Wasted space at 5TB

[willsy]

Hello,

I recently swapped an 8TB drive and copied the data to a 14TB drive. The drive is called DATADISK5 as per below status output. As per below, it shows up with 5TB 'wasted space'. But this can't be right as the parity file is just over 5TB which matches the largest set of data on the disk. Is this just an error in the calculation (somehow)? The array is fully synced...

TY for any advice... I suppose it's not a problem as such. Just a little annoying for my OCD... I just cannot work out why this is showing! :-)

   Files Fragmented Excess  Wasted  Used    Free  Use Name
            Files  Fragments  GB      GB      GB
    3689       0       0       -    5628     251  95% DATADISK1
    3490       0       0       -    5746     202  96% DATADISK2
    2382       0       0       -    2726     225  92% DATADISK3
     831       0       0       -    3812     113  97% DATADISK4
    3759       0       0  5923.7    5100    2836  64% DATADISK5
 --------------------------------------------------------------------------
   14151       0       0  5923.7   23013    3629  86%

[AJas]

I think that 5923.7 GB wasted is the amount that cannot be assigned to Free GB because Parity Disk has not enough space to generate parity data for this.
Currently everything is fine, because you don't use this space yet, but you clearly see that of that 14TB disk you can use only less than 8TB in total - otherwise you will run out of space on parity drive.

[willsy]

Thank you for the explanation. This makes sense now! :-) I have an 8TB parity drive at the moment. I plan to add another 6TB (as split parity) once needed.

[willsy]

I added my 6TB as split parity (making up 14TB in parity disks total) and now I get the following:

SnapRAID status report:

   Files Fragmented Excess  Wasted  Used    Free  Use Name
            Files  Fragments  GB      GB      GB
    3689       0       0       -    5628     250  95% DATADISK1
    3490       0       0       -    5746     200  96% DATADISK2
    2382       0       0       -    2726     223  92% DATADISK3
     831       0       0       -    3812     112  97% DATADISK4
    3760       0       0   -30.3    5103    8756  36% DATADISK5
 --------------------------------------------------------------------------
   14152       0       0     0.0   23016    9543  70%

So much happier with this now! :-)