Hi, On 14/02/2012 12:55 PM, Peter Ross wrote:
I do not have enough private data to fill a hard disk these days so it could be an option for him too.
Or slice the disks in two partitions of equal size and use them as a mirror.
With BTRFS, you can mirror content or not depending on your requirement. You can even choose to mirror some files/dirs and not others. And to make it even more versatile, you can apply different RAID versions throughout as well. The problem for me with BTRFS is that it is too new and if you want the latest and greatest, then you always need the latest and greatest kernel -- something that doesn't sit well with me when I want systems that are as stable as possible. I'm sure that BTRFS time will come, but it will likely be a while for me. I like ZFS, but the licensing issues worry me, as does the "Oracle ownership" situation. It certainly seems like BTRFS is something very much to look forward to and probably shouldn't be used for any kind of critical data or systems for some time -- although Oracle has committed to using production BTRFS in OL very soon. btw Avi did a good talk at linux.conf.au this year.... but his comment about an older copy worries me here, it seems clear that with COW in use, the only way that would be useful with a single copy of the data block is if that data block has changed and then you only have the option of reverting back to the older version of that block. Write it once, never change it, never have mirrors of the data and you'll lose that block if the checksum shows corruption. -- Kind Regards AndrewM Andrew McGlashan Broadband Solutions now including VoIP Current Land Line No: 03 9012 2102 Mobile: 04 2574 1827 Fax: 03 9012 2178 National No: 1300 85 3804 Affinity Vision Australia Pty Ltd http://www.affinityvision.com.au http://adsl2choice.net.au In Case of Emergency -- http://www.affinityvision.com.au/ice.html