IDE – Integrated Drive Electronics
This refers to the fact that the device has its own controller on board, as opposed to being directly controlled by the CPU. This standard has existed since the early 80s and is still true in this modern era. All hard disks (HDD), solid-state disks (SSD) and optical CD/DVD drives are IDE devices.
PATA – Parallel ATA (Advanced Technology Attachment)
This is the older version of the interface for connecting storage devices. It used a 40pin, and later a 80pin, flat ribbon cable. Each channel allows two devices to be connected, one a ‘master’ and the other a ‘slave’ device.
See: http://en.wikipedia.org/wiki/Parallel_ATA#IDE_and_ATA-1
SATA – Serial ATA
This is the newest version of the interface for connecting storage devices. It uses a flat 7 pin serial cable. Each channel is directly connected to a single device.
There have been several revisions of the SATA standard:
SATA revision 1 (SATA 1.5Gb/s) – previously known as SATA-1, SATA-I and SATA-150
SATA revision 2 (SATA 3Gb/s) – previously known as SATA-2 and SATA-II
SATA revision 3 (SATA 6Gb/s) – commonly misrefered to as SATA-3
See: http://en.wikipedia.org/wiki/Sata
AHCI – Advanced Host Controller Interface
This is a new standard defined by Intel for the operation of SATA host controllers. It is separate from the SATA standard, although it exposes SATA’s advanced capabilities (such as hot swapping and native command queuing) such that host systems can utilize them.
See: http://en.wikipedia.org/wiki/Ahci
In your BIOS, your SATA controller has selectable modes of operation. Typically these are:
IDE – In this context, it simply means to use ‘legacy’ ATA operation mode. It can also be referred to as ‘IDE emulation’, which itself is misleading, as explained earlier, all SATA drives are themselves IDE devices. For using multiple independent drives, this mode of operation can be selected. Note there is no performance ‘loss’ using this.
RAID – This sets the SATA controller to operate in RAID mode. This is where you would use multiple drives as one single storage ‘array’.
AHCI (where supported) – This sets the SATA controller to operate in AHCI mode. It provides ‘hot-swapping’ facilities, as well as Native Command Queuing will improve the performance.
SSDs and the TRIM command
The TRIM command is dependent on the SSD itself, and the operating system supporting it. It is not dependent on the host controller, and AHCI is not a requirement. TRIM is natively supported in Windows 7, as well as Linux since kernel 2.6.33.
See: http://en.wikipedia.org/wiki/TRIM
BIOS에서 SATA 컨트롤러에는 선택 가능한 작동 모드가 있습니다.
일반적으로 다음과 같습니다.
IDE-이 맥락에서 단순히 '레거시'ATA 작동 모드를 사용하는 것을 의미합니다.
또한 'IDE 에뮬레이션'이라고도 할 수 있는데,
이는 앞에서 설명한 것처럼 모든 SATA 드라이브 자체가 IDE 장치입니다.
여러 개의 독립 드라이브를 사용하는 경우이 작동 모드를 선택할 수 있습니다.
이것을 사용하면 성능 '손실'이 없습니다.
RAID-RAID 모드에서 작동하도록 SATA 컨트롤러를 설정합니다.
여기에서 여러 드라이브를 하나의 단일 스토리지 '어레이'로 사용할 수 있습니다.
AHCI (지원되는 경우)-SATA 컨트롤러가 AHCI 모드에서 작동하도록 설정합니다.
'핫스왑'기능을 제공하고 Native Command Queuing은 성능을 향상시킵니다.
IDE 모드 : SATA 이전의 P-ATA(패러렐 케이블을 쓰는) 방식의 HDD와 호환성이 있는 것
AHCI모드 : 최근 사용하는 SATA방식 : 최적화 속도 지원, hot plug 지원.
RAID모드 : SATA방식의 HDD를 여러개 묶어서 더 큰용량으로 사용할수 있도록 해주는 모드.
보통 AHCI를 사용.