david@phys.anu.edu.au (David Baldwin) (06/21/91)
I want to run a magneto-optical (or all-optical) read-writeable removable disk on VAXStation 3100s running VMS or DECStation 3100/5000-200s running Ultrix. I would like to hear from anyone who has connected such a device directly to the SCSI bus, and what drivers or hardware adapters are required. I know that solutions exist for UniBus or Q-bus machines that do their own emulation, or for SUN workstations directly to SCSI, but I need information about direct SCSI connections to DEC workstations. Thanks in advance, David. -- ================================================================================ = David Baldwin Internet: david@phys.anu.edu.au Head, School Computer Unit, Phone: (intl) +61+6+2490104 Research School of Physical Sciences, (Australia) (06) 249 0104 Australian National University FAX: (intl) +61+6+2491884 Canberra, ACT, Australia (Australia) (06) 249 1884 ================================================================================ =
ajc@thendara.pa.dec.com (AJ Casamento) (06/22/91)
In article <1991Jun21.050702.18342@newshost.anu.edu.au> david@phys.anu.edu.au (David Baldwin) writes: >> I want to run a magneto-optical (or all-optical) read-writeable removable disk >> on VAXStation 3100s running VMS or DECStation 3100/5000-200s running Ultrix. >> I would like to hear from anyone who has connected such a device directly to >> the SCSI bus, and what drivers or hardware adapters are required. I know that >> solutions exist for UniBus or Q-bus machines that do their own emulation, or >> for SUN workstations directly to SCSI, but I need information about direct >> SCSI connections to DEC workstations. >> Thanks in advance, >> David. David, A couple of recommendations that I can make to you for the DS5000/xxx series machines: Ten X Technology, Inc. 4807 Spicewood Springs Rd. 512.346.8360 Margaret Williams Building 3, Suite 3200 512.346.9580 FAX Austin, TX 78759 OptiXchange (WORM & Magneto Optical) This device is a multifunction optical disk subsystem capable of reading and writing both WORM and Erasable (M-O) media from the same drive. It is compatible with the VMS, ULTRIX, and other computer operating systems. Features include automatic detection of media type and access to historical data through "timestamping". MAXOPTIX Corporation 2520 Junction Avenue 408.954.9700 San Jose, CA 95134 408.954.9711 FAX TAHITI Highest cpacity MO-erasable drive on the market. Accepts ANSI standard 650 Mbytes or 1 Gbyte of media. Embedded SCSI-2 controller. Highest sustained data transfer rate: 600 Kbytes/second READ; 300 Kbytes/second WRITE. Fastest seek time 35msec average for 650 Mbyte media; 25msec for 1 Gbyte data. Standard 5.25 FH footprint. Supports 512- or 1024-byte sectors. Media removability can be software controlled. Both of these companies are TRI/ADD Program members and I have seen their products run on DS5000/200 series machines (I have even seen the TAHITI used as a system disk...but it's pretty slow). I have not seen them used on VMS machines so I can't vouch for that. All of the information here is presented by the respective companies and I make NO warranty for performance (but tell them I said hello). If you are interested in some additional documentation on DEC's SCSI implementations (particularly the port class driver for VMS) you can find postscript files on (available for anonymous ftp): gatekeeper 16.1.0.2 pub/TriAdd There is both a SCSI Overview and a Developer's Guide available there. I hope that this information helps. Thanx, AJ ********************************************************************** * AJ Casamento "The question is not whether or * * Digital's TRI/ADD Program not the opinions are mine; but * * 100 Hamilton Ave. UCO1-B rather, which of my personalities * * Palo Alto, CA 94301-1616 do they belong to?" * * 415.853.6744 * * ajc@decwrl.dec.com * **********************************************************************