I just packaged sdparm (because the .deb on the homepage is generated by alien ;-)):
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 Linux namesake: hdparm 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.