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Senior Member
 
加入日期: Sep 2003 您的住址: 台中
文章: 1,495
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引用:
lag很大 
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只看得見別人在過爽日子嗎？ 什麼時候努力讓自己過得爽一點呢？ |
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2011-06-01, 04:27 PM
#11
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Major Member
加入日期: Feb 2006 您的住址: 滄者極限
文章: 272
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還有很多人不知道說....回個Lag...
代表說您們都知道了...這也不錯啦 但是如果您們早就知道...為什麼不多提醒網友們? 只是在文章出現時..回一個..Lag...
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此文章於 2011-06-01 04:59 PM 被 ST-15K.3 編輯. |
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2011-06-01, 04:54 PM
#12
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Power Member
加入日期: Jan 2008
文章: 652
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此文章於 2011-06-01 05:24 PM 被 andrew0701 編輯. |
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2011-06-01, 05:19 PM
#13
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Major Member
加入日期: Feb 2006 您的住址: 滄者極限
文章: 272
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2011-06-01, 05:23 PM
#14
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Advance Member
  加入日期: Sep 2005
文章: 307
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請問一下
上面說WD硬碟有錯時會進行2分鐘的修復動作 但HBA允許的修復時間僅為7~15秒 那是不是說硬碟在進行錯誤修復其實只要花幾秒鐘而已 不然為什麼HBA會把時間定在7~15秒 引用:
所以SAS的硬碟沒有這種問題嗎  |
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2011-06-01, 05:46 PM
#15
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Junior Member
加入日期: Jun 2010
文章: 803
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引用:
就是要強迫購買企業版跟迅猛龍系列  話說1T的企業版可以買三顆藍標500G了
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良興卡號：13214833 此文章於 2011-06-01 05:49 PM 被 魚骨頭 編輯. |
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2011-06-01, 05:48 PM
#16
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Elite Member
加入日期: May 2002 您的住址: 地球的上面..
文章: 5,854
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引用:
"但HBA允許的修復時間僅為7~15秒" 這和廠商的RAID設計有關.... "所以SAS的硬碟沒有這種問題嗎 "量身訂做的SAS規範怎麼會有這種問題...  ....但是這塊和SMART有相關係... 來看看我以前寫的這串... 這是以LSI MegaRAID Controller的作法 >>Q: WebBIOS中有一個SMART Polling屬性? 是做甚麼用的呢? >>A: 主要用以輪詢一段時間, 預設是300秒. 透過一個特殊的polling timer來記時, 當達到300秒的時候, RAID controller便會要求HDD的SMART報告. 診斷HDD的當前運作情況. >>Q: TLER/ERC/CCTL會不會跟SMART Polling有關係呢?.. >>A: 多多少少有些關係, 但是不是SMART Polling跟TLER/ERC/CCTL成絕對關係. SMART polling and TLER are only related in the sense that both deal with disk errors. The controller does SMART poll, but this is not related to TLER. TLER/ERC/CCTL的設計就是防範當error correction超過RAID controller所規定的threshold時, RAID controller將會把超時的HDD判定為failed並且將他drop, 也許這個error correction可能是deep的情況. 關於LSI RAID controller所規定的threshold, LSI表示如下: The time-out threshold is ten seconds. 前面講過, 當LSI RAID controller的polling timer達到300秒的時候, 變遍歷收集每顆硬碟的SMART資訊. 在TLER/ERC/CCTL部分, 如果取得的SCT ERC Timer偵測發現超過規定的threshold, 也就是10秒的情況下. LSI RAID controller便會將該超時的HDD給強制drop. 在這個案例下, SCT ERC Timer記載的value便會是0秒, 也就是unlimited. 如果帶有TLER/ERC/CCTL支持的HDD, 通常SCT ERC Timer設定會是在7 sec以下, 這時SCT ERC Timer<timeout threshold. 便不會將HDD給強制drop掉. 這將會提升對Storage System很大的穩定性. LSI=> A drive will drop after 10 seconds 但是ERC不能開嗎??.. 未必... WD開不了但是其他牌的話...  ..C:\Program Files (x86)\smartmontools\bin>smartctl --scan /dev/sdi -d ata [ATA] ------------------------------------------------------------------------------------------------------ C:\Program Files (x86)\smartmontools\bin>smartctl -a /dev/sdi smartctl 5.40 2010-10-16 r3189 [i686-w64-mingw32-2008r2(64)] (sf-win32-5.40-1) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: Hitachi HDS723020BLA642 Serial Number: MN1220F30GYSED Firmware Version: MN6OA580 User Capacity: 2,000,398,934,016 bytes Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 8 ATA Standard is: ATA-8-ACS revision 4 Local Time is: Wed Mar 02 11:36:18 2011 TST SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x84) Offline data collection activity was suspended by an interrupting command from host. Auto Offline Data Collection: Enabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: (18950) seconds. Offline data collection capabilities: (0x5b) SMART execute Offline immediate. Auto Offline data collection on/off supp ort. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. No Conveyance Self-test supported. Selective Self-test supported. SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported. General Purpose Logging supported. Short self-test routine recommended polling time: ( 1) minutes. Extended self-test routine recommended polling time: ( 255) minutes. SCT capabilities: (0x003d) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. ------------------------------------------------------------------------------------------------------ C:\Program Files (x86)\smartmontools\bin>smartctl -l scterc /dev/sdi smartctl 5.40 2010-10-16 r3189 [i686-w64-mingw32-2008r2(64)] (sf-win32-5.40-1) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net SCT Error Recovery Control: Read: Disabled Write: Disabled ------------------------------------------------------------------------------------------------------ C:\Program Files (x86)\smartmontools\bin>smartctl -l scterc,70,70 /dev/sdi smartctl 5.40 2010-10-16 r3189 [i686-w64-mingw32-2008r2(64)] (sf-win32-5.40-1) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net SCT Error Recovery Control: Read: 70 (7.0 seconds) Write: 70 (7.0 seconds) ------------------------------------------------------------------------------------------------------ C:\Program Files (x86)\smartmontools\bin>smartctl -l scterc /dev/sdi smartctl 5.40 2010-10-16 r3189 [i686-w64-mingw32-2008r2(64)] (sf-win32-5.40-1) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net SCT Error Recovery Control: Read: 70 (7.0 seconds) Write: 70 (7.0 seconds) ------------------------------------------------------------------------------------------------------ 此文章於 2011-06-01 06:16 PM 被 vxr 編輯. |
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2011-06-01, 06:12 PM
#17
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*停權中*
加入日期: Oct 2005
文章: 238
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我用WD 2TB綠標2顆組RAID1
用銳銨的陣列盒，用好幾個月了 都正常 |
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2011-06-01, 09:39 PM
#18
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Junior Member
加入日期: Mar 2003
文章: 855
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引用:
官方都說了!不建議!! 硬要折紙飛機,飛上天,摔了,也只能自認倒霉. 資料是您自己的...  |
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2011-06-01, 10:04 PM
#19
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*停權中*
加入日期: Oct 2005
文章: 238
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引用:
他的意思是企業用戶不建議使用 LSI的HBA和外面市售陣列盒規範不一樣 所以沒這問題 |
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2011-06-01, 10:23 PM
#20
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