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2. Density (computer storage) - Wikipedia

   en.wikipedia.org/wiki/Density_(computer_storage)

   For example, the first commercial hard drive, IBM's RAMAC in 1957, supplied 3.75 MB for $34,500, or $9,200 per megabyte. In 1989, a 40 MB hard drive cost $1200, or $30/MB. And in 2018, 4 Tb drives sold for $75, or 1.9¢/GB, an improvement of 1.5 million since 1989 and 520 million since the RAMAC.

3. Computer data storage - Wikipedia

   en.wikipedia.org/wiki/Computer_data_storage

   Storage devices that reduce fan usage automatically shut-down during inactivity, and low power hard drives can reduce energy consumption by 90 percent. [10] [11] 2.5-inch hard disk drives often consume less power than larger ones. [12] [13] Low capacity solid-state drives have no moving parts and consume less power than hard disks.

4. Orders of magnitude (data) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(data)

   36,028,797,018,963,968 bits (4 pebibytes) – theoretical maximum of addressable physical memory in the AMD64 architecture [citation needed] 4.5 × 10 16 bits (5.625 petabytes) – estimated hard drive space in Google's server farm as of 2004 [citation needed] 2 56: 72,057,594,037,927,936 bits (8 pebibytes)

5. Disk sector - Wikipedia

   en.wikipedia.org/wiki/Disk_sector

   For most disks, each sector stores a fixed amount of user-accessible data, traditionally 512 bytes for hard disk drives (HDDs), and 2048 bytes for CD-ROMs, DVD-ROMs and BD-ROMs. [1] Newer HDDs and SSDs use 4096 byte (4 KiB) sectors, which are known as the Advanced Format (AF). The sector is the minimum storage unit of a hard drive. [2]

6. What does "free up disk space" mean — and how do you fix it?

   www.aol.com/lifestyle/does-free-disk-space-mean...

   Only when you empty the trash will your hard drive reflect the true storage space remaining on your computer. Try System Mechanic for 30 days free* Show comments

7. File size - Wikipedia

   en.wikipedia.org/wiki/File_size

   File size is a measure of how much data a computer file contains or how much storage space it is allocated. Typically, file size is expressed in units based on byte. A large value is often expressed with a metric prefix (as in megabyte and gigabyte) or a binary prefix (as in mebibyte and gibibyte). [1]

8. 14 Best Free Cloud Storage Options - AOL

   www.aol.com/14-best-free-cloud-storage-234545340...

   Cloud storage offers a convenient way to back up important files and photos, and even to maximize your hard drive space to store files you really need, rather than those you only access once in a...

9. Standard RAID levels - Wikipedia

   en.wikipedia.org/wiki/Standard_RAID_levels

   For example, if three drives are arranged in RAID 3, this gives an array space efficiency of 1 − 1/n = 1 − 1/3 = 2/3 ≈ 67%; thus, if each drive in this example has a capacity of 250 GB, then the array has a total capacity of 750 GB but the capacity that is usable for data storage is only 500 GB.