76%) - 1.7TB - lz4 - 1.01x - -blank-

I am confused as to why its showing two v01's.. did I configure something wrong?

When I do a df -h from the console I get the following,

v01 7.0T 5.4T 1.7T 76% /mnt/v01
v01/.system 1.7T 2.6M 1.7T 0% /var/db/system
v01/.system/cores 1.7T 1.0M 1.7T 0% /var/db/system/cores
v01/.system/samba4 1.7T 3.0M 1.7T 0% /var/db/system/samba4
v01/.system/syslog-8512aab5762941f5bbdb4b3e6e3b2ce6 1.7T 618k 1.7T 0% /var/db/system/syslog-8512aab5762941f5bbdb4b3e6e3b2ce6
v01/.system/rrd-8512aab5762941f5bbdb4b3e6e3b2ce6 1.7T 192k 1.7T 0% /var/db/system/rrd-8512aab5762941f5bbdb4b3e6e3b2ce6


Just wondering if this looks normal? I thought I should have about 8 TB free after using RaidZ1 with 3 4TB drives...

 

[SweetAndLow]

What version of FreeNAS?

 

[Kuro Houou]

I am on 9.3 now

 

[Kuro Houou]

Looking at the numbers more makes me think the first line, v01 - 8.0 TiB (73%) - 2.8TiB - -blank- - -blank- - Healthy is how much disk space is used overall (total space on drives). When you add the two you get 10.8 TiB which is equivalent to roughly 12 TB (my 3 x 4TB drives)

But the second line, v01 - 5.4 TiB (76%) - 1.7TB - lz4 - 1.01x - -blank- is actually how much space is available when you take into account RaidZ1. So its about 7.1 TiB available in a RaidZ1 config. Or about, 7.8 TB. I guess that makes sense now... Think I answered my own question :)