![]() ![]() This is the space that is accounted for with DF. DISK USAGE is also the space that you see when you dont give any special options to LS or DU (so when you dont give -s for LS or –apparent-size for DU). ![]() * DISK USAGE size (left size value in “ls -lsk”), is how much disk space the file takes up (so if you have filesystem compression or deduplication, this size would be smaller). ![]() * APPARENT size (middle value in “ls -lsk”), is how the size appears to applications. ls -l gives APPARENT SIZE (in the middle of the output) and ls -s shows DISK USAGE size (on the left side of the output) LS and DU can both display APPARENT SIZE and DISK USAGE/NORMAL size. DU displays the DISK USAGE size without any arguments, to display APPARENT SIZE you have to give the du –apparent-size argument (command examples below). ![]() When they tell you your getting a 3 TB drives, your really getting 3000,000,000,000 bytes and not 3298534883328 bytes (Why? it saves them money to sell smaller drives) Noone really uses the translation of Kilobytes meaning 1000 bytes, even though its the accurate one, well noone except drive manufacturers. NOTE ABOUT UNITS BELOW: I incorrectly state they are called Kilobytes, but in reality they are kibibytes. ![]()
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