4 Feb
2005
4 Feb
'05
2:53 p.m.
Steve Losen wrote:
Instead of actually copying the Oracle instance data (which would be either a 500G LUN or a 500G NFS file) you create a virtual copy. To do this, you would allocate a new inode for the copy, but link in the same data blocks as the original inode. This would be MUCH faster than copying the data, practically instantaneous. Of course the two copies would be in the same volume.
In 7.0 you can create "writable snapshot" by creating a volume based on an existing snapshot. Initially this volume is identical with the snapshot.
--
Eino Tuominen