Archive for September, 2009
User and Group Quotas in the 7000 Series
When ZFS was first developed, the engineering team had the notion that pooled storage would make filesystems cheap and plentiful, and we’d move away from the days of /export1, /export2, ad infinitum. From the ZFS perspective, they are cheap. It’s very easy to create dozens or hundreds of filesystems, each which functions as an administrative [...]
What is Shadow Migration?
In the Sun Storage 7000 2009.Q3 software release, one of the major new features I worked on was the addition of what we termed “shadow migration.” When we launched the product, there was no integrated way to migrate data from existing systems to the new systems. This resulted in customers rolling it by hand (rsync, [...]