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Why do I prefer hard drive sizes that are power of 2?
Posted by: gadje
Date: August 12, 2017 06:08PM
I realized I never bought a hard drive that was an "odd" size, 3 or 6 TB. All my drives are 1, 2, 4 and 8 TB. You could probably give me a 3 TB drive for free and I won't use it. What is wrong with me?
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: jdc
Date: August 12, 2017 06:45PM
OCD? bunny smiley



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Edited 999 time(s). Last edit at 12:08PM by jdc.
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: wurm
Date: August 12, 2017 07:03PM
Um...1 is an odd number. And 6 is even. Just sayin'. smiling smiley
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: Racer X
Date: August 12, 2017 07:17PM
spewing facts here just pisses people off. Especially if verifiable, and on the "Other Side"
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: ka jowct
Date: August 12, 2017 08:27PM
I have mostly 4 and 6TB drives, except for older systems and laptops. Maybe the batch of bad 3 TB drives a couple years ago has made gadje avoid them?



Edited 1 time(s). Last edit at 08/12/2017 08:28PM by ka jowct.
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: GGD
Date: August 12, 2017 08:44PM
I think one way of looking at this is the thought process when considering upgrading / replacing your drives. I think it's more likely you'll want to wait until you can double the capacity instead of just increasing it by 50%. So, 1, 2, 4, 8. Unless you started at 750GB, and decided to go 1.5, 3, 6 GB.
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: AllGold
Date: August 12, 2017 08:48PM
There might be something psychological to it (don't want your drive to be "odd").

Or it might just be the timing of the technology along with price-to-size. 2TB is double the capacity of 1TB (duh). If you already had a 2TB drive, why would you buy a 3TB drive? The tendency would be to think "I might as well wait for 4TB and double my capacity." And except for a short period after introduction, the larger size is more economical on a per-TB basis.

Edit: GGD beat me to essentially the same thought while I was typing.







Edited 1 time(s). Last edit at 08/12/2017 08:51PM by AllGold.
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: billb
Date: August 12, 2017 08:55PM
even numbers are more comfortably divisible
they are trustworthy
great attributes for storage of ones and zeroes



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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: Fritz
Date: August 12, 2017 09:33PM
BestBuy has a couple WD 8TB for <$200 this week.
I have just about filled a 1.5TB with movies I toss after we watch.
8TB? That would easily fit all my CDs and LPs in ALE and still have 4TB or more left.



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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: Filliam H. Muffman
Date: August 12, 2017 11:04PM
So what happens when you get a 8 TB drive home and it formats to 7.53 TB?



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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: Racer X
Date: August 12, 2017 11:59PM
old fogey smiley
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: Buzz
Date: August 13, 2017 02:50AM
Quote
GGD
I think one way of looking at this is the thought process when considering upgrading / replacing your drives. I think it's more likely you'll want to wait until you can double the capacity instead of just increasing it by 50%. So, 1, 2, 4, 8. Unless you started at 750GB, and decided to go 1.5, 3, 6 GB.

Remember, PATA topped out at 750GB...
==
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: S. Pupp
Date: August 13, 2017 08:37PM
Quote
wurm
Um...1 is an odd number. And 6 is even. Just sayin'. smiling smiley
gadje did not state a preference for even numbers, but rather numbers to the power of 2
2 to the power of 0 = 1
2 to the power of 1 = 2
2 to the power of 2 = 4
2 to the power of 3 = 8

I prefer drives that are not a power of 2. My favorite and most reliable drives are 3TB HGST. Even subjected to 70 degrees C conditions after failure of a case fan, one has been in daily use in my HTPC for about 5 years. I've had about 90% failure of 1TB Seagates, 50% failure of WD 1TB, and 50% failure of 2TB HGST (all but one of these were 0F10311 model).
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Re: Why do I prefer hard drive sizes that are power of 2?
Posted by: NewtonMP2100
Date: August 14, 2017 06:44AM
....'Charmed'......P3 [ the Powers of 3 ].....



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