Hard Disk ေပ်ာက္ကြယ္လာခ်ိန္
1. Hard Disk စတင္ပံု
ယေန႕အသံုးျပဳေနတဲ့ Hard Disk မ်ား၏အေျခခံ နည္းပညာကို IBM က 1956 ခုႏွစ္မွာစတင္ေတြ႕ရွိတယ္
1960 ေလာက္ေရာက္မွစတင္အသံုးျပဳခဲ့တယ္လို႕ မွတ္တမ္းမ်ားအရသိရွိခဲ့ရတယ္..
ကြန္ပ်ဴတာစတင္ေပါေပၚက္လာခ်ိန္ကေတာ့ အိပ္တစ္လံုးေလာက္ရွိတယ္လို႕ ဆိုၾကပါတယ္..

1997ခုႏွစ္ခန္႕က ျမန္မာႏိုင္ငံမွာ Apple ကြန္ပ်ဴတာမ်ား အေျခခံပညာတြင္စတင္၀င္ေရာက္
ေနရာယူလာခဲ့ၾကပါတယ္..အဲဒီေနာက္ 386,486 DX4 စတဲ့ IBMကြန္ပ်ဴတာေတြ၀င္ေရာက္
လာခ်ိန္မွာေတာ့ ကြန္ပ်ဴတာေခတ္စတင္ဖြံ႕ၿဖိဳးခဲ့တယ္..
ကြန္ပ်ဴတာေတြ ေခတ္ ေရာက္လာၿပီးဆိုတာနဲ႕ အဲဒီအခ်ိန္က Hard Disk ေတြဟာ
အရြယ္အစားအားျဖင့္ ၈လက္မ.၁၀လက္မ.. ခန္႕ရွိၿပီး သံုးေထာင့္အျပာႀကီးေတြနဲ႕
စတင္သံုးခဲ့ရၿပီး တရုတ္ကြန္ပ်ဴတာပစၥည္းမ်ား၀င္ေရာက္လာၿပီေနာက္ပိုင္း HDD ကုိ
မေလးရွား၊အင္ဒို၊စကၤာပူ၊ထိုင္၀မ္၊ဂ်ပန္တို႕၀င္ေရာက္လာခ်ိန္မွာေတာ့ ယေန႕ေခတ္သံုး
Hard Disk ေတြကို ေကာင္းစြာအသံုးခ်ႏိုင္ခဲ့ၾကတယ္..
ပမာဏအားျဖင့္ 1G,10G, 40G,120G,500,1000(1T),1500G,20000(2T)စသျဖင့္
သိုေလွာင္မႈပမာဏ ျမင့္တက္ခဲ့တယ္...

Hard Disk ၾကိဳးဆက္သြယ္မႈအေနျဖင့္
PCI,IDE,SATA ၾကိဳးေတြအဆင့္ဆင့္ေျပာင္းလဲလာခဲ့တယ္...

2.အားနည္းခ်က္မ်ား
1T,1500G,2Tစတဲ့ Hard Diskေတြကို Defragment လုပ္တဲ့အခ်ိန္မွာ
15% ေနရာလြတ္ရွိမွသာေဆာင္ရြက္ႏိုင္ျခင္း၊အခ်ိန္ၾကာျမင့္ျခင္းေတြျဖစ္ေပၚခဲတယ္
ပစၥည္းအရည္အေသြးေကာင္းမြန္မႈမရွိတဲ့အတြက္ အသံထြက္ျခင္းေၾကာင့္ မၾကာခဏပ်က္ျခင္း
လွ်ပ္စစ္မီးအားဒဏ္ မခံႏိုင္ျခင္းစသည့္ျဖင့္...အခက္အခဲရွိေနဆဲျဖစ္တယ္..
Hard Disk အေရအတြက္အမ်ားအျပားကို ကိုင္ကြယ္အသံုးျပဳေနရသူမ်ား
၊File Server,Cloud စီမံခန္႕ခြဲသူမ်ားအေနျဖင့္
Hard Diskမၾကာခဏပ်က္သည့္အတြက္ မႏွစ္သက္ျခင္း

ဘဏ္ကဲ့သို႕အေရးႀကီးစာရင္းဇယားမ်ားကိုင္တြယ္သူမ်ားအေနျဖင့္
Hard Disk အပိုေဆာင္ထားမႈမ်ားျပဳလုပ္ျခင္း Hard Diskနည္းပညာႏွင့္ပတ္သက္သည့္
RAID နည္းပညာရပ္မ်ား ထပ္မံသံုးစြဲရျခင္း၊
Volume နည္းပညာႏွင့္ပတ္သက္ၿပီး Hard Disk တစ္လံုးကို
partition ခြဲရာတြင္ Boot, Primary , Logical ,Extended တို႕ႏွင့္ပတ္သက္ၿပီး
အသံုးျပဳရာ၌ ကန္႕သတ္မႈမ်ားရွိေနျခင္း၊
Hard Disk အလံုးအေရအတြက္ ကန္႕သတ္မႈရွိျခင္း၊

ေနာက္တခုက Game သမားေတြ ၾကိဳက္ႏွစ္သက္မႈမရွိျခင္းပါ
Game data မ်ားကို HDD ေပၚတြင္ ေရးဖတ္မႈမၾကာခဏျပဳလုပ္ရျခင္းေၾကာင့္
(ms)အခ်ိန္ၾကာေစျပီး ရုပ္ထြက္မျပတ္သားျခင္း၊ Games သြတ္လက္မႈမရွိျခင္းမ်ား
ျဖစ္ေပၚလာတယ္...

3.Operation System  နဲ႕ပတ္သက္ၿပီး 
Window မွာဆိုရင္ pagefile တည္ေဆာက္အသံုးျပဳရျခင္းေၾကာင့္
HDD ေပၚသို႕ မၾကာခဏသြားေရာက္မွတ္သားရတြင္ Hard Disk၏ ဖြဲ႕စည္းထားရွိမႈေၾကာင့္
Operation System အျမန္ႏႈန္းကို ထိခိုက္ေစခဲ့တယ္.. အလားတူ swap ဖိုင္မ်ားတည္ေဆာက္
ရာတြင္လည္ ျဖစ္ေပၚေစတယ္..မလိုအပ္ဘဲအခ်ိန္ၾကာမႈျဖစ္ေစတယ္..

4. Rating: 
Processor,Memory,Graphics,Gaming graphics,
Primary hard disk(Disk data transfer rate) တို႕ကို တြက္ခ်က္ရယူပါတယ္.
Processor,Memory,Graphics,Gaming graphics, ဘယ္ေရာက္အဆင့္ျမင့္ပစၥည္းကို
သံုးသံုး Primary hard disk ရဲ႕ Subscore ေတြေၾကာင့္ Base score ရလက္ေတြ
နည္းေနရျခင္းျဖစ္ပါတယ္...
Base score ရလဒ္ျမင့္ေအာင္ 500G, ဒါမွမဟုတ္ 1000G, 2T ေတြေျပာင္းသံုးလဲ
Base score ရလဒ္ကေတာ့ နည္းေနရပါတယ္.. ဘာေၾကာင့္လဲဆိုေတာ့
Hard Disk Cable SATA 3.0 ျဖစ္ေနလို႕ပါလား..Cable 6.0 ဆိုရင္
Disk data transfer rateေတြ ျမင့္တက္လာၿပီး Base score ေတြျမင့္တက္လာမွာလား
သို႕မဟုတ္ 7200rpm ေၾကာင့္လား၊

"Hard drive" redirects here. For other uses, see Hard drive (disambiguation).
Overview of how an HDD functions

A hard disk drive (HDD) is a data storage device used for storing and retrieving
digital information using rapidly rotating disks (platters) coated with magnetic material.
An HDD retains its data even when powered off. Data is read in a random-access manner,
 meaning individual blocks of data can be stored or retrieved in any order rather than sequentially.
 An HDD consists of one or more rigid ("hard") rapidly rotating disks (platters) with magnetic
heads arranged on a moving actuator arm to read and write data to the surfaces.

Introduced by IBM in 1956,HDDs became the dominant secondary storage device
for general-purpose computers by the early 1960s. Continuously improved,
HDDs have maintained this position into the modern era of servers and personal computers.
More than 200 companies have produced HDD units, though most current units
are manufactured by Seagate, Toshiba and Western Digital. Worldwide disk storage
revenues were US $32 billion in 2013, down 3% from 2012.

The primary characteristics of an HDD are its capacity and performance.
Capacity is specified in unit prefixes corresponding to powers of
1000: a 1-terabyte (TB) drive has a capacity of 1,000 gigabytes
(GB; where 1 gigabyte = 1 billion bytes). Typically, some of an HDD's
capacity is unavailable to the user because it is used by the file system
and the computer operating system, and possibly inbuilt redundancy for
error correction and recovery. Performance is specified by the time required
to move the heads to a track or cylinder (average access time) plus the time
it takes for the desired sector to move under the head (average latency,
which is a function of the physical rotational speed in revolutions per minute),
and finally the speed at which the data is transmitted (data rate).

The two most common form factors for modern HDDs are 3.5-inch, for
desktop computers, and 2.5-inch, primarily for laptops.
HDDs are connected to systems by standard interface cables such as
SATA (Serial ATA), USB or SAS (Serial attached SCSI) cables.

As of 2015, the primary competing technology for secondary storage is
flash memory in the form of solid-state drives (SSDs), but HDDs remain
the dominant medium for secondary storage due to advantages in price
per unit of storage and recording capacity.However,
SSDs are replacing HDDs where speed, power consumption and durability
are more important considerations.