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| Newer page: | version 19 | Last edited on Sunday, May 1, 2005 1:42:52 pm | by JasonDrake | |
| Older page: | version 18 | Last edited on Thursday, March 17, 2005 10:30:41 am | by JohnMcPherson | Revert |
@@ -1,9 +1,9 @@
The piece of [Hardware] that stores your programs and data "permanently" - ie after the power goes off. You probably know what a hard disk is.
Hard drives used to have capacity measured in MegaByte~s -- these days it's in GigaByte~s (but also see the MebiByte and GibiByte pages).
-A typical cheap [IDE] hard disk drive these days might cost around NZ$200
for 40-60 GibiByte
~s of data. [SCSI] drives are typically slightly more expensive.
+A typical cheap [IDE] hard disk drive these days might cost around NZ$120
for 40-80 GigaByte
~s of data (about $1/Gb for larger drives)
. [SCSI] drives are typically slightly more expensive.
The standard method of measuring large amounts of data (in the mainstream media) appears to be ''[LibraryOfCongress|LOC]'' x ''n''.
To appreciate how far storage technology has come, look at the size of [a 4 megabyte disk platter | http://www.wlug.org.nz/archive/images/platter-lowres.jpg?] used at StanfordUniversity in the 1960s; there a $1 note in the lower-right corner to give you an idea of the platter's size. The black mark around it is from a disk head crash (!!).
