New to VAX (4000/200)

[Curtis H. Wilbar Jr.]

I am the 'proud' owner of a VAX 4000/200.

I have not tried to do much with it yet, first I'll indicate it's 
config, then my questions
(as I'm 'new' to VAX (I admin'd one for a bit 14 years ago... but I 
deferred to several
folk on campus as I was new to admin'ing VMS and I didn't stay in the 
role long enough
to really pick much up)).

M9715-AA        VAX 4000 internal card (terminates DSSI and SCSI busses)
M7626-AA        KA660 CPU
M7622-AT        16M Memory
M7622-BF        8M Memory
M3108-PA        DSV11-S 2 Line Sync Comm
SI-SC 1000      System Industries SCSI card
M3118-YA        CXA16-M 16 Async Line
M3118-YA    CXA16-M 16 Async Line
M3119-YA     CXA08-M 8 Async Line
M3118-YA    CXA16-M 16 Async Line
M7559-00        TQK70 Tape controller

are the cards present (from slot 0? (rightmost slot))

And it has 3 DSSI drives, 2 5.25" RF31 (381M) and 1 3.5" RF36 (in one of 
the 'rail' sets
that will support 2 3.5" drives) (1.6G).

the 2 RF31s are ID 0 and 1
the RF36 is ID 2

It also has a TK70.

Now onto the questions:

1. How is 24M of RAM ?  Should I be on the lookout for more ?
2. What releases of VMS, Vax Ultrix, etc should I limit myself to based 
on 24M and KA660 ?
3. Was there a DSSI version of TK70 ?
4. 4000/200 does not have SCSI, correct ?  (other than someone added an 
SI SC-1000)
5. any idea if a SCSI CD can be booted via the SI SC-1000 ?  (boot cmds 
would be ?)
6. This is supposed to have some version of VMS on it... I have no PW... 
pointers to 'break in'
    procedure and password reset ?  What is the default sysadmin 
account  as well ?
7. There is what looks like a 50 pin scsi terminator (small size like 
Sun 411 case) that I've
    identified as DSSI terminator., What is the 50 pin centronics style 
connector above that ?
8. What is a DSV11-S good for ?
9. Not that I plan to, but how do you make use of the async cards (they 
have 50 pin centronics
    style connectors)
10. Anyone got any more of the 2 3.5" drive mounting assemblies ?
11. Anyone got any RF36 or higher density DSSI drives available ?
12. Can the DSSI drive 'bus' be converted to SCSI ?
13. What is the largest drive/partitions supported on 4000/200 (DSSI or 
otherwise) ?
14. Have I asked enough questions ?  (What have I forgotten to ask :-) ? )

How are the 4000/200 machines ?  (Other VAXen I have is VAXStation 2000 and
VAXStation 3100, neither of which is running (driveless))... I find the 
enclosure
design pretty cool... and for a large box, has nice design (visually)... 
(I know it is no
SGI... and that it is DEC beige.... but I like the design (doors, badge, 
etc)).

Any drop in cpu/memory upgrades that are worthwhile (in the free to 
cheap territory
of course :-) ).

Thanks in advance for any cool info/pointers/etc...

-- Curt