Metadata associated with a band is set with an IOCTL_EHSTOR_BANDMGMT_SET_BAND_METADATA request. The metadata for a band serves as a data area for a key manager application.

Major Code


Input Buffer

The input buffer at Irp->AssociatedIrp.SystemBuffer must contain a SET_BAND_METADATA_PARAMETERS and possibly an AUTH_KEY structure along with the new metadata to set for the band.

If the AuthKeyOffset member of SET_BAND_METADATA_PARAMETERS is set to EHSTOR_BANDMGR_NO_KEY, the input data in the system buffer need not include an AUTH_KEY structure.

Input Buffer Length

Parameters.DeviceIoControl.InputBufferLength indicates the size, in bytes, of the buffer, which must be at least sizeof (SET_BAND_METADATA_PARAMETERS) + MetadataSize + sizeof(AUTH_KEY).

Output Buffer


Output Buffer Length


Input / Output Buffer

Input / Output Buffer Length

Status Block

One of the following values may be returned in the Status field:

Status Value Description
STATUS_SUCCESS The metadata was set for the selected band.
STATUS_INVALID_DEVICE_REQUEST Storage device does not support band management.
STATUS_INVALID_BUFFER_SIZE The input buffer size is incorrect.
STATUS_INVALID_PARAMETER Information in the input buffer is invalid.
STATUS_NOT_FOUND Band was not found for the selection criteria provided.
STATUS_IO_DEVICE_ERROR Communication failed. The storage device might be incompatible with security protocols.


Metadata can also be erased by using this IOCTL. To erase metadata for a band, set the metadata portion of input buffer to all zeros or some other erase pattern. To ensure removal of sensitive information in metadata blobs, this erase operation should be performed prior to deleting a band from the silo driver's band table.


Windows version Available in Windows 8 and later versions of Windows.
Header ehstorbandmgmt.h (include EhStorBandMgmt.h)

See Also