[OpenIndiana-discuss] 800GB in 6 discs - 460GB in raidz

[Timothy Coalson]

On Fri, Mar 24, 2017 at 6:44 PM, jason matthews <jason at broken.net> wrote:

>
>
> On 3/24/17 4:33 PM, jason matthews wrote:
>
>>
>> I lost 18TB on 192TB raw pool or about 10% and I am using way more parity
>> disks than you are. my ratio is 1:4 you claim yours is 1:6 but we'll see
>> when you send zpool status p0
>> My 1:4 ratio is not optimal so dont copy this configuration.
>>
>
> This illogical in itself. If 1:4 disks are parity, then i should loose 25%
> not 10%. In any case, send zpool status p0 so we can see what is going on.
>
> As I said, "zpool list" doesn't "remove" the parity storage from the
size.  What you are seeing is the TB to TiB loss due to the disagreement
between drive manufacturers and OSes as to what "Tera" means: (1000/1024)^4
= 0.9095, this marketing or terminology mismatch is where your "missing"
10% actually went.

Tim