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Raid - Level
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RAID


ǻͿ ޵ ũ ̴ Ը ý۰ ӵ ̱ ؼ ߵǾ. ʰ ̺ Ʈѷ ʱ ũ ̴ \ ̺ Ȯؼ Ͱ ̺ հӵ ֵ ߴ. ʱ ̵ ý ȿ̱ 뼺 . ұԸ ý ޵ʿ ַǿ 䱸 ܳ.

RAID

ũ Ʈ (Redundant Array of Inexpensive Disks). RAID ϴ ý δ 1987⿡ Ŭ ߴ.
RAID ߽ ̺긦 սŴν ũ ɰϴ ̲ ̴. RAID ýۿ ̺갡 ʿϹǷ 1 忡 ս ϴ ī ʿϰ ȴ.  ī Redundant μ Ÿ ִ.

RAID ý ÿ Ű Ǿ ŷڼ 䱸 ִ

ó RAID Ư ½ũ 맟缭 ȭ Ƿη ڸƮϰ Ǵ ũ ̺ μ Ǹŵǰ ִ. RAID ̶ Ѵٸ ִ.

ۼӵ
1ʴ I/OƮ
¶ ġ 뷮
뼺 ý ŷڼ
뷮 ̼
۾ ٿ Ÿ


RAID ũ
RAID ϰԵ ϳ ýۿ I/O Ϸ Ϲ οǴ ̷п ũ I/O۵ 10% ð Һϴ ø̼ CPU 10谡Ǵ ý ó 5ۿ ʴ 찡 Ÿ ִ. CPU ʿ CPU ɰ ý ̴ Ȯ Ϸο ϴ I/Oó ø̼ǵ μ ϰ ȿ Ȱ

RAID I/O ϰ ýۿ ߱  ȲϿ RAID ø ְ δ ϽŰ 쵵 ִ ýۿ ΰ پ 䱸 ٸ RAID Ǹ Ư ִ.


RAID

RAID 0 - Ʈ`
RAID 1 - ̷
RAID 2 - Ʈΰ
RAID 3 - иƼ Ʈ
RAID 4 - иƼ Ʈ
RAID 5 - иƼ Ʈ
RAID 0+1 - Ʈΰ ̷



RAID̰ I/O ؼν ? 쿡 󼭴 RAID Ȳ ݴ ġ 쵵 ִ. ġ ýۿ ΰǴ پ 䱸 ϱ ؼ RAID ǵǰ Ư ߰ ִ.

Ŭ 5 RAID Ǿִ. 5 ܼ ؼ ߰Ǿ ִ.


RAID 0 - Ʈ

Ʈ̶ Ʈ Ȱ ũ ü ؼ װ ü(Ʈ)μ ũ ġϴ Ÿ ̴. ü ̳ ӵ ̺꿡 ؼ ϵȴ. ̺꿡 ۵Ǿ ̺꿡 ϴ ӵ ü 'Ʈ' Ѵ.  Ʈ  Ʈѷ ȣƮ 󿡼 (Ȥ սŲ ·)۵ϰų Ʈ ý۰ ø̼ǿ ؼ ̸ ũ Ȥ ũó ̰ ϴ Ѵ..

Ϲ Ʈ ϴ ũ ä ִ ִ RAID 0 ý ۼӵ ̺ ۼӵ հ ٻ ִ(, ȣƮ Ʈ ϴ ϵ ׿ ۼӵ ó ־ Ѵٴ ȴ).
RAID 0 پ IOPS Ѵ. ̰ Ͱ ɵ ͷ лǾ I/O յȭ ϱ ̴. RAID 0 ۼӵ IOPSɿ ؼ ȭ ϱ ؼ ڵ Ʈ ü ũ Ʈ 迡 ؼ ʿ䰡 ִ.



RAID 1 - ̷

Ÿ ̴ Ʈ 緯Ʈ ø̼ Ǵ ̷̶ Ѵ. RAID 1 ӵٵ 뼺 ȭϱ ؼ ԵǾ Ʈ ̻ ̷ ũ Ѵ.

̷ ý ǵ IOPS ϱ ؼ ִ. ϰ ̺긦 ؼ 䱸 ó Һ ֱ ̴. ۷̼ǿ ̺긦 Ű ȵǹǷ ̺꺸ٵ ణ ϴ 찡 ִ.


RAID 5 - Ʈΰ иƼ

RAID 5 Ʈ ɻ 츮鼭 Ϳ (иƼ) ߰ν սǿ δ.

RAID 5 Ʈε Ͱ ϴ ׷쳻 ̺꿡 ؼ \ ִ. Ͱ I/O䱸 ̻ ũ μ ̺ ׷쳻 лؼ ġǾ ִٸ ̺ ȣ · 䱸 ִ. 쿡 󼭴 ̺긦 Բ۵ų Ƿ RAID 5 ýۺ پ ְ ȴ.

RAID 5 иƼ ȯ ̳ ͸ (ȣġ) ȴ. ũ 峵 ܼ ˰ ͸ ũ Ѵ. RAID 5 ̷ ڸ ʴ ä پ ϴ ڵ鿡 ־ ŷ ̴.

RAID 5 ڴٴ ̴. 1ϸ ɾ RAID 5 ؼ Ǹ ý 4 I/O۷̼ǰ 2 иƼ ǵ// μ Ϸ ȴ. ϵȴ.

RAID 0+1 - Ʈ + ̷
2 RAID սŴμ ȿ  ִ
˷ ִ ϳ RAID 0+1 ִ ̰ ̷(RAID 1) ŷڼ Ʈ (RAID 0) ɰ սŲ ̴.
Ʈΰ ̷ ý ŷڼ ̷ ؼ Ʈ ſ پ. RAID 0+1 ý ܵ ũ ظ ߵ Դٰ RAID 5 ʹ ޸ ȭ ʷ ʰ . ó ִ. ׷ ȣ ʿ ϴ ʹ ܼ ɵ 2 ũ ν RAID 0+1 ý ̷ ý۰ Ȱ ʿϰ Ǹ RAID 5 ȴ.

[] - SKSUN

 
 

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