Feature

How does HSM and ILM differ from file virtualisation?

It really depends on your definition of file virtualisation. If the definition is broad enough, it might include HSM capabilities. Embracing ILM is a bit trickier, because ILM is so broadly defined already.

But, generally speaking, one of the basic premises of HSM is the ability to archive or move data off to another location. HSM leaves a stub file where the data was so that the application "thinks" the data is still there. At the same time, we define virtualisation as having emulation, aggregation and abstraction attributes. Well, we've emulated the file's presence, and I'd say that falls into the realm of virtualisation.

This is slightly different from archiving (aka data movement) in which the files and directories are moved completely.

Go to the beginning of the File Virtualisation FAQ Guide.


Email Alerts

Register now to receive ComputerWeekly.com IT-related news, guides and more, delivered to your inbox.
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

This was first published in June 2007

 

COMMENTS powered by Disqus  //  Commenting policy