Hard Disk Drives
A hard disk drive,
commonly referred to as a hard drive , hard disk or fixed disk drive, is a
non-volatile storage device which stores digitally encoded data on rapidly
rotating platters with magnetic surfaces. Strictly speaking, “drive” refers to
a device distinct from its medium, such as a tape drive and its tape, or a
floppy disk drive and its floppy disk. Early HDDs had removable media; however
an HDD today is typically a sealed unit with fixed media.
Strictly speaking, an
HDD is a rigid-disk drive, although it is probably never referred to as such.
By way of comparison, a so-called “floppy” drive has a disc that is flexible.
Originally, the term “hard” was temporary slang, substituting “hard” for
“rigid”, before these drives had an established and universally-agreed-upon
name. some time ago, IBM’s internal company term for an HDD was file.
Introduction
The explosion of flash
memory technology has dramatically increased storage capacity and decreased the
cost of non-volatile semiconductor memory. The technology has fueled the
proliferation of USB flash drives and is now poised to replace magnetic hard
disks in some applications. A solid state drive (SSD) is a non-volatile memory
system that emulates a magnetic hard disk drive (HDD). SSDs do not contain any
moving parts, however, and depend on flash memory chips to store data. With
proper design, an SSD is able to provide high data transfer rates, low access
time, improved tolerance to shock and vibration, and reduced power consumption.
For some applications, the improved performance and durability outweigh the higher
cost of an SSD relative to an HDD.
Intel Corporation
introduces its highly anticipated third-generation solid-state drive (SSD) the
Intel Solid-State Drive 320 Series. Based on its industry-leading 25-nanometer
(nm) NAND flash memory, the Intel SSD 320 replaces and builds on its
high-performing Intel X25-M SATA SSD. Delivering more performance and uniquely
architected reliability features, the new Intel SSD 320 offers new higher
capacity models, while taking advantage of cost benefits from its 25nm process
with an up to 30 percent price reduction over its current generation.
Nand -Flash Memory
Array Architecture
NAND flash memory chips
arrange the memory cells in a logical “not-and” (NAND) configuration. This
arrangement strings together all of the cells for a common input / output (I/O)
bit across all memory pages.
Single And Multiple
Level Cells
The control gate
voltage necessary to form the N-channel is controlled by the charge on the
floating gate. The required voltage is called the gate threshold voltage and is
labeled Vth. With SLC flash memory, there is only one programmed state in
addition to the erased state. The total of two states allows a single data bit
to be stored in the memory cell.
Intel Third-Generation
Ssd 320 Series
For the better
performance of Intel Third-Generation SSD 320 Series , the intel introduces a
new processor called as Intel 3D
Tri-gate Transistor for 22nm Processors . Enter Intel’s new 22nm Tri-Gate
transistors which can be packed onto smaller chips than current 2D 32nm
transistors while consuming less than half the power. The new transistors will
also enable exciting advances in portable electronics, as they are 37 percent
more powerful when operating at low voltages. Intel already has plans to
produce and ship a new breed of Ivy Bridge processors that utilize the Tri-Gate
transistors by 2012, extending Moore’s law well into the future.
Conclusion
As the Solid State
Drives is a new innovative technology which will provide high data
transference, high data security & enhanced reliability. And the most
speculious highlighting feature is, the power consumption which can be
contributed by the Intel third generation Solid State Drives with the help of
the Intel 3-D Tri-Gate processors.