0
我正在写一个SMART监视器工具,并设法用SMART_REA_DATA命令获得SMART属性[当前,最差,原始数据],但我也需要阈值,并且我搜索了ATA documentation,但是我还没有发现任何关于如何阅读门槛。有谁知道我从哪里可以获得这些价值?我在哪里可以找到HDD的SMART阈值?
我正在写一个SMART监视器工具,并设法用SMART_REA_DATA命令获得SMART属性[当前,最差,原始数据],但我也需要阈值,并且我搜索了ATA documentation,但是我还没有发现任何关于如何阅读门槛。有谁知道我从哪里可以获得这些价值?我在哪里可以找到HDD的SMART阈值?
我找到了答案:)这很简单。要获得阈值,必须在特征寄存器中使用0xD1,并将其余配置为0xD0(SMART_READ_DATA)命令。我没有找到它,因为0xD1它是一个过时的功能......但它似乎仍然使用,即使在新的硬盘驱动器。
为结果的结构可以是这样的:
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;
以及用于获取功能属性的阈值:
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;