Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?
Slashdot Deals: Deal of the Day - Pay What You Want for the Learn to Code Bundle, includes AngularJS, Python, HTML5, Ruby, and more. ×

Submission + - RAID trust issues: Windows or cheap controller? 1

NicApicella writes: My new system has two sparklin' SATA drives which I would like to mirror. After having been burned by a not-so-cheap, dedicated RAID controller, I have been pointed to software RAID solutions. I now stand in front of two choices two choices for setting up my RAID: A Windows 7 RC software RAID or a hardware RAID done by the cheap integrated RAID controller of my motherboard.
Based on past experiences I have decided that only my data is worth saving (setting up a system is easier on the soul than loosing years worth of basically everything) — that's why the RAID should mirror two disks (FAT32) that are not the boot disk (= do not contain an OS or any fancy stuff). Of course, such a setup should secure my data: Should a drive crash, I want the system up and running in no time. But that's not enough: Even more importantly, I want any drive and its data to be as safe and portable as possible (that's the reason for choosing FAT32), no matter whether the OS (it wouldn't be the first time Windows fiddled with some part of a hard disk it shouldn't have) or the controller (of the "cheap motherboard integrated"-type) screw up big time.
So, which should I choose? Who should I trust more? Microsoft's Windows 7 or the probably cheapest RAID controller on the market? Any other (decent) solution simply isn't in my budget...
Data Storage

Graphene Could Make Magnetic Memory 1000x Denser 123

KentuckyFC writes "The density of magnetic memory depends on the size of the magnetic domains used to store bits. The current state-of-the-art uses cobalt-based grains some 8nm across, each containing about 50,000 atoms. Materials scientists think they can shrink the grains to 15,000 atoms but any smaller than that and the crystal structure of the grains is lost. That's a problem because the cobalt has to be arranged in a hexagonal close packing structure to ensure the stability of its magnetic field. Otherwise the field can spontaneously reverse and the data is lost. Now a group of German physicists say they can trick a pair of cobalt atoms into thinking they are in a hexagonal close packing structure by bonding them to a hexagonal carbon ring such as graphene or benzene. That's handy because the magnetic field associated with cobalt dimers is calculated to be far more stable than the field in a cobalt grain. And graphene and benzene rings are only 0.5 nm across, a size that could allow an increase in memory density of three orders of magnitude."

Use the Force, Luke.