[B! HDD] cat-o-ninetailã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

cat-o-ninetail id:cat-o-ninetail

HDDã«é–¢ã™ã‚‹cat-o-ninetailã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (6)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

Ddrescue - GNU Project - Free Software Foundation (FSF)
Ddrescue - Data recovery tool [ English | EspaÃ±ol | FranÃ§ais | Italiano | Russkii ] Introduction GNU ddrescue is a data recovery tool. It copies data from one file or block device (hard disc, cdrom, etc) to another, trying to rescue the good parts first in case of read errors. The ddrescue package also includes ddrescuelog, an auxiliary tool that manipulates ddrescue mapfiles, shows mapfile conten
cat-o-ninetail 2012/02/01
tool

HDD

ä¾¿åˆ©é´¨
ãƒªãƒ³ã‚¯
RAIDãƒ¬ãƒ™ãƒ«ã®è©±: 1+0ã¨6ã¯ã©ã£ã¡ãŒå®‰å…¨ã‹ï¼Ÿ - ãŸã”ã‚‚ã‚Šã™ãƒ¡ãƒ¢
ä»•äº‹ã§ã¡ã‚‡ã£ãã‚‰12å°ã®HDDã‚’ä½¿ã£ãŸRAIDã‚¢ãƒ¬ã‚¤ã‚’çµ„ã‚€ã‚“ã ã‘ã©ã€ãã®æŠ˜ã«ã¡ã‚‡ã†ã©Twitterã§ã€ŒRAID-1+0ã«ã—ãªã„ã¨RAID-6ã¨ã‹æ€–ãã¦ä½¿ãˆã¾ã›ã‚“ã‚ˆï¼ã€ã¨ã„ã†ã‚¦ã‚½å…«ç™¾ãªå†…å®¹ã®Webãƒšãƒ¼ã‚¸ã®URLã‚’è¦‹æŽ›ã‘ãŸã®ã§ã€ã„ã„ã‹ã’ã‚“ãã®ã‚ˆã†ãªè¿·ä¿¡ãŒæ¶ˆãˆåŽ»ã£ã¦ã‚‚ã‚ˆã‹ã‚ã†ã¨æ€ã£ã¦æ›¸ãã“ã¨ã«ã—ãŸã€‚ 1é‡ãƒŸãƒ©ãƒ¼è¨å®šã®RAID-1+0ã¯å®‰å…¨æ€§ã«ãŠã„ã¦RAID-6ã«åŠ£ã‚‹ã€‚ãŸã ã—ã€æ£ã—ãé‹ç”¨ã•ã‚Œã¦ã„ã‚‹å ´åˆã«é™ã‚‹ã€‚*1 çŸ¥ã£ã¦ã„ã‚‹äººã¯ãšã£ã¨å‰ã‹ã‚‰çŸ¥ã£ã¦ã„ã‚‹äº‹å®Ÿã§ã¯ã‚ã‚‹ã‚“ã ã‘ã©ã€æŸå·¨å¤§SIerãªã‚“ã‹ã§ã‚‚é«˜ã„æ–¹ãŒå®‰å…¨ã«æ±ºã¾ã£ã¦ã‚‹çš„ãªæ®‹å¿µãªè„³å‘³å™Œã®æŒã¡ä¸»ãŒã„ã£ã±ã„ã„ã¦ã€Œã„ã‚„ã‚ãƒ‡ãƒ¼ã‚¿ã®å®‰å…¨æ€§ã‚’è€ƒãˆã‚‹ã¨RAID-1+0ã€ã¨ã‹è€ƒãˆã‚‚ãªã—ã«ã‚¯ãƒã«ã—ã€ãã£ã¡ã®æ–¹ãŒãƒ‡ã‚£ã‚¹ã‚¯ãŒã„ã£ã±ã„å£²ã‚Œã¦å¬‰ã—ã„ã‚¹ãƒˆãƒ¬ãƒ¼ã‚¸ãƒ™ãƒ³ãƒ€ãƒ¼ã‚‚ãƒ‹ã‚³ãƒ‹ã‚³ã—ãªãŒã‚‰å¦å®šã›ãšå£²ã‚Šã¤ã‘ã¦åŽ»ã£ã¦ã„ãã¨ã„ã†ã†ã‚ãªã«ã‚’ã™(ry ã¾ã‚ãã‚“ãªæ„Ÿã˜ã§ã€‚ã¡ãªã¿ã«æ£ã—ããªã„é‹
cat-o-ninetail 2011/04/19
system

é‹ç”¨

HDD
ãƒªãƒ³ã‚¯
ãƒ‡ãƒ¼ã‚¿å¾©æ—§.comãŒãƒ•ã‚¡ãƒ¼ãƒ ã‚¦ã‚§ã‚¢éšœå®³ã®å¯¾å¿œå¼·åŒ–ã€å¾©æ—§çŽ‡20ï¼…å¢—ã®è¦å› ã¨ã¯ã€€
cat-o-ninetail 2010/06/23
Hardware

HDD
ãƒªãƒ³ã‚¯
Linuxã‚·ã‚¹ãƒ†ãƒ æ§‹ç¯‰Tips - HDDãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯æ‰‹é †ï¼‹æ€§èƒ½æ¸¬å®šçµæžœä¸€è¦§ï¼ˆhdparm,dd,bonnie++ï¼‰
ãƒãƒ¼ãƒ‰ãƒ‡ã‚£ã‚¹ã‚¯ã®IOæ€§èƒ½ã‚’å·¦å³ã™ã‚‹è¦ç´ ã‚·ã‚¹ãƒ†ãƒ ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒæ€ã†ã‚ˆã†ã«ä¸ŠãŒã‚‰ãªã„å ´åˆã€ãƒãƒ¼ãƒ‰ãƒ‡ã‚£ã‚¹ã‚¯ã®IOæ€§èƒ½ãŒãƒœãƒˆãƒ«ãƒãƒƒã‚¯ã«ãªã£ã¦ã„ã‚‹ã‚±ãƒ¼ã‚¹ãŒå¤šã€…ã‚ã‚Šã¾ã™ã€‚ä¸‹è¨˜ã®é …ç›®ã«ã‚ˆã£ã¦ãƒãƒ¼ãƒ‰ãƒ‡ã‚£ã‚¹ã‚¯ã®IOæ€§èƒ½ã¯å·¦å³ã•ã‚Œã¾ã™ã®ã§ã€æ€§èƒ½é¢ã®å•é¡ŒãŒç™ºç”Ÿã™ã‚‹ã“ã¨ã‚’æœªç„¶ã«é˜²ãã¨ã„ã†è¦³ç‚¹ã§ã¯ã€ã‚µãƒ¼ãƒç’°å¢ƒã®è¨è¨ˆæ®µéšŽã§ã“ã‚‰ã‚‰ã®é …ç›®ã‚’å¿…ãšè¨ˆç”»ã€ç¢ºèªã—ã¦ãŠããŸã„ã¨ã“ã‚ã§ã™ã€‚ ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢RAIDæ§‹æˆ ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢RAIDæ§‹æˆ HDDã®æ€§èƒ½ ï¼ˆã‚¹ãƒ”ãƒ³ãƒ‰ãƒ«å›žè»¢æ•°ã€ã‚·ãƒ¼ã‚¯æ™‚é–“ç‰ï¼‰ ãƒ‘ãƒ¼ãƒ†ã‚£ã‚·ãƒ§ãƒ³ã®ä½ç½® ï¼ˆå†…å‘¨éƒ¨/å¤–å‘¨éƒ¨ï¼‰ ãƒãƒƒãƒ—ã‚»ãƒƒãƒˆã®æ€§èƒ½ RAIDã‚³ãƒ³ãƒˆãƒãƒ¼ãƒ©ãƒ¼ã€SCSIï¼IDEã‚¢ãƒ€ãƒ—ã‚¿ãƒ¼ã®æ€§èƒ½ BIOSè¨å®š Linuxã‚«ãƒ¼ãƒãƒ« ãƒ‰ãƒ©ã‚¤ãƒãƒ¼ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ ãƒ•ã‚¡ãƒ¼ãƒ ã‚¦ã‚§ã‚¢ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ NFSè¨å®š ï¼ˆNFSãƒžã‚¦ãƒ³ãƒˆé ˜åŸŸã®å ´åˆï¼‰ HDDãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯æ‰‹é † ã‚·ã‚¹ãƒ†ãƒ ã®ç’°å¢ƒæ§‹ç¯‰ãŒå®Œäº†ã—ãŸ
cat-o-ninetail 2009/09/10
system

HDD

tuning
ãƒªãƒ³ã‚¯
ä¸è‰¯ãƒ‡ã‚£ã‚¹ã‚¯ã‹ã‚‰ãƒ‡ãƒ¼ã‚¿ã‚’å›žåŽã™ã‚‹GNU ddrescue
ã‚½ãƒ•ãƒˆåï¼šGNU ddrescue é–‹ç™ºè€…ï¼šAntonio Diazæ° ãƒ©ã‚¤ã‚»ãƒ³ã‚¹ï¼šGNU GPL v3ã¾ãŸã¯ãã‚Œä»¥é™ é…å¸ƒå…ƒï¼šhttp://www.gnu.org/software/ddrescue/ddrescue.html GNU ddrescueã¯ï¼Œèªã¿å‡ºã—ã‚¨ãƒ©ãƒ¼ãŒå¤šç™ºã™ã‚‹ã‚ˆã†ãªå£Šã‚Œã‹ã‘ã®è¨˜éŒ²åª’ä½“ã‹ã‚‰ãƒ‡ãƒ¼ã‚¿ã‚’å›žåŽã™ã‚‹ãƒ„ãƒ¼ãƒ«ã§ã™ã€‚èªã¿å‡ºã—å¯èƒ½ãªãƒ‡ãƒ¼ã‚¿ã‚’å…ˆã«å›žåŽã™ã‚‹æ–¹å¼ã‚’æŽ¡ç”¨ã—ã¦ã„ã‚‹ã®ã§ï¼Œä¸€åˆ»ã‚’äº‰ã†äº‹æ…‹ã§ã‚‚ã‚ˆã‚Šå¤šãã®ãƒ‡ãƒ¼ã‚¿ã‚’æ•‘å‡ºã§ãã¾ã™ã€‚ HDDã«ä¸è‰¯ãŒç”Ÿã˜ãŸéš›ï¼Œæœ€ã‚‚é‡è¦ãªã®ã¯ãƒ‡ãƒ¼ã‚¿ã‚’ã„ã¡æ—©ãå›žåŽã™ã‚‹ã“ã¨ã§ã™ã€‚ä¸è‰¯ã®åŽŸå› ãŒã‚³ãƒ³ãƒˆãƒãƒ¼ãƒ©ã‹æ©Ÿæ¢°çš„ãªã‚‚ã®ã‹ã‚’å•ã‚ãšï¼Œå¤šãã®å ´åˆã§æ™‚é–“çµŒéŽã¨å…±ã«å•é¡ŒãŒå¤§ãããªã£ã¦ã—ã¾ã„ï¼Œå›žåŽã§ããªã„ãƒ‡ãƒ¼ã‚¿ãŒå¢—ãˆã‚‹ã‹ã‚‰ã§ã™ã€‚ ãƒ‡ãƒ¼ã‚¿å›žåŽã®ãƒã‚¤ãƒ³ãƒˆã¯ã€Œå•é¡Œãªãå›žåŽã§ãã‚‹ãƒ‡ãƒ¼ã‚¿ã‚’å„ªå…ˆã—ã¦ä½œæ¥ã€ã™ã‚‹ã“ã¨ã§ã™ã€‚èªã¿å‡ºã—ã‚¨ãƒ©ãƒ¼ãŒç”Ÿã˜ã‚‹ãƒ‡ãƒ¼ã‚¿ã«ã“ã ã‚ã£ã¦ãƒªãƒˆãƒ©ã‚¤ã‚’ç¹°ã‚Šè¿”ã™ã¨ï¼Œ
cat-o-ninetail 2009/02/20
Hardware

HDD
ãƒªãƒ³ã‚¯
ä½Žæ¸©ç’°å¢ƒã§ã®HDDã®å‹•ä½œ : DSASé–‹ç™ºè€…ã®éƒ¨å±‹
ã‚ã‚‹ãƒ‡ãƒ¼ã‚¿ã‚»ãƒ³ã‚¿ãƒ¼ã«å°Žå…¥ã—ãŸã‚µãƒ¼ãƒãƒ¼ã®åˆæœŸã‚»ãƒƒãƒˆã‚¢ãƒƒãƒ—æ™‚ã«ä»Šã¾ã§ã«çµŒé¨“ã—ãŸã“ã¨ã®ãªã„HDDãƒˆãƒ©ãƒ–ãƒ«ã«è¦‹èˆžã‚ã‚Œã¾ã—ãŸã€‚ä»Šå›žã¯ãã®ãƒˆãƒ©ãƒ–ãƒ«ã®åŽŸå› ç©¶æ˜Žã¨è§£æ±ºã«è‡³ã‚‹ã¾ã§ã®ãŠè©±ã§ã™ã€‚ HDDã®æ•…éšœï¼Ÿ 7æœˆã€æ–°ãƒ‡ãƒ¼ã‚¿ã‚»ãƒ³ã‚¿ãƒ¼ã§ã®åˆæœŸã‚»ãƒƒãƒˆã‚¢ãƒƒãƒ—æ™‚ã«HDDã®æ›¸ãè¾¼ã¿é€Ÿåº¦ãŒã‚„ãŸã‚‰é…ã„ãƒ‡ã‚£ã‚¹ã‚¯ãŒã‚ã‚‹ã¨ã„ã†è©±ãŒå‡ºã¦ãã¾ã—ãŸã€‚ è©±ã‚’èžãã¨1å°ã ã‘ã§ãªãè¤‡æ•°å°ã«ç™ºç”Ÿã—ã¦ã„ã‚‹ã¨ã®äº‹ã§ã™ã€‚ ãã®æ™‚ã®æ¸¬å®šå€¤ã¯æ¬¡ã®ã‚ˆã†ãªæ„Ÿã˜ã§ã—ãŸã€‚ å®Ÿéš›ã®æ¸¬å®šå€¤ # dd if=/dev/zero of=/mnt/p0/test bs=1M count=2048 ï¼ˆRAIDã‚«ãƒ¼ãƒ‰ã®0ç•ªãƒãƒ¼ãƒˆã«ã‚ã‚‹ãƒ‡ã‚£ã‚¹ã‚¯ï¼‰ 2048+0 records in 2048+0 records out 2147483648 bytes (2.1 GB) copied, 43.8163 seconds, 49.0 MB/s # dd if=/dev/zero
cat-o-ninetail 2008/09/17
ã€ŒSeagateè£½ã® Barracuda ESï¼ˆSATAé«˜è€ä¹…ï¼‰ã‚·ãƒªãƒ¼ã‚ºã«ã¯ã€RAWï¼ˆRead After Writeï¼‰ã¨ã„ã†æ©Ÿèƒ½ãŒã‚ã‚Šã€18ï½ž58â„ƒã®ç¯„å›²å¤–ã®æ¸©åº¦ã§æ©Ÿèƒ½ã™ã‚‹ã‚‰ã—ã„ã€‚

Hardware

HDD

IDC
ãƒªãƒ³ã‚¯
1