Description:

The sdparm utility outputs and in some cases modifies SCSI device parameters.

When the SCSI device is a disk, sdparm's role is similar to its namesake: the
Linux hdparm utility which is for ATA disks that usually have device names
starting with "hd".
More generally sdparm can be used to output and modify parameters on any device
that uses a SCSI command set. Apart from SCSI disks, such devices include
CD/DVD drives (irrespective of transport), SCSI and ATAPI tape drives and SCSI
enclosures.

A small set of commands associated with starting and stopping the media,
loading and unloading removable media and some other housekeeping functions
can also be sent with this utility.