2014 November

Why Sanoid’s ZFS replication matters

Published by Jim Salter // November 19th, 2014

If you’re an old hand in the storage game and are familiar with rsync (which is an amazing tool, btw) you might not be quite sure why block-level replication matters. So, let’s do a thought experiment What if you want daily offsite DR of an entire VM image? Let’s say the image is about 2TB in size. If you just copy the whole thing, like with FTP or SCP or any other simple copy tool, […]

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Sanoid is up on Github now!

Published by Jim Salter // November 17th, 2014

For those developers among you who are eager to get your hands on the code, you can find it now on GitHub – bon appetit! https://github.com/jimsalterjrs/sanoid/

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  • Recent Thoughts

  • Demonstrating ZFS pool write distribution
  • One of my pet peeves is people talking about zfs “striping” writes across a pool. It doesn’t help any that zfs core developers use this terminology too – but it’s sloppy and not really correct. ZFS distributes writes among all the vdevs in a pool.  If your vdevs all have the same amount of free space available, this will resemble a simple striping action closely enough.  But if you have different amounts of free space on different […]