2009/8/9 chris scott <[email protected]>: > > not a zfs thing is happens with all os and file systems. Basically HD > manufacturers quote their capacities in base 10 ie 1 TB = 1000000000 bytes. > File systems are calculated in binary therefore the calculation they use is > 1024 x 1024 x 1024 = 1099511627776. Slightly more as you can see. > > Therefore 1 GB is os terms is 1073741824 > > therefore hd capacity in GB is > > 1000000000000/1073741824 = 931.322575 > > The extra you see is it due to HD manufactures slightly over capacity the > drives >
Hi, What I meant was, I was seeing 931MB instead of 1.6TB (2x1TB disks) but this was because I didn't read about zfs properly (they recommend 3 or more disks. In the man page for zpool it says: "A raidz group with N disks of size X with P parity disks can hold approximately (N-P)*X bytes [...] The recommended number is between 3 and 9" so, I'll wait till I get an array before implementing zfs. In the meantime, I'm using gconcat. Sorry for the noise. -- John _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[email protected]"
