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December 30, 2010

ssd ¼º´É ÀúÇÏ ÇØ°á

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°ú¿¬ ¹¹°¡ ¹®Á¦Àϱî?
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ssd Ç÷¡½Ã¿¡ ´ÜÆíÈ­°¡ ÁøÇàµÇ¾î ssd¼º´ÉÀÌ ÀúÇÏµÈ °ÍÀΰ¡?

³»°¡ »ê ssdÀÎ i-ssd´Â ºñ·Ï MLCÀ̱â´Â Çϳª
¿¥Æ®·Ðº¸´Ù ´õ ³´´Ù°í ÇÏ´Â ÄÜÆ®·Ñ·¯°¡ žÀçµÇ¾îÀÖ°í
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±×¸¸Å­ °¡°Ýµµ ´Ù¸¥ ssd¿¡ ºñÇØ Á¶±Ý ´õ ³ª°¡´Â ³à¼®À̰í..

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ssd¶ó´Â ³ðÀÌ ¿ø·¡ ¾²´Ùº¸¸é ´ÜÆíÈ­µµ µÇ¸é¼­ ¼º´ÉÀÌ Á¶±Ý¾¿ ÀúÇÏµÇ°Ô ¸¶·ÃÀ̱ä Çѵ¥
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±×·±µ¥ 90M/s -> 3M/s ¶ó´Ï.. ÀÌ°Ç ¸»ÀÌ ¾ÈµÇ´Â ¼öÄ¡ÀÌÁö ¾ÊÀº°¡..

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¸®ºê¸¶Æ® '±×·±°Ç ¾ø±¸¿ä °¡Á®¿À½Ã¸é ¾Æ¸¶ »õÁ¦Ç°À¸·Î ±³È¯ÀÌ µÉ °Í °°½À´Ï´Ù'
ÇÊÀÚ '³×...'




¸ðµç°ÍÀ» Æ÷±âÇϰí.. as¹ÞÀ¸·¯ ¸®ºê¸¶Æ®¸¦ ¾ðÁ¦ °¡º¼±î »ý°¢Çϸç, À̰ÍÀú°Í ÄÄÇ»ÅÍÀÇ »óŸ¦ È®ÀÎÇϰí ÀÖ´ø µµÁß
ÀåÄ¡°ü¸®ÀÚÀÇ IDEÅÇ¿¡¼­ ÀÌ»óÇÑ °ÍÀ» ¹ß°ßÇß´Ù.

---------------------------------------
Àü¼Û¸ðµå : Ultra DMA(°¡´ÉÇѰæ¿ì)
ÇöÀç Àü¼Û ¸ðµå : PIO
---------------------------------------

PIO? PIO?
Ultra DMA·Î Àü¼ÛÀÌ µÇ´Â°Ô Á¤»ó ¾Æ´Ñ°¡? PIO? ¹¹Áö À̳༮Àº?

¹Ù·Î ±¸±Û½Å¿¡°Ô ÁúÀÇÇѰá°ú
¾Æ·¡¿Í °°Àº ¹®°ÇÀ» ã¾Ò´Ù.


IDE Àü¼Û ¸ðµå°¡ DMA¿¡¼­ PIO·Î ¹Ù²ð ¶§

ÀÌÀ¯:
After the Windows IDE/ATAPI Port driver (Atapi.sys) receives a cumulative total of six time-out or cyclical redundancy check (CRC) errors, the driver reduces the communications speed (the transfer mode) from the highest Direct Memory Access (DMA) mode to lower DMA modes in steps. If the driver continues to receive time-out or CRC errors, the driver eventually reduces the transfer mode to the slowest mode (PIO mode).

ÇØ°á¹æ¹ý:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\0001
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\0002

À§ÀÇ Ç׸ñ¿¡
DWORD°ª 'ResetErrorCountersOnSuccess' Ãß°¡ -> value ´Â '1'

´ëÃæ ÇØ¼®ÇÏÀÚ¸é,
xp°¡ 6¹øÀÌ»óÀÇ ÁÖ±âÀûÀÎ CRC¿¡·¯¸¦ ¹Þ°ÔµÇ¸é, ¾ÈÁ¤¼º Â÷¿ø¿¡¼­ °­Á¦·Î DMA->PIO·Î ¸ðµå¸¦ º¯°æ½ÃÄѹö¸°´Ù´Â °ÍÀÌ´Ù.
±×¸®°í À̸¦ ¹æÁöÇϱâÀ§ÇØ ·¹Áö½ºÅ͸®¿¡ °ªÀ» ¼¼ÆÃÇÏ´Â ¹ýÀÌ ³ª¿ÍÀÖ°í..

±×·¸´Ù¸é PIO¸ðµå·Î º¯°æµÇ´Â°É ¹æÁöÇÏ´Â °ÍÀº Àִµ¥
ÀÌ¹Ì º¯°æµÈPIO¸ðµå¸¦ ´Ù½Ã Ultra DMA·Î ¹Ù²Ù´Â ¹æ¹ýÀº?

¿ª½Ã ±¸±Û½Å °Ë»öÇÏ´Ï

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318} ¿¡¼­

¼­ºêŰ·Î 0000, 0001, 0002 µîÀÌ ³ªÅ¸³­´Ù. °¢°¢À» Ŭ¸¯ÇÏ¸é ¿À¸¥ÂÊ DriverDesc¿¡ ÁÖ IDE ä³Î ¶Ç´Â º¸Á¶ IDE ä³ÎÀÌ Ç¥½ÃµÇ¹Ç·Î ÇÊ¿äÇÑ IDE ä³ÎÀ» ¼±ÅÃÇÑ´Ù.

¿À´Ã ÂÊÀÇ °ª Áß¿¡¼­ MasterIdDataChecksum ¶Ç´Â SlaveIdDataChecksum °ªÀ» »èÁ¦

±×¸®°í ¸®ºÎÆÃ ÇÏ¸é ºÎÆÃÇÒ ¶§ Windows°¡ ´Ù½Ã DMA °ªÀ» ¼³Á¤

±×¸®°í ÇØ°áÇß´Ù.
Ultra DMA 5·Î ¿¬°áÀÌ µÇ¾ú°í
¿¾³¯ 90M/s¼Óµµ·Î º¹±¸µÇ¾ú´Ù.
´ç¿¬È÷ ÇÁ¸®Â¡°°Àº Çö»óµµ »ç¶óÁ³°í cpuÁ¡À¯À²ÀÌ 100%·Î Ä¡¼Ú´ÂÇö»óµµ »ç¶óÁ³´Ù.

xp¿¡¼­ ssd»ç¿ëÀÚµéÁß ±Þ°ÝÇÑ ¼ÓµµÀúÇϰ¡ ÀÖÀ»½Ã¿£
ÀåÄ¡°ü¸®ÀÚÀÇ IDE¸ðµå°¡ PIO·Î º¯°æµÇ¾îÀÖÁö ¾Ê³ª È®ÀÎÇØº¼ ÇÊ¿ä´Â ÀÖÀ» °Í °°´Ù.

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