Attached Link: http://www.panasonic.com/industrial_oem/computer/storage/dvd-ram/dvd-ram_default.htm

Here's Panasonic's product page, they are I think, the biggest manufacturer of DVD-RAM optical storage units... "The leading producer of DVD-RAM drives, Panasonic's second-generation 4.7GB single-sided and 9.4GB double-sided rewritable industry standard drives and media provide superior performance and reliability. Fully compliant with the DVD Forum's standards, the single-sided media is capable of storing a full two-hours of MPEG2 video. Panasonic's new drives and media offer unprecedented media interchangeability and seven times the capacity of CD-R and CD-RW...all for less than $.005/MB. Offered with both SCSI and ATAPI interfaces, the drive reads industry-standard DVD-ROM, DVD-Video, DVD-R, CD-ROM, CD-R/RW, CD-DA, Photo CD, and Video CD media. The random-access, drag-and-drop storage media provides in excess of 100,000 write/rewrite cycles and data life in excess of 30 years."