Mirror Pool 2x1 TB+ 2x4 TB = 4 TB?

[brando56894]

After reading some articles and debating on how I want to upgrade my storage going forward I decided to convert my RAIDZ pool that consists of 3x3 TB and 1x4 TB drives to a mirrored pool. I created a mirrored pool from the 2x1 TB drives I had in a separate Stripe pool, along with 2 new 4 TB drives that I just bought so that I have sufficient space to copy the data from the RAIDZ pool.

I was under the assumption that I would have close to 5 TB worth of space since there is no parity to calculate and (2x4)+(2x1)= 10 but somehow I only have 4.5 TB of space. Where did the extra 500 or so GB go?

 

[Darren Myers]

can you show us a screenshot of your storage GUI screen.

 

[brando56894]

What screen do you want specifically (Volumes, Volume Manager, View Disks, Volume Status)?

 

[Darren Myers]

storage volumes please

 

[brando56894]

I found my issue, damn unit conversions! 5 TB = 4.54747 TiB I hate that they use base 10 in marketing and computers use base 2, it makes things like this so confusing since it's easy to miss.

 

[Darren Myers]

I found my issue, damn unit conversions! 5 TB = 4.54747 TiB I hate that they use base 10 in marketing and computers use base 2, it makes things like this so confusing since it's easy to miss.

That's just what i was thinking i wanted to see the storage layout to be sure, you can always use this too https://jsfiddle.net/Biduleohm/hfqdpbLm/10/embedded/result/