VAX-VMS Migration Notes:

Menu: Original uVAX-4300 | New VAX-6420 | Example Boots

Our original uVAX-4300 based system

                                 +------+------+------+
                                | RZ28 | RZ28 | RZ28 | SCSI bus
                                | #50  | #51  | #52  +------------+
                                +------+------+------+            |
                                                                  |
+-----------------+      +------+------+------+               +---+---+
| uVAX-4300       |      | RF71 | RF71 | RF71 |               | HSD05 |
| CPU     +-------x------+ #0   | #1   | #2   +---------------+ #5    +-DT/e
| DSSI#0--+--DT/i |      +------+------+------+               +-------+
|                 |        DS0    DS1    DS2
| DSSI#1--+--A----x-DT/e +------+------+------+------+------+ +-------+
|         +--B----x------+ RF71 | RF71 | RF71 | RF71 | RF71 +-+ HSD05 +-DT/e
| Internal Bus    |      | #10  | #11  | #12  | #13  | #14  | | #15   |
+-----------------+      +------+------+------+------+------+ +---+---+
| Q-Bus Adapters  |                                               |
| KZQSA   +--A----x-ST/e        +------+------+------+            |
| SCSI#0--+--B----x------+      | RZ28 | RZ28 | RZ28 +------------+
|                 |      |      | #150 | #151 | #152 | SCSI bus
+-----------------+      |      +------+------+------+
                         |
     +--------+--------+ |
ST/e-+ RRD42  | Exa8mm +-+
     | dka200 | mka300 |   <<<--- VMS names
     +--------+--------+
 
Legend:
DSSI#0 = Embedded DSSI (SHAC) controller #0
DSSI#1 = Embedded DSSI (SHAC) controller #1
SCSI#0 = Optional Q-Bus/SCSI Controller (KZQSA)
DT/i   = DSSI Bus Terminator Internal
DT/e   = DSSI Bus Terminator External
ST/e   = SCSI Bus Terminator External
RF71   = 350 Megabyte DSSI based Hard Drive
RZ28   = 1.2 Gigabyte SCSI based Hard Drive
DS     = Disk Shadow (example: DS0 is a shadow set volume composed of mirror
         disks #0 and #10. If one of the drives crash, the mate drive can carry
         on independently). This requires an optional "Shadow License".
RRD42  = CD ROM
Exa8mm = Exabyte 8mm Tape
 
Notes:
1. DSSI#1-A may connect to more DSSI Bus #1 devices, or to the DSSI bus of
   another CPU (if both CPUs are part of a VAXcluster)
2. every DSSI port must be connected to either a DSSI terminator or a DSSI cable
   which is coonected to one or more DSSI devices with a termination at the end
   of the chain.
3. to the best of my knowledge, the internal DSSI terminators cannot be
   removed.
4. Wether physically visible or not, there is always a terminator at each end of
   both DSSI and SCSI busses.
5. both HSD05 units have been optioned to respond to DSSI #5
6a.to boot drive #0   (on dssi bus #0           ), type "b  dia0"
6b.to boot drive #51  (on dssi bus #0, hsd05 #5 ), type "b  dia51"
6c.to boot drive #10  (on dssi bus #1           ), type "b  dib10"
6d.to boot drive #151 (on dssi bus #1, hsd05 #15), type "b  dib151"

Our new VAX-6000-420 based system

                                  DS5a
                                +------+------+------+
                                | RZ28 | RZ28 | RZ28 | Internal
                                | #50  | #51  | #52  +------------+
                                +------+------+------+ SCSI Bus   |
                                                                  |
+-----------------+      +------+------+------+               +---+---+
| VAX-6420        |      | RF71 | RF71 | RF71 |               | HSD05 |
| CPU     +-------x------+ #0   | #1   | #2   +---------------+ #5    +-DT/e
| DSSI#0--+--DT/i |      +------+------+------+               +-------+
|                 |        DS0    DS1    DS2
| DSSI#1--+--DT/i |      +------+------+------+------+------+ +-------+
|         +-------x------+ RF71 | RF71 | RF71 | RF71 | RF71 +-+ HSD05 +-DT/e
| XMI Bus         |      | #10  | #11  | #12  | #13  | #14  | | #15   |
+-----------------+      +------+------+------+------+------+ +---+--++
                                                                  |  |
                                +------+------+------+ Internal   | ST/e
                External +------+ RZ28 | RZ28 | RZ28 +------------+
                SCSI bus |      | #150 | #151 | #152 | SCSI bus
                         |      +------+------+------+
                         |        DS5b
     +--------+--------+ |
ST/e-+ RRD42  | Exa8mm +-+
     | dia153 | mu154  | <<<--- VMS names
     +--------+--------+
 
Legend:
DSSI#0 = XMI based DSSI (KFMSA) controller #0
DSSI#1 = XMI based DSSI (KFMSA) controller #1
DT/i   = DSSI Bus Terminator Internal
DT/e   = DSSI Bus Terminator External
ST/e   = SCSI Bus Terminator External
RF71   = 350 Megabyte DSSI based Hard Drive
RZ28   = 1.2 Gigabyte SCSI based Hard Drive
DS     = Disk Shadow (example: DS0 is a shadow set volume composed of mirror
         disks #0 and #10. If one of the drives crash, the mate drive can carry
         on independently). This requires an optional "Shadow License".
RRD42  = CD ROM
Exa8mm = Exabyte 8mm Tape
 
Notes:
1. DSSI#1-A may connect to more DSSI Bus #1 devices, or to the DSSI bus of
   another CPU (if both CPUs are part of a VAXcluster)
2. every DSSI port must be connected to either a DSSI terminator or a DSSI cable
   which is coonected to one or more DSSI devices with a termination at the end
   of the chain.
3. to the best of my knowledge, the internal DSSI terminators cannot be
   removed.
4. Wether physically visible or not, there is always a terminator at each end of
   both DSSI and SCSI busses.
5a.both HSD05 units have been optioned to respond to DSSI #5
5b.the internal SCSI head/tail termination has been removed in HSC05 #15 so that
   an external cable could be used to connect to the CD-ROM adn 8mm Tape. This
   method was cheaper than buying a SCSI adapter for our VAX-6420
6a.Note that the CD-ROM and 8mm Tape are now being managed by HSD15 #15.
6b.This means that the VMS names for these devices has changed since they where
   moved from the Q-Bus SCSI controller (KFQZA)
6c.When mounting the CD-ROM from VMS you must use the /NOWRITE switch since VMS
   now thinks that the CD-ROM is an RF series drive capable of writing.
6d.VMS now thinks that the 8mm tape is a TU81 capable of using the /DENSITY
   switch. You should always use /DENSITY=6250. Other values work but seem to
   transfer data more slowly.
7a.to boot drive #0   (on dssi bus #0           ), type "b /x:4 /n:20000 di0"
7b.to boot drive #51  (on dssi bus #0, hsd05 #5 ), type "b /x:4 /n:20005 di33"
7c.to boot drive #10  (on dssi bus #1           ), type "b /x:4 /n:30000 dia"
7d.to boot drive #151 (on dssi bus #1, hsd05 #15), type "b /x:4 /n:30005 di97"

Example Boots

uVAX-3500
 
 >>>b dua0   boots drive 0 of first (a) controller (depends on Q-Bus address)
 >>>b dub1   boots drive 1 of second (b) controller (depends on Q-Bus address)
 
 
Notes:
1. The KFQSA (Q-Bus/DSSI Adapter) is a programmable device that can appear to
   the Q-Bus like multiple device controllers.
2. The KDA-50 (Q-Bus/MSCP Adapter) is not programmable so it always looks like
   one controller.

uVAX-4300
 
 >>>b dia0   boots drive with MSCP drive number 0  on DSSI Bus #0
 >>>b dib10  boots drive with MSCP drive number 10 on DSSI Bus #1
 
Notes:
1. drive numbers are in decimal
2. diaX is on DSSI bus #0 (embedded controller)
3. dibX is on DSSI bus #1 (embedded controller)
4. Sometimes the MSCP Drive number is the DSSI node number which means that the
   number is restricted to the range 0-7
5. Sometimes the MSCP Drive number is programmed in drive firmware which means
   that the number is restriced to the range 0-9999

VAX-6420
 
 >>>b /x:4 /b:0 /n:20001 di0
         |    |    |   |   +---- MSCP UNITNUM (0=0)
         |    |    |   +-------- DSSI ID# 1
         |    |    +------------ 2=DSSI Bus #0 (a.k.a. port 1)
         |    |                  3=DSSI Bus #1 (a.k.a. port 2)
         |    +----------------- no BI slot selected
         +---------------------- KFMSA in XMI slot 4
 
 >>>b /x:4 /b:0 /n:30001 dia
         |    |    |   |   +---- MSCP UNITNUM (a=10)
         |    |    |   +-------- DSSI ID# 1
         |    |    |             2=DSSI Bus #0 (a.k.a. port 1)
         |    |    +------------ 3=DSSI Bus #1 (a.k.a. port 2)
         |    +----------------- no BI slot selected
         +---------------------- KFMSA in XMI slot 4
 
Notes:
1. drive numbers are in hexadecimal (9=9, a=10, b=11, etc.)
2a.The first example could be a boot from an RFxx series drive if...
      DSSI Plug #1 is installed
      MSCP FORCEUNI=0 (drive MSCP is not forced to be DSSI plug number)
      MSCP UNITNUM=0
2b.The first example could be a boot from HSD Based SCSI drive #0 with a DSSI
   ID# of 1
3a.The second example could be a boot from an RFxx series drive if...
      DSSI Plug #1 is installed
      MSCP FORCEUNI=0 (drive MSCP is not forced to be DSSI plug number)
      MSCP UNITNUM=10
3b.The second example could be a boot from HSD Based SCSI drive #10 with a DSSI
   ID# of 1
4. To boot either an RFxx series drive with an MSCP number of 151, or an
   HSD Based SCSI drive with a SCSI ID# of 151, you must boot di97 because a
   hexadecimal number is required.
 
   proof: 151/16 = 9 with a remainder of 7

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Neil Rieck
Kitchener - Waterloo - Cambridge, Ontario, Canada.