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Comment: Re:4 years? (Score 1) 167

They only had availability data for 4 years of drive life. This is largely a math study. I'm not familiar with any implementations of their 2D parity system, although it is outside of my area of expertise. Their assumption that the service calls would always be more expensive seemed a little suspect to me. Rack space isn't free and when you have basically 100% redundancy or more in spare drives you're going to eat up a lot of space. Putting 54 spare drives in a rack that already has 11 parity disks and only 55 primary disks just doesn't seem efficient. Is all of that space really cheaper than a single service call during the life of the machine to replace 20 failed drives all at once (when the rack drops below say 6 spares of the original 26--saving you half of the space the spares would have taken up).

I have also seen enough buggy RAID controllers in my day to make me very wary of that 2D raid arrangement in the paper.

All in all this smells like a mathematicians solution to the problem, largely unbounded by real life concerns.

Comment: I would love to, but that server is a soup Nazi (Score 4, Informative) 167

So I tried to view the PDF, and it says "can't use the plugin, it causes problems on our server". So I figured I'd just download the file with wget instead. Nope, 403 forbidden.

Looks like fetch works though. If anybody else has trouble getting the file, try my local mirror.

Comment: Re:Maybe if Adobe fixed their broken updater... (Score 5, Interesting) 185

by jandrese (#48928041) Attached to: Adobe's Latest Zero-Day Exploit Repurposed, Targeting Adult Websites
My favorite part is where the updater tells you that a new update is ready, but it won't install it automatically because Adobe needs another ad impression or something and you have to download and install it yourself. This is why I don't have Flash or Java installed anymore. I especially like when they try to sideload some crapware toolbar with their security update too. I can kind of understand this sort of behavior from a sketchy freeware app being hosted by J. Random Guy, but Oracle and Adobe are multimillion dollar corporations. Do they really care so little about their brand?

Comment: Re:Terrible names (Score 1) 375

by jandrese (#48907909) Attached to: Windows 10: Charms Bar Removed, No Start Screen For Desktops
At least the old Unix names were at least somewhat relevant to their purpose, even if severely shortened to save keystrokes:

grep: Global Regular Expression Print -- Ok, still pretty bizarre sounding if you're not a bearded unixguy
man: Short for MANual. Straightforward.
awk: Beats me. I think it's named after the author's initials or something
sed: Stream EDitor: does what it says, edits streams of characters

Comment: Re:My experience with Fios was largely negative (Score 1) 200

by David_W (#48894959) Attached to: Verizon About To End Construction of Its Fiber Network
You are half right. The "normal" channel-based content comes in on its own wavelength, yes. However "on-demand" and other interactive content comes in on IP (using MoCA provided by the router), and as I understand it that IP channel comes from the same bandwidth pool as whatever your Ethernet and wireless connections are using too.

Comment: Re:Why lay fiber at all when you can gouge wireles (Score 1) 200

by jandrese (#48889143) Attached to: Verizon About To End Construction of Its Fiber Network
FiOS is expensive, but then so is cable and at least you get what you pay for with FiOS. If Google fiber or Muni Fiber came to my area I would almost certainly switch, but as it is I feel lucky to at least get good service if I'm going to be paying out the ass.

Comment: Re:Why lay fiber at all when you can gouge wireles (Score 4, Insightful) 200

by jandrese (#48888423) Attached to: Verizon About To End Construction of Its Fiber Network
That is in fact exactly what the article says. While the profit margin on FiOS is apparently 4.4%, the wireless side had a 23.5% profit margin. While those numbers are heavily encrusted with bullshit, they do show the relative value of the technologies to Verizon.

Nothing succeeds like the appearance of success. -- Christopher Lascl