| First of all, scan this conference for topics on SCSI, the Adaptec controller
used in the Jensen is a *very* skittish device. It is known to fail on
what should be valid configurations - leading to data corruption. There are
very strong warnings in here about having both internal and external disks
connected to the SCSI.
The simple answer (and the answer for customers) should be *NO, Don't connect
an external box if there are internal disks*.
Therefore, you could:
- remove all internal SCSI devices - including CDROM
- verify correct resistor pack installation on the Adaptec
- then
o use BN31V-01 to connect to BA364
o install CDROM into top CDROM slot of BA364
(Note that the BA364 comes with screws and cable for doing
this - but the cable is rather short and stiff. If the SCSI
connector on the Jensen's original CDROM is offset
horizontally too much from the connector on the BA364 you
might have to get a longer cable with more flex. Or, you
can include a newer, faster CDROM that is guaranteed to
fit. (I've put RZ25, TLZ09, etc into that top slot...))
o install up to 4 more disks in the BA364
or
o use BN21H-02 (50-50 HD) to connect to BA356 w/ 8-bit
personality module (BA35X-MG), or BN21N-02 (68RA-50 HD)
to connect to BA356 w/ 16-bit personality
o install RRD45-VA 4X CDROM in BA356 (note that this takes
three slots in the BA356)
o install up to 4 more disks in the BA356
So, you're not going to be able to more than 4 disks + CDROM on the beast,
which means that the much cheaper BA364 is probably the way to go...
-cw
ps: One would have to verify that the Jensen firmware can handle the 4X
CDROM - it's possible that it cannot use the newer CD
pps: Having said all the dire warnings, I'm running a Jensen here with
BA364: [ RZ25 ] (in CDROM slot)
< RZ26L-VA >
< RZ29B-VW >
< RZ28D-VW >
< RZ29B-VW >
-> BN31V-01
Internal: < CDROM >
< RZ26 >
It's working fine - at least I haven't yet noticed any undetected
data corruptions! If it does fail, I'll only have myself to blame
for deliberately ignoring the fact that it is dangerous to put
internal and external disks on the same SCSI.
ppps: Notes in this conference on the scsi:
******************************
CRANS$:<NOTES_LISTINGS>JENSEN.NOTES;128
caly70.ayo.dec.com:: 27-NOV-1996 586.1 Adaptec == SCSI
AYJEN1::ARMSTRONG 3-MAY-1996 553.1 Bad SCSI
553 COL01::VSEMUSCHIN 30-APR-1996 1 DEC 2000 AXP, Adaptec 1740 SCSI
and weir .CFG ...
550 FORAT::JLS 12-APR-1996 0 ADAPTEC AHA1742A & RZ28M-VA
(BA353) HELP !!
caly70.ayo.dec.com:: 14-FEB-1996 533.2 No extra SCSI information
provided
CERN::HOBBS 14-FEB-1996 533.1 please look - list of Adaptec
1742/1740 SCSI questions
533 TALLIS::SCHULER 13-FEB-1996 2 Dual Adaptec 1742s - SCSI config
question
532 RTP4ME::FLACK 9-FEB-1996 2 How to upgrade Adaptec - FCO is
NLA
528 QBUS::E_BURKHALTER 30-JAN-1996 1 Adaptec termination?
caly70.ayo.dec.com:: 30-JAN-1996 527.3 SCSI config again...
caly70.ayo.dec.com:: 19-JAN-1996 524.3 SCSI sen~or?
524 CSC32::R_ROBERTSON 12-JAN-1996 3 Slow SCSI? How to set to.
PTOSS1::BROWN_M 19-JAN-1996 522.7 The sordid SCSI solution....
PTOSS1::BROWN_M 5-JAN-1996 522.2 SCSI Configuration Information
caly70.ayo.dec.com:: 5-JAN-1996 522.1 SCSI or INSTALLATION?
caly70.ayo.dec.com:: 15-DEC-1995 515.1 Check the SCSI
caly70.ayo.dec.com:: 22-NOV-1995 508.1 Looks like SCSI errors
507 manaxp::tr 20-NOV-1995 2 problem with second adaptec 1742
DECWET::JSCHNEID 10-OCT-1995 491.10 SCSI cables
LJSRV1::STRAUB 21-SEP-1995 491.7 no SCSI conflicts
DECWET::JSCHNEID 19-SEP-1995 491.6 SCSI ID conflicts?
CALY70::Gordon 3-AUG-1995 468.1 Scsi wise it's the same as a
TLZ07
450 UTOPIE::OETTL 9-JUN-1995 1 jensen/Adaptec/TZ877 problems
CALY70::Gordon 25-MAY-1995 440.6 Long live the adaptec 1742
440 NUTS2U::LITTLE 18-MAY-1995 6 What SCSI controller supported
by NT and OSF?
CALY70::Gordon 16-MAY-1995 439.1 SCSI bus Rules... OK!
432 HOBBE::DAHLBERG 26-APR-1995 5 URGENT How to config two
ADAPtec in an JENZEN
CALY70::Gordon 18-APR-1995 429.1 Fast SCSI bus...
429 ROMVLC::SALVATI 18-APR-1995 2 SCSI i/o throughput
373 56953::DORIAN 25-JAN-1995 1 scsi firmware updates for OSF
3.0b?
363 QCAV01::JAMBU 16-JAN-1995 1 Fast SCSI II enabling how ??
MKOTS1::WALKER 23-MAR-1995 351.6 You can no longer get the G.2
PROMs from Adaptec
351 SMD72J::WOOD 3-JAN-1995 6 Adaptec aha1742 MCODE I
315 PENSKE::SDATZMAN 23-NOV-1994 10 Can't see SCSI devices with SHO
DEV
BASEX::SHEPPARD 30-NOV-1994 311.6 What is the current Adaptec
EPROM version
AYJEN4::ARMSTRONG 27-OCT-1994 297.1 SCSI Termination issue
289 TPSYS::HAUDEL 19-OCT-1994 3 rev h for scsi?
AOSG::FTW 10-OCT-1994 281.6 One of the Great Myths of SCSI
CSC32::B_HIBBERT 26-SEP-1994 262.5 Looks like a hung SCSI bus
AYJEN1::ARMSTRONG 14-SEP-1994 257.4 SCSI bus lengths....
AYJEN1::ARMSTRONG 13-SEP-1994 257.2 SCSI adaptor
COPCLU::PETERC 1-SEP-1994 251.2 set scsi_c 7
245 JRSVM::BAKER 26-AUG-1994 1 SCSI Firmware Version "H"?
230 CERN::HOBBS 9-AUG-1994 2 SZ12 expansion box must be
powered on for SCSI termination?
221 SMD72J::WOOD 27-JUL-1994 2 G.3 ROM upgrade for adaptec?
FIEVEL::FILGATE 1-AUG-1994 210.5 SCSI busses must be very
carefully configured
210 FAILTE::BURNETTD 14-JUL-1994 8 RZ28B and Adaptec 1742 probs
UFHIS::JPFISTER 2-MAR-1995 190.6 Adaptec 1742 -> 2742
19748::FTW 1-JUL-1994 190.2 ...and OSF supports only the
Adaptec 174X as well
190 VAXRIO::CUPOLILLO 1-JUL-1994 7 SCSI controller support
SIOG::R_TAYLOR 7-JUL-1994 189.4 SCSI is OK
185 RT95::TEDESCO 27-JUN-1994 3 SECOND SCSI CONTROLLER AGAIN?
caly80::Gordon 28-JUN-1994 184.2 Adaptec IRQ advice...
184 KERNEL::SMITHS 27-JUN-1994 5 2nd scsi card problems.
169 KERNEL::SMITHS 13-JUN-1994 1 Adaptec aha1742 and ecu
questions.
caly80::Gordon 13-JUN-1994 168.1 Adaptec ROM not System ROM!
167 PELKEY::pelkey 13-JUN-1994 14 Help with Adaptech ROM update
164 DRAC::JLSOLE 10-JUN-1994 2 2ND SCSI controller feedabck
STAR::APGAR 8-JUN-1994 161.1 scsi cable length issue
EVMS::JSAUNDERS 31-MAY-1994 145.1 Probable SCSI Termination
Problem
19748::FTW 3-AUG-1994 138.12 zap the two scsi boards
132 COPCLU::JORN 17-MAY-1994 10 Configuration problem - SCSI
adapters...
130 MYTHS::Zgraggen 16-MAY-1994 2 4 SCSI adapters in a jensen
120 KAOFS::S_GAGNON 9-MAY-1994 3 VMS 1.5 1h1: TIPS WHEN ADDING
SECOND SCSI CTRL IN JENSEN
113 MIMS::FINKELSTEIN 28-APR-1994 2 How to get G.2 ROM upgrade for
Adaptec
101 BACHUS::ROETS 15-APR-1994 1 osf T3.0-1 and scsi firmware
94 EVMS::JSAUNDERS 9-APR-1994 3 Documentation on SCSI
Configuration?
AYJEN1::ARMSTRONG 7-APR-1994 88.3 Adaptec 2740 config file
79 RT95::TEDESCO 25-MAR-1994 3 Adaptec 1542 supported?
AYJEN1::ARMSTRONG 21-MAR-1994 73.1 SCSI IRQ conflict
73 myths.geo.dec.com::Z 21-MAR-1994 3 SCSI self-test failed, error
codes?
63 GEM::BROWNLIE 10-MAR-1994 3 Loosing 2nd SCSI adapter on boot
SMOGGY::EMERY 6-MAY-1995 46.14 Adaptec 2740 and DEC 2000
model 300 concerns
VIVIAN::GOODWIN 15-APR-1994 46.11 Adaptec 1740/2740
GIDDAY::HIRSHMAN 15-FEB-1994 45.3 SCSI adapter support?
SQM::HARQUAIL 14-FEB-1994 45.1 SCSI terminators
GIDDAY::HIRSHMAN 22-FEB-1994 42.3 SCSI adapter installation wrong
MICKIE::kimpton 17-MAR-1994 40.13 Problem with external SCSI port
AYJEN1::ARMSTRONG 13-APR-1994 36.1 3 SCSI card configuration
problems
AYJEN1::GORDON 25-FEB-1994 22.4 SCSI Adapters Listed in
Microsoft's HCL.
AYJEN1::GORDON 25-FEB-1994 22.3 Qualified SCSI Adapter Cards
for Windows NT 25/2/94
AYJEN1::ARMSTRONG 22-JUL-1994 13.5 SCSI Bus recommendations
SQM::CLOUTER 16-FEB-1994 13.2 SCSI/EISA firmware revision G.2?
13 AYJEN1::ARMSTRONG 10-FEB-1994 5 SCSI Tips
|
| > this system with these external boxes ?? (cables ??)
All the information was given in .1.
Perhaps you don't realize that fast or fast/wide devices will work fine
with slow or fast/narrow controllers. The devices default to slow/narrow
mode unless the controller and device negotiate fast or fast/wide transfer.
All you have to do is make sure that the "wide" signal wires are properly
handled. (N.B. many older -VA disks do *not* do the right thing with
the extra wires - plugging those drives into a wide shelf will make the
wide drives disappear, or maybe hang the bus.)
The Jensen SCSI is a fast controller with a 50 pin HD connector (50HD). It
will ask each individual device if the device supports fast mode. It will
never ask about wide mode, since the controller does not do wide.
The BA364 is fast wide with a 68 pin HD connector (68HD).
The one end of the BN31V-01 is 50HD, plug that into the back of the Jensen.
The other end of the BN31V-01 is 68HD, plug that end into the BA364. The
cable does the right things with the 18 extra wires.
The BA356 has an I/O adaptor module between the backplane and the cable.
Two varieties exist - 8-bit and 16-bit (which have 50HD or
68RA (68HD right-angle) connectors, respecively).
If you get the 8-bit, the BN21H-02 (50HD-50HD) cable is the right one.
If you get the 16-bit, use the BN21N-02 (68RA-50HD) cable (which also does
the right things with the 18 extra wires).
-cw
BA356-KD 7Dev Ped pwr no I/O Module
Deskside Expansion Unit o BN27S-03 power cord
o High availability o Must order either an 8-bit
o Holds up to seven devices or a 16-bit personality
o 16-bit SCSI-2 module for specific
o BA356-SC shelf configuration needs
o BA35X-HF 150-W power supply (BA35X-MG/MH)
o BA35X-VA pedestal kit
BA356-KC Exp Unit, 7 dev, 16-bit SCSI
Deskside Expansion Unit - BA356-SB shelf
o High availability - BA35X-HF 150-W power
o Seven-device supply
o 16-bit - BA35X-VA pedestal kit
o SCSI-2 - BN27S-03 power cord
o Includes: - BA35X-MH 16-bit I/O module
1 BA35X-MG 8-BIT I/O MODULE FOR BA356 N/A
2 BA35X-MH I/O Module, 16-bits for BA356 N/A
|