There is no question in my mind that Docker was, by far, the most disruptive technology of 2015. What barely registered on the radar for many in 2014, became something shiny in Q1, advanced to thinking material in Q2, reached "you have to be crazy to run that in production" by Q3, and is now on everyone's three year plan.
If you haven't heard of Docker, I'm not sure what cave you've been living in but here's the short story:
In case you haven't been paying attention, Linux is in a mad dash to copy everything that made Solaris 10 amazing when it launched in 2005. Everyone has recognized the power of Zones, ZFS and DTrace but licensing issues and the sheer effort required to implement the technologies has made it a long process.
As I originally blogged, I was hoping to use EMC snapshots to perform server-less/network-less backups. EMC provides two main tools for managing snapshots in this type of situation:
The PowerSnap Module supposedly automates taking snapshots for the purpose of backups, while Replication Manager supposedly provides a much more robust package.
With Replication Manager you might create a policy to take a snapshot every five minutes, keep the last 10, and use those for backups whenever necessary.
To make a long story short, Replication Manager is useless for LUNs with ZFS. According to EMC, this won't change in the near future. PowerSnap also has no support for taking snapshots of LUNs with ZFS on them so basically EMC has no server-less backup offerings for Solaris with ZFS.