I use a pair of similar devices at work, and they do get the job done for what they're designed to do--backups. If you're not saving the same data over and over again, then you'll never see any better compression than what you'd get with gzip.
The drives are typically set up over NFS of CIFS as a disk based storage addition to your backup software (think NetBackup or Networker here). Our environment is currently seeing about 15x compression over our retention period. Increasing that retention period would increase our ratio.
If you're thinking about getting one of these, keep in mind that an initial full backup of your environment will have to fit into the native storage on the device. The savings are seen when you do your next full backup, and the next, and the next. But if you're trying to fit 5TB native onto a 3TB storage device, you'll never even get off the ground.
1 Newton = 1N = 1 kilogram*meter/second^2, which is a mass * acceleration. Makes sense, if you buy into the whole F=ma thing.
1 "gram-force" would then be 0.001N.
The force of a spring is proportional to the displacement from it's position of equilibrium, F = -kx. k here would be the spring constant. If F = -kx and F = ma, then -kx will have to have the same dimensions as a Newton. k then would be in terms of kg/s^2 (with x being measured in meters)
All that being said, it doesn't make much sense for the manufacturer to let us know the spring constant, because most people can't wrap their head around the concept of what a mass per second per second really is. Using mass, essentially a measure of resistance to acceleration from a force, is a more intuitive quantity for the average user.
"Since it's fair to assume that every user will have spend most of his or her life on earth, one gram will have a gravitational attraction to the earth with a force equal to one newton. For practical purposes, 1 gram-force = 1 newton."
Boiler plate contracts such as this are limited by state laws. I did some research in this area a year or two ago while reviewing my employment contract.
I found that in California, it had been previously upheld in court that anything an employee creates outside of his work environment, without using company resources can not be considered for ownership by the employing organization.
The only other thing that may bite you in the ass is non-compete agreements you may have with your employer.
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I use a pair of similar devices at work, and they do get the job done for what they're designed to do--backups. If you're not saving the same data over and over again, then you'll never see any better compression than what you'd get with gzip.
The drives are typically set up over NFS of CIFS as a disk based storage addition to your backup software (think NetBackup or Networker here). Our environment is currently seeing about 15x compression over our retention period. Increasing that retention period would increase our ratio.
If you're thinking about getting one of these, keep in mind that an initial full backup of your environment will have to fit into the native storage on the device. The savings are seen when you do your next full backup, and the next, and the next. But if you're trying to fit 5TB native onto a 3TB storage device, you'll never even get off the ground.
1 Newton = 1N = 1 kilogram*meter/second^2, which is a mass * acceleration. Makes sense, if you buy into the whole F=ma thing.
1 "gram-force" would then be 0.001N.
The force of a spring is proportional to the displacement from it's position of equilibrium, F = -kx. k here would be the spring constant. If F = -kx and F = ma, then -kx will have to have the same dimensions as a Newton. k then would be in terms of kg/s^2 (with x being measured in meters)
All that being said, it doesn't make much sense for the manufacturer to let us know the spring constant, because most people can't wrap their head around the concept of what a mass per second per second really is. Using mass, essentially a measure of resistance to acceleration from a force, is a more intuitive quantity for the average user.
Boiler plate contracts such as this are limited by state laws. I did some research in this area a year or two ago while reviewing my employment contract.
I found that in California, it had been previously upheld in court that anything an employee creates outside of his work environment, without using company resources can not be considered for ownership by the employing organization.
The only other thing that may bite you in the ass is non-compete agreements you may have with your employer.