NTMS_DRIVEINFORMATION

The NTMS_DRIVEINFORMATION data structure defines properties specific to a drive object.

typedef struct _NTMS_DRIVEINFORMATION {
  DWORD        Number;
  DWORD        State;
  NTMS_GUID    DriveType;
  TCHAR        szSerialNumber[NTMS_SERIALNUMBER_LENGTH];
  TCHAR        szRevision[NTMS_REVISION_LENGTH];
  TCHAR        szDeviceName[NTMS_DEVICENAME_LENGTH];
  WORD         ScsiPort;
  WORD         ScsiBus;
  WORD         ScsiTarget;
  WORD         ScsiLun;
  SYSTEMTIME   LastCleanedTs;
  DWORD        dwMountCount;
  NTMS_GUID    SavedPartitionId;
  NTMS_GUID    Library;
  GUID         Reserved;
  DWORD        dwDeferDismountDelay;
} NTMS_DRIVEINFORMATION;

Members

Number

Number of the drive in the library. This is set zero or one relative the value based on the drive numbering system of the device. Some changers number drives beginning with zero, and some changers begin with one.

State

State of the drive. This can be one of the following values.

Value	Meaning
NTMS_DRIVESTATE_BEING_CLEANED	The drive is being cleaned and is unavailable.
NTMS_DRIVESTATE_DISMOUNTABLE	If a library is set for lazy dismounts, the medium might be left in the library's drive on a dismount. RSM can satisfy mount requests for loaded and dismounted drives.
NTMS_DRIVESTATE_DISMOUNTED	No medium in the drive.
NTMS_DRIVESTATE_LOADED	The medium is mounted in the drive and is loaded for read and write access.
NTMS_DRIVESTATE_MOUNTED	The medium is mounted in the drive but is not ready for read and write access. This is a temporary state that is used while a drive is waiting for spindle synchronization or loading tape media into the head mechanism.
NTMS_DRIVESTATE_UNLOADED	The medium has been dismounted by the drive and is ready to be opened. This state indicates that the spindle has stopped or a tape media has been returned to the tape cartridge.

DriveType

The drive type object containing the attributes for the drive.

szSerialNumber

A serial number for the drive represented as a string. Devices that do not support serial numbers report NULL for this member.

szRevision

A revision for the drive represented as a string.

szDeviceName

Name of the device used to access the drive. For a tape drive this contains the device name \\.\tape0 or \\.\tape1. Other devices provide the name of a SCSI disk drive or the root of a file system that currently has the device mounted (raw, NTFS, FAT and so forth).

ScsiPort

SCSI host adapter to which the drive is connected.

ScsiBus

SCSI bus to which the drive is connected.

ScsiTarget

SCSI target ID for the drive.

ScsiLun

SCSI logical unit ID for the drive.

LastCleanedTs

Last time the drive was cleaned.

dwMountCount

Number of times the drive has had a medium mounted to it. If the drive supports the reporting of a unique serial number, this value is the number of times the drive has been mounted since it was installed. If the drive does not support the reporting of serial numbers, this member reflects the number of mounts to all of the drives at that location.

SavedPartitionId

Partition ID of the medium that is in the drive. If this value is NULL and the drive is found to be full, the media was loaded by a user and needs to be classified.

Library

Unique ID of the library that contains the drive.

Reserved

Reserved.

dwDeferDismountDelay

Minimum number of seconds a medium will remain in a drive of an online library after a deferred dismount has been performed. The default is 5 minutes. This member does not apply to stand-alone libraries. This member is writable.

Remarks

The NTMS_DRIVEINFORMATION data structure is part of the NTMS_OBJECTINFORMATION structure used for the GetNtmsObjectInformation and SetNtmsObjectInformation functions.

Requirements

  Windows NT/2000: Requires Windows 2000.
  Header: Declared in Ntmsapi.h.