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Terabyte Hard Drive Put To the Test
EconolineCrush writes "As a technical milestone, Hitachi's Deskstar 7K1000 hard drive is undeniably impressive. The drive is the first to pack a trillion bytes into a standard 3.5" form factor, and while some may argue the merits of tebi versus tera, that's still an astounding accomplishment. Hitachi also outfitted the drive with 32MB of cache—double what you get with standard desktop drives—making this latest Deskstar a leader in both cache size and total capacity. That looks like a great formula for success on paper, but how does it pan out in the real world? The Tech Report has tested the 7K1000's performance, noise levels, and power consumption against 18 other drives to find out, with surprising results."
This marketing BS always pisses me off. For years and years and years we've used 1024 in the computer world, since it's a power of 2, and computers deal with powers of 2. A 931GB drive is NOT a 1TB drive. And we don't need new stupid labels like tebi, we just need storage manufacturers to stop being retards.
RAID 1+0 is the way to go for redundancy. Unless you're unlucky enough to lose both drives in one of the pairs making up the array, you can survive more than one drive failing.
It's also the way to go for speed - your controller doesn't have to calculate the parity bits for every write operation (yes I know the parity sum is simple - that doesn't stop it from adding a bottleneck).
RAID5 is most useful where:
1. You desperately need the space.
AND
2. You can't afford the drives (or, for that matter, power/larger RAID controller) required to acheive the same space in RAID 1+0.
I'm not that convinced by the testing methods here. The boot and load times page shows 20 seconds difference between the slowest and fastest drives which they barely comment on, and yet the drive with the slowest boot time is among the quickest when loading Far Cry and Doom 3? Something is not right there.
And if they're really timing level loads with a stopwatch, why on earth are they quoting 2 decimal places (and besides, the variability in reaction time is accounting for most of the supposed differences in any case). Half of their tests don't appear to tell anybody anything significant, and the most worthwhile page in there is the conclusion. Pretty graphics though.
Look, I hate marketing dishonesty as much as the next guy, but borrowing the SI prefixes honestly does nothing but add confusion. Hard drives are easy, because one can safely assume that the marketing 'tards went with whatever number was bigger. But what about my phone's data plan? Aside from the whole kB vs kb thing, how do I know which definition of "kilo" my provider has gone with? Do they consider themselves with the "computer industry" or with the rest of the world? And (this is the best question), will the not-very-well-paid support grunt even know the difference?
Would you like it if you agreed to sell a dozen POS systems to a bakery, only to be told after the contract, "Sorry sir. This is the baking industry. You agreed to give us thirteen systems." Or if you got a $30 bill from your ISP with the explanation, "This is the computer industry. Though our adverts say this plan is $30 a month, that's hex. In base-ten dollars, you owe us $48."
You hate marketing people skewing reality. Good. It is only through fighting ambiguity that they can be stopped from getting away with this.
Do you know the difference between a pipe and a tube? If you get into any business involving either, I hope you don't repurpose the words everyone else has settled upon.
It's that extra bit of humility that really makes your post shine."Live as if you'll die tomorrow." Ridiculous. You could die later today.
But instead of going with whatever number that fits their specific field, they all went with 1000. Really, that IT people refuse to do the same makes us look utterly retarded.
Not that it matters anyway. With 8 bits on the byte, we're doomed before we even start. There is no hope in sight until we just ditch this shit, get a clue from the network people, and start counting bits in multiples of 1000.
I lost my sig.
No. I don't think you are. Or you are, but for a different reason.
Even the NSA very very probably can not recover any useful information from a disk overwritten the way I wrote. They have lots of money and expertise, but the laws of physics apply to them too.
But they could get at the information on your computer by other means that you'd be unlikely to detect, if they really wanted to. For example, if the information is from the net and you don't encrypt everything, they could easily wiretap your broadband. Getting a hardware-keylogger into your keyboard would be possible too, aswell as dozens of other tricks.