Blown away with this product for compression of SQL Server backups (http://www.hyperbac.com/products/sqlserver/). I’m testing a eval copy on some development servers now and really impressed with the results. There is a hit on the CPU , but it reduces the time to backup , the size of the backup and you can even restore from the backup files without extracting them first.
Basically, it creates a service that uses native WIN Api which monitors io system for the creation of certain file types. The monitoring can be configured for specific types and paths. When a monitored extension is used in a native SQl server T-SQL backup command that is to write a file to one of the monitored file extensions. it steps in to broker the I/O Stream to disk. It does not alter you system or user databases or add sql objects. It’s down in the file I/O level. Pretty awesome.
The licensing model is by physical or virtual server and not by CPU, etc. Sent an inquiry to the support department and got a response back promptly. Wish that would happen with the folks we already paid for teh product and support. UPDATE — They Even Followed up a few days later.