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我正在寫一個SMART監視器工具,並設法用SMART_REA_DATA命令獲得SMART屬性[當前,最差,原始數據],但我也需要閾值,並且我搜索了ATA documentation,但是我還沒有發現任何關於如何閱讀門檻。有誰知道我從哪裏可以獲得這些價值?我在哪裏可以找到HDD的SMART閾值?
我正在寫一個SMART監視器工具,並設法用SMART_REA_DATA命令獲得SMART屬性[當前,最差,原始數據],但我也需要閾值,並且我搜索了ATA documentation,但是我還沒有發現任何關於如何閱讀門檻。有誰知道我從哪裏可以獲得這些價值?我在哪裏可以找到HDD的SMART閾值?
我找到了答案:)這很簡單。要獲得閾值,必須在特徵寄存器中使用0xD1,並將其餘配置爲0xD0(SMART_READ_DATA)命令。我沒有找到它,因爲0xD1它是一個過時的功能......但它似乎仍然使用,即使在新的硬盤驅動器。
爲結果的結構可以是這樣的:
SMART_ATTRIBUTE = packed record
ID: Byte;
case byte of
0: (Flags: Word;
CurrValue: Byte;
WorstValue: Byte;
RawData: array [0..5] of Byte;
Reserved0: Byte;);
1: (Threshold: Byte;
Reserved1: array [0..9] of Byte;);
end;
SMART_DATA = packed record
Version: Word;
Attribute: array [0..29] of SMART_ATTRIBUTE;
end;
以及用於獲取功能屬性的閾值:
function GetSMARTData(Drive:Byte; Feature:Byte; var SMARTData:SMART_DATA):Boolean;
var hDrive: THandle;
atpexb: ATA_PASS_THROUGH_EX_WITH_BUFFERS;
bytesRet: DWord;
begin
//Result:=false;
hDrive:=CreateFile(PWideChar('\\.\PhysicalDrive'+IntToStr(Drive)), GENERIC_READ or GENERIC_WRITE,
FILE_SHARE_READ or FILE_SHARE_WRITE, nil, OPEN_EXISTING, 0, 0);
if hDrive = INVALID_HANDLE_VALUE then RaiseLastOSError;
try
bytesRet:=0;
FillChar(atpexb,SizeOf(atpexb),0);
atpexb.Length:=SizeOf(ATA_PASS_THROUGH_EX);
atpexb.AtaFlags:=ATA_FLAGS_DATA_IN;
atpexb.DataTransferLength:=512;
atpexb.TimeOutValue:=1;
atpexb.DataBufferOffset:=SizeOf(ATA_PASS_THROUGH_EX);
atpexb.CurrentTaskFile.Command:=WIN_SMART;
atpexb.CurrentTaskFile.Features:=Feature;
atpexb.CurrentTaskFile.LBA_Mid:=$4F;
atpexb.CurrentTaskFile.LBA_High:=$C2;
if not DeviceIoControl(hDrive, IOCTL_ATA_PASS_THROUGH, @atpexb, SizeOf(ATA_PASS_THROUGH_EX),
@atpexb, SizeOf(atpexb), bytesRet, nil) then RaiseLastOSError;
Result:=(atpexb.CurrentTaskFile.Command and 1)=0;
if Result then Move(atpexb.DataBuff, SMARTData, SizeOf(SMART_DATA));
finally
CloseHandle(hDrive);
end;
end;