Trying to create a RAID Z2 pool results in a RAID Z3 pool.

[inntel]

TrueNAS Scale current Beta 1.

Supermicro server with X7DBU motherboard and XEON E5440 CPU.
LSI HBA controller with 12 x Hitachi Ultrastar HUA721010KLA330 1TB hard drives.

I am trying to create a single RAID Z2 pool but ponce it's created it shows up as a RAID Z3 and thus I loose about 1TB of capacity. I know the hardware I'm using is antique but I'm looking for capacity and the data scrubbing, not speed.

I've searched the forums and didn't find anything. Is this a known bug?

 

[sretalla]

Can you show the pool status (which is the part which will specifically show which RAIDZ version the pool is)?

 

[inntel]

The first pic shows the pool with the capacity of a RAID Z3 and the second one labels it as RAID Z2. However when I put a file on the server and looked at the properties from a Linux client it reports it as having 9TB of free space left so I assume then that it is really a RAID Z2.

Thank-you for the response.

 

[NugentS]

How about showing the result of zpool status at the command line?

Incidently are you getting confused by the size of the disks. 1TB != 1TiB. for example a 6TB disk is actually only 5.5TB when in a pool due to the way manufacturers label disks you don't get a binary terrabyte - you get a decimal terrabyte

 

[inntel]

How about showing the result of zpool status at the command line?

Incidently are you getting confused by the size of the disks. 1TB != 1TiB. for example a 6TB disk is actually only 5.5TB when in a pool due to the way manufacturers label disks you don't get a binary terrabyte - you get a decimal terrabyte

This could be the explanation. I ran the zpool status (thanks btw) command and got this info:

truenas3# zpool status
pool: Storage-103
state: ONLINE
config:

NAME STATE READ WRITE CKSUM
Storage-103 ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
So it does show a raidz2 configuration, I am just surprised at how much space the raidz2 takes.