hdparm 设置硬盘自动休眠

检查硬盘是否支持 hdparm
有以下输出代表硬盘支持 hdparm 管理。

$ sudo hdparm -y /dev/sda

/dev/sda:
 issuing standby command

设置硬盘自动休眠

$ sudo hdparm -S 240 /dev/sda

/dev/sda:
 setting standby to 240 (20 minutes)

使用 hdparm 查看硬盘信息

$ sudo hdparm -I /dev/sda

/dev/sda:

ATA device, with non-removable media
    Model Number:       ST1000DM003-1ER162
    Serial Number:      S4Y05JDN
    Firmware Revision:  CC43
    Transport:          Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0
Standards:
    Used: unknown (minor revision code 0x001f)
    Supported: 9 8 7 6 5
    Likely used: 9
Configuration:
    Logical        max    current
    cylinders    16383    16383
    heads        16    16
    sectors/track    63    63
    --
    CHS current addressable sectors:   16514064
    LBA    user addressable sectors:  268435455
    LBA48  user addressable sectors: 1953525168
    Logical  Sector size:                   512 bytes
    Physical Sector size:                  4096 bytes
    Logical Sector-0 offset:                  0 bytes
    device size with M = 1024*1024:      953869 MBytes
    device size with M = 1000*1000:     1000204 MBytes (1000 GB)
    cache/buffer size  = unknown
    Form Factor: 3.5 inch
    Nominal Media Rotation Rate: 7200
Capabilities:
    LBA, IORDY(can be disabled)
    Queue depth: 32
    Standby timer values: spec'd by Standard, no device specific minimum
    R/W multiple sector transfer: Max = 16    Current = 16
    Advanced power management level: 254
    Recommended acoustic management value: 208, current value: 208
    DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
         Cycle time: min=120ns recommended=120ns
    PIO: pio0 pio1 pio2 pio3 pio4
         Cycle time: no flow control=120ns  IORDY flow control=120ns
Commands/features:
    Enabled    Supported:
       *    SMART feature set
            Security Mode feature set
       *    Power Management feature set
       *    Write cache
       *    Look-ahead
       *    Host Protected Area feature set
       *    WRITE_BUFFER command
       *    READ_BUFFER command
       *    DOWNLOAD_MICROCODE
       *    Advanced Power Management feature set
            Power-Up In Standby feature set
       *    SET_FEATURES required to spinup after power up
            SET_MAX security extension
       *    48-bit Address feature set
       *    Device Configuration Overlay feature set
       *    Mandatory FLUSH_CACHE
       *    FLUSH_CACHE_EXT
       *    SMART error logging
       *    SMART self-test
       *    General Purpose Logging feature set
       *    WRITE_{DMA|MULTIPLE}_FUA_EXT
       *    64-bit World wide name
            Write-Read-Verify feature set
       *    WRITE_UNCORRECTABLE_EXT command
       *    {READ,WRITE}_DMA_EXT_GPL commands
       *    Segmented DOWNLOAD_MICROCODE
            unknown 119[6]
       *    Gen1 signaling speed (1.5Gb/s)
       *    Gen2 signaling speed (3.0Gb/s)
       *    Gen3 signaling speed (6.0Gb/s)
       *    Native Command Queueing (NCQ)
       *    Phy event counters
       *    READ_LOG_DMA_EXT equivalent to READ_LOG_EXT
       *    DMA Setup Auto-Activate optimization
            Device-initiated interface power management
       *    Software settings preservation
            unknown 78[7]
       *    SMART Command Transport (SCT) feature set
       *    SCT Write Same (AC2)
            unknown 206[7]
            unknown 206[12] (vendor specific)
       *    reserved 69[7]
Security:
    Master password revision code = 65534
        supported
    not    enabled
    not    locked
        frozen
    not    expired: security count
        supported: enhanced erase
    116min for SECURITY ERASE UNIT. 116min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 5000c50074cd38af
    NAA        : 5
    IEEE OUI    : 000c50
    Unique ID    : 074cd38af
Checksum: correct

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