CompuServe Messages

SCSI Express

    12-Jan-93 09:18:07
Sb: #36672-SCSI Express
Fm: Jim Duke [MDI] 70414,1653
To: Gerry Leger 76124,450
Gerry, To be explicit: SCSI Express will not work with ALL CD's. The CD's we will have problems with are those which require more than the simple existence of MSCDEX; or those which communicate directly with a driver. Most CD's say they require MSCDEX; but in reality, all they need is some way to map the CD to a drive letter. MSCDEX provides two basic areas of extensions: 1) it provides access to the CD-ROM through a drive letter; and 2) it provides special extensions such as AUDIO, special information functions, and a way to access the CD directly. Most CD-ROMs only require the CD to be a drive letter; they don't need any of the other extensions. For SCSI Express; the Network shell provides the drive letter; not MSCDEX. How much of a problem will this be? That depends on the titles you have. If ALL the titles you have only need a drive letter; then SCSI Express will work for you. How can you tell in advance? Well, here is a test you can perform (if you have the space) which will determine if the CD-ROM will work with SCSI Express or not: Attach your CD-ROM drive to a workstation, and copy the entire disk to a NetWork directory. Then map a drive to the network directory (possibly using map root), and try the CD-ROM application. If it works, it will work with SCSI Express. If it doesn't; then it probably won't work with SCSI Express; it's that simple. Regards, Jim Duke