3.6TB not 4TB or even 3.9TB when using RAID-Z

[tmacka88]

Why does it tell me that I only have 3.6TB available when I have 3X2TB HDDs in RAID-Z array. Shouldn't it have 4TB or even 3.9TB? Or is there actually more space but it says a lower number?

thanks

 

[Roadblock]

a 2tb is really 1.81tb so 1.81x2=3.62tb

 

[matthewowen01]

there are 2 ways of measuring kilo, mega, giga etc. each is either 1024 or 1000 of the last. drive manufactures use 1000, everyone else uses 1024. this gives the perceived discrepancy.

 

[Gabriel Rodolfo Perez]

Thanks for the info guys, just added a 4tb drive to the NAS and saw this, a little mad but glad knowing its not an error.

 

[joelmusicman]

The exact same thing happens in Windows, but at least FreeNAS is kind enough to use the correct term TiB (tibibyte).

 

[cyberjock]

The exact same thing happens in Windows, but at least FreeNAS is kind enough to use the correct term TiB (tibibyte).

RED ALERT! RED ALERT! Someone used the word "kind" on this forum!

Oh.. wait.. he was referring to the OS, not the users or moderator. Crisis averted!

 

[joelmusicman]

RED ALERT! RED ALERT! Someone used the word "kind" on this forum!

Oh.. wait.. he was referring to the OS, not the users or moderator. Crisis averted!

Cyber: You're very kind to people's data by giving them correct advice... :)

 

[cyberjock]

LOL! :D

 

[jgreco]

cyberjock is just posting as rapidly as he can to get past that 10,000 post mark ... :)

 

[cyberjock]

whoa.. did I pass 10k!?

jgreco.. you editing my post count!?

 

[jgreco]

Wow, that was fast...

10,084 ... you're a Velociposter, cyberjock.

Your new avatar!

 

[jgreco]

actually what that needs is to have a keyboard photoshopped in there, haha