Novell open audio: Dynamic Storage Technology

The last NOA before BrainShare: Dynamic Storage Technology

This is the official name for what has been known as Shadow Volumes. I've spoken about them many times in the past. I first heard about Shadow Volumes (now Dynamic Storage Technology) at BrainShare last year, but I didn't blog about it. Since then, there have been a few more posts.

June 15, 2006
June 26, 2006
September 13, 2006
November 30, 2006

Yeah, this is exciting stuff. The podcast had more details, here are my notes:

Jason Williams -- Product Manager for OES

• OES2 will include Dynamic Storage Technology
• "We recon about 80% of of that stuff [on very large NCP volumes] could be turned to stale. It's stuff that hasn't been touched in maybe 30 days or more"
• "We have one customer out there with maybe 450 plus terabytes of data, and that's just the unstructured stuff. It doesn't even account for their databases."
• Redirection to the shadow volume is done similar to DFS, with a pointer the client understands and then follows.
• This avoids the migrate/demigrate problem for traditional HSM
• This is linux-only. Not NetWare.
  
• Works for NCP-clients right now, trying to get Samba working... not done yet.
• Can set policies for what to migrated, ModifyDate, AccessDate, FileType, etc.
• Managed through NRM
• Can do stacked policies, a global policy, and policies for specific volumes
• Applies to not just NSS, but to ext3, reiser, xfs, and such.
• Requires an exclusive lock on a file before it can be migrated.
• This is a service on top of a file-system, not a feature of a file-system.
• Monday morning keynote demo! Right there!
• There will be a table in the Technology Lab
  

For more details, listen to the pod-cast.