> IIRC zpool list includes the parity drives in the disk space calculation
and zfs list doesn't.

> Terabyte drives are more likely 900-something GB drives thanks to that
base-2 vs. base-10 confusion HD manufacturers introduced. Using that
900GB figure I get to both 40TB and 32TB for with and without parity
drives. Spares aren't counted.

I see format/verify shows the disk size as 931GB

Volume name = <        >
ascii name  = <ATA-HITACHI HUA7210S-A90A-931.51GB>
bytes/sector    =  512
sectors = 1953525166
accessible sectors = 1953525133
Part      Tag    Flag     First Sector          Size          Last Sector
  0        usr    wm               256       931.51GB           1953508749
  1 unassigned    wm                 0            0                0
  2 unassigned    wm                 0            0                0
  3 unassigned    wm                 0            0                0
  4 unassigned    wm                 0            0                0
  5 unassigned    wm                 0            0                0
  6 unassigned    wm                 0            0                0
  8   reserved    wm        1953508750         8.00MB           1953525133

I totally over looked the count the spares/don't count the spares issue. When 
they (the manufacturers) round up and then multiply by 48 the difference 
between what the sales brochure shows and what you end up with becomes 
significant.

There was a time when manufacturers know about base-2 but those days are long 
gone.

Thanks for the reply,
Glen
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