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伊勢雅英ã®IT見èžéŒ² SCSIユーザも注目!? 㮠シリアルATA Native Command Queuing
シリアルATAã®åˆ©ç”¨ç¯„囲拡大を目指ã—ã¦ç–定ä¸ã®æ¬¡ä¸–代仕様「シリアルATA IIã€ãŒç™ºè¡¨ã•ã‚Œã¦1年を経éŽã—ãŸãŒã€ä»Šå¹´9月ã«ã¯ã‚·ãƒªã‚¢ãƒ«ATA IIã®æ©Ÿèƒ½ã‚’強化ã™ã‚‹æ‹¡å¼µä»•æ§˜ãŒã„ãã¤ã‹è¿½åŠ ã•ã‚Œã‚‹ãªã©ã€ã‹ãªã‚Šç©æ¥µçš„ãªæ§˜åãŒã†ã‹ãŒãˆã‚‹ã€‚今回ã¯ã€ã‚·ãƒªã‚¢ãƒ«ATA製å“ã®é–‹ç™ºã«æºã‚るベンダã‹ã‚‰ã®ã‚³ãƒ¡ãƒ³ãƒˆã‚’交ãˆãªãŒã‚‰ã€ã‚·ãƒªã‚¢ãƒ«ATA IIã§æœ€ã‚‚注目ã—ãŸã„新機能「Native Command Queuingã€ã®ä»•çµ„ã¿ã‚’解説ã—ã¦ã„ã。 â—多ãã®PCã§ãƒ‘フォーマンスå‘上を期待ã§ãã‚‹Native Command Queuing シリアルATA IIã¯ã€ã‚µãƒ¼ãƒã‚„ワークステーションã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸å‘ã‘ã®æ‹¡å¼µæ©Ÿèƒ½ã‚’æä¾›ã™ã‚‹ã‚·ãƒªã‚¢ãƒ«ATA 1.0ã®è£œåŠ©ä»•æ§˜ã§ã‚る。シリアルATA IIã«è¿½åŠ ã•ã‚ŒãŸæ©Ÿèƒ½ã«ã¯ã€ãƒ‡ãƒ¼ã‚¿ã‚¢ã‚¯ã‚»ã‚¹ã®åŠ¹çŽ‡ã‚’高ã‚ã‚‹Native Command Queuingã€ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ã®ç体内部(温度ã€å†·å´ãƒ•ã‚¡ãƒ³ã®å›ž
Tagged Command Queuing - Wikipedia
Tagged Command Queuing (TCQ) is a technology built into certain ATA and SCSI[1] hard drives. It allows the operating system to send multiple read and write requests to a hard drive. ATA TCQ is not identical in function to the more efficient Native Command Queuing (NCQ) used by SATA drives.[2] SCSI TCQ does not suffer from the same limitations as ATA TCQ. Without TCQ, an operating system was limite
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