Hard-Disk
硬碟慢？
前段時間我注意到，我的桌面變得比平時慢。看起來麻煩的根源是硬碟驅動器（Live USB 沒有這樣的問題） - 但我不明白這是為什麼。有一個資訊
smartctl- 任何人都可以解釋一下，可能出了什麼問題？smartctl --all /dev/sda smartctl 6.1 2013-03-16 r3800 [x86_64-linux-3.8.2] (local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Scorpio Blue Serial ATA (AF) Device Model: WDC WD5000BPVT-00HXZT3 Serial Number: WD-WXF1E62KSHM2 LU WWN Device Id: 5 0014ee 658207174 Firmware Version: 01.01A01 User Capacity: 500 107 862 016 bytes [500 GB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5400 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS (minor revision not indicated) SATA Version is: SATA 2.6, 3.0 Gb/s Local Time is: Sun May 4 23:07:15 2014 NOVT 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: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. 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: (12060) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. 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: ( 2) minutes. Extended self-test routine recommended polling time: ( 120) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x7035) SCT Status supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 8 3 Spin_Up_Time 0x0027 178 177 021 Pre-fail Always - 2083 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 966 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 095 095 000 Old_age Always - 3887 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 966 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 48 193 Load_Cycle_Count 0x0032 185 185 000 Old_age Always - 46771 194 Temperature_Celsius 0x0022 103 100 000 Old_age Always - 44 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 3884 - # 2 Short offline Completed without error 00% 2834 - SMART Selective self-test log data structure revision number 1 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS 1 0 0 Not_testing 2 0 0 Not_testing 3 0 0 Not_testing 4 0 0 Not_testing 5 0 0 Not_testing Selective self-test flags (0x0): After scanning selected spans, do NOT read-scan remainder of disk. If Selective self-test is pending on power-up, resume after 0 minute delay.
如果 HDD 必須重新讀取開始失敗的壞塊或壞扇區，它將嘗試多次重新讀取給定的部分，直到能夠這樣做。這種行為將表現為硬碟“減速”，但這是您遇到的多次從磁碟讀取給定區域的行為。
通常，當這種情況發生時，我將通過HDAT2或SpinRite執行 HDD以確定磁碟上是否有任何壞塊，並指示這兩個工具中的任何一個嘗試修復和/或從有缺陷的塊中恢復數據。
這只是一個短期的解決辦法；通常，如果它繼續發生，那麼它通常是一個更大問題的徵兆，即 HDD 將在不久的將來發生故障。如果是這種情況，那麼我將開始計劃在問題驅動器實際發生故障之前更換並從問題驅動器中遷移數據。