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Data Storage

Submission + - Hurricane Irene Threatens Northeast; Protect Your (

jfruhlinger writes: "Hurricane Irene is bearing down on the heavily populated U.S. Northeast Corridor. If you work in IT, you know that there are few things that are worse for electronics than water; so, what's your plan? Tom Henderson has come up with a checklist, which sensibly includes backing everything up, twice; not that you have time for it now, but for future reference you might want to consider just moving your whole data center to a location that's been conveniently pre-hardened, like a water tower or a boiler room."

Comment Re:Iron Man's Suit Defies Physics -- Mostly (Score 2, Interesting) 279

Hydrogen peroxide powered rocket packs fly for around 30 seconds, because they have a specific impulse of around 125, meaning that one pound of propellant can make 125 pound-seconds of thrust, meaning that it takes about two pounds of propellant for every second you are in the air. Mass ratios are low for anything strapped to a human, so the exponential nature of the rocket equation can be safely ignored.

A pretty hot (both literally and figuratively) bipropellant rocket could manage about twice the specific impulse, and you could carry somewhat heavier tanks, but two minutes of flight on a rocket pack is probably about the upper limit with conventional propellants.

However, an actual jet pack that used atmospheric oxygen could have an Isp ten times higher, allowing theoretical flights of fifteen minutes or so. Here, it really is a matter of technical development, since jet engines have thrust to weight ratios too low to make it practical. There is movement on this technical front, but it will still take a while.

John Carmack

Comment Re:Pffft. (Score 1, Interesting) 182

While you might not care for Murdoch's brand of politics or his business style, it is difficult to argue that he has done anything but increase diversity in the media marketplace. Before he launched Fox, there were 3 networks. He created a new one, with a distinctly different politic perspective.

He's been attacked mercilessly for this Dow Jones merger, owning "2 of the 5 biggest newspapers". Except of one those is the Post, which operates at a loss. Murdoch is subsidizing an unsuccessful conservative paper to keep in it production. More diversity, not less.

Consolidation has allowed Murdoch (and presumably others) to keep open additional channels and voices, even unprofitable ones, with the money made by successful ventures. It's a good thing, not bad.
Networking (Apple)

Submission + - Duke's problems not iPhone, T'was Cisco-based ( 1

Kantara writes: Update on the iPhone and Duke's networking issues. Duke put out an update on what was going on with their network and the real culprit. From the artice:

Cisco worked closely with Duke and Apple to identify the source of this problem, which was caused by a Cisco-based network issue. Cisco has provided a fix that has been applied to Duke's network and there have been no recurrences of the problem since.


AmigaOS 4 415

Second five-eighth writes "The Amiga is alive and sort of well (you can get the OS, but not the hardware), and Ars Technica has a review of the final version of AmigaOS 4. New features include limited memory protection, 3D display drivers, an improved suite of applications (the bounty for porting Mozilla to AmigaOS has yet to be claimed), and much better 680x0 emulation. Perhaps most telling, the reviewer was able to move his daily writing workflow from Windows XP to AmigaOS 4.0: 'Not only was it possible to do this, but having done so I feel no urge to switch back. It is nice to not have any distractions when working — there is no waiting for the system to swap out when switching between major applications, no constant reminders for updates or to download new virus definitions and even if the worst happens and the system locks up, it takes only seven seconds to reboot and get back to a functional desktop.'"

Submission + - Bionic Borg Cat Eye Implant Cures Blindness

docinthemachine writes: "A series of blindness reversing operations has just been completed in cats. Apparently, some felines get a version of retinitis pigmentosa and go blind just like their human counterparts. Several have been fortunate (?) enough to play guinea pig and receive a kitty version of an experimental human retinal implant. The 2-millimeter-wide chips are surgically implanted in the back of eye. Each chip's surface is covered with 5,000 microphotodiodes that react to light, sending electric signals along the eye's optic nerve to the brain. The post finishes up with a discussion of what should we do when the artifical limbs and retinas outperform the OEM body versions we were born with. read the full article at :"

All Finagle Laws may be bypassed by learning the simple art of doing without thinking.