POOL STORAGE SIZE CLARIFICATION

[lutin7812]

Hi, new to TrueNas I need some clarification on pool sizes:
I've setup a DELL R620 box with 10 x 1TB hard drive in RAID-Z3. So total size would give in usable capacity 5.85 TiB.
I've created a block volume of 2.5 TiB for ISCSI vmware datastore, so why is it now 3.35 TiB used and avail 4.70 TiB? Why (used+avail) = 8.05 Tib?

Thank's for clarification.
Olivier

 

[Evertb1]

Taking slop space allocation and 20 % free space limit in account, 4,7 Tib available sounds about right. Take a look here if you wan to do some calculations the easy way.

 

[ornias]

Taking slop space allocation and 20 % free space limit in account, 4,7 Tib available sounds about right. Take a look here if you wan to do some calculations the easy way.

True, but I don't think the UI takes the 20% free space "limit" into account, as it's a soft limit and not a hard limit.

Also: total pool available shouldn't be below the highest available of the underlaying datasets and zvols. Unless some quota and/or reservations where set :s