Print 20 comment(s) - last by coldpower27.. on Jul 13 at 7:48 AM

Hitachi Deskstar 7K1000.B  (Source: Hitachi)
Second generation 1TB drive uses 43% less power than the original

Hitachi was first out of the gates with a 1TB HDD and the other major hard drive makers -- Seagate and Samsung -- had to play catch up. Hitachi announced its second generating 1TB HDD this week that promises to be the most energy efficient 1TB 7,200 RPM hard drive in the world.

The drive is known as the Deskstar 7K1000.B and the main feature is the use of three platters that each store 374GB of data. With the drive only needing three platters, the idle power consumption of the drive is reduced up to 43% over Hitachi’s first generation 1TB HDD. The 7K1000.B also offers users the option of bulk data encryption (BDE) for the entire contents of the drive.

The 7K1000.B makes use of perpendicular magnetic recording and the drive’s BDE option uses AES encryption certified by the National Institute of Standards and Technology to deliver the strongest commercially available levels of security for data.

Power requirement for the 7K1000.B is 5.2W at idle and the drive uses a 16MB cache. The drive has a maximum media transfer rate of 1388 Mbits/s.  The Hitachi 7K1000.B will ship worldwide in July at an undisclosed price.

For enterprise users needing a high mean time between failure (MTBF), a DeskstarE7K1000 drive is also being introduced that has up to a 32MB buffer and a 1.2 million hour MTBF featuring the same low power requirements and optional encryption technology.

The first generation Hitachi 1TB HDD was released in January 2007.

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RE: looks good on paper
By DeepBlue1975 on 7/10/2008 1:29:29 PM , Rating: 2
Yep, he got confused there, but he has a point about the overhead and the figures he posted are coherent with that...
Though we're talking about some 50%+ difference in the example of the 1st gen drive, so there is something more than overhead involved, and that's the reason I said I suspected some sort of burst speed, which is also in line - to some degree - with results from tests.

RE: looks good on paper
By sprockkets on 7/10/2008 2:06:36 PM , Rating: 2
8 bits = 1 byte

Not hard to convert.

173.5 MB is correct.

NOW, if you want it in Windows terms/Binary, then the 173.5MB = 165.46 MiB. Just as 4700MB = 4482.3 MiB for a DVD.

But what OS uses the right term anyhow? Measure everything in bytes and you can't go wrong :)

RE: looks good on paper
By Oregonian2 on 7/10/2008 2:30:31 PM , Rating: 2
But what OS uses the right term anyhow? Measure everything in bytes and you can't go wrong :)

I agree with your conclusion, but I think it's the OS's that use the correct measurement (binary interpretation of "Mega") seeing as how it's a binary computer. It'd be funny saying that a Megabyte image in memory can't be written out to a Megabyte of disk space because it doesn't fit (and memory is binarily addressed so they're definitely in the binary-Mega camp). :-)

RE: looks good on paper
By DeepBlue1975 on 7/10/2008 3:44:03 PM , Rating: 2
You got me confused there:

Aren't mibs the smaller units, meaning millions of breasts?
I always thought Megabyte and Megabit are the correct binary units, and so converting megabits to megabytes only requires dividing by 8bits/byte.

If the article said something like 1388000000 bits, to turn it to bytes you'd divide by 8, and to convert that same bit number to megabytes you'd have to divide 8.388.608 which is, well, 8 times 1.048.576, which is a mega-something in binary.

I just hate when companies use decimal prefixes in computer devices. That's another reason I'm longing to get an SSD, they are as binarily measured as any decently specd out computer component.

Say no to measurement unit mixing up! (?)

RE: looks good on paper
By TomZ on 7/10/2008 7:26:57 PM , Rating: 2
Aren't mibs the smaller units, meaning millions of breasts ?

Interesting slip-up there! LOL!

RE: looks good on paper
By RamarC on 7/10/2008 3:20:52 PM , Rating: 2
y'all know i meant divide by 8 to get bytes. ;)

RE: looks good on paper
By mikeyD95125 on 7/10/2008 10:36:30 PM , Rating: 2
Did they drop the cache from 32MB to 16MB?

"It seems as though my state-funded math degree has failed me. Let the lashings commence." -- DailyTech Editor-in-Chief Kristopher Kubicki
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