SCSI CAM Error

[godhelp]

Managers,

THOUGH IT IS NOT RELATED TO SOLARIS, JUST THROW SOME TIPS FOR MY TRU64 UNIX PROBLEM.


We have 3 member mc cluster, suddently all 3 went down.


I have tried to reconfigure the servers and setup looks like below.


We have 3 * DS20E having NCR53C895 UW SCSI controller which is
connected to Digital 2x68-pin VHDCI Personality Controller Module on
DS-BA356-KF Storage box connected thru BN21W-OB cable.


we used three Y cable to form three member cluster; like


Y |------- DS-BAS356-KF storage box
server 1. ----|
|-------
| [bn21W-ob]
Y |-------
Server 2. ----|
|-------
|
Y |-------
Server 3. ----|
|-------*


Unfotunately we are getting following error whiel executing test
bootstrap command or tried to install the OS on disk. But my servers
are identified the DISKS [ RZ1DD-VW] which are all connected on
BA356-KF box.


SCSI 0: SCSI bus was reset
CAM LOGGER: SCSI evert pack
CAM LOGGER: SCSI bus 0
itpsa SCSI HBA
SCSI bus was reset


SCSI0: DIP intr, istat=0*9 dstat=0*81
CAM LOGGER: SCSI evert pack
CAM LOGGER: SCSI bus 0
itpsa SCSI HBA
DIP intr, istat=0*9 dstat=0*81


SCSI: illegal instruction - DSP ******
SCSI0: can't find request for BA *****[proc SCSI Errors]
CAM LOGGER: SCSI evert pack
CAM LOGGER: SCSI bus 0
itpsa SCSI HBA
can't find request for BA *****[proc SCSI Errors]


Let me know the reason beyond this and possible post some tips for
resolving the problem.


Thanks