02-22-2024, 04:15 PM
gabester wrote:
[quote=Tiangou]
It's a petaBIT.
Oh that explains some of it...
But 200 cm is still 2 m... so where's the size reduction this media format is supposed to bring?
"An array of HHD drives that could fit a petabit of data would be about 200 centimeters high. An equivalent array of Blu-Ray storage would be over 2 meters high..."
125,000GB = 125TB
Not sure how they're calculating the height of a drive. I'm not seeing the same numbers when I try to do the math...
Largest hybrid drive available to consumers is 8TB in a 3.5-inch form-factor. Not sure what the height is, but guesstimating about 42mm... 125/8 = 16 hard drives, which stacked up would come to about 672mm. (~67cm.) ... But 4TB HHD drives are more common. 125/4 = 32 drives * 42mm = 1344mm or ~134cm. Not 200cm. :dunno:
An ordinary Blu-ray holds 25GB. 125,000/25 = 5,000 BD. At 1.2mm high, a stack of 5,000 discs would be 6,000mm. That's a stack 6 meters tall. Some Blu-rays can hold 50GB or 100GB... at 50GB, the stack would be 3,000mm tall, or 3 meters. At 100GB, it would be 1500mm or 1.5 meters... So, I guess they're using 50GB as the standard. 3 meters high is "more than 2 meters high."