restore crashes remote machine

[Craig A. Zook 283-4206]

I have several Suns (4/280, 4/470, 3/60, 3/280) that are equiped with
Exbyte 8mm tape drives.  I am running SunOS 4.1.1 on all of them.
Whenever I attempt to do a restore using a remote tape drive the remote
system crashes.  The command I use is:

restore if tm:/dev/rst1

This command worked fine under SunOS 4.1.  The dump to a remote tape
command still works.

The only indication I get is in the messages file.  Below are the key lines.

May 10 13:41:21 tm vmunix: st1:  tape synchronization lost
May 10 13:41:21 tm vmunix: st1:  file positioning error
May 10 13:41:21 tm vmunix: panic: psig action
May 10 13:41:21 tm vmunix: syncing file systems... [2] [2] done
May 10 13:41:21 tm vmunix: 00280 low-memory static kernel pages
May 10 13:41:21 tm vmunix: 00325 additional static and sysmap kernel pages
May 10 13:41:21 tm vmunix: 00000 dynamic kernel data pages
May 10 13:41:21 tm vmunix: 00102 additional user structure pages
May 10 13:41:21 tm vmunix: 00000 segmap kernel pages
May 10 13:41:21 tm vmunix: 00000 segvn kernel pages
May 10 13:41:21 tm vmunix: 00067 current user process pages
May 10 13:41:21 tm vmunix: 00073 user stack pages
May 10 13:41:21 tm vmunix: 00847 total pages (847 chunks)
May 10 13:41:21 tm vmunix:
May 10 13:41:21 tm vmunix: dumping to vp ff072114, offset 247850
May 10 13:41:21 tm vmunix: SunOS Release 4.1.1 (TM_TOPS) #1: Sat Feb 23
15:37:00
 CST 1991


Can anyone help me?  Thanks in advance.

--
Craig Zook   -   zook at sweetpea.jsc.nasa.gov
Systems Engineeering and Administration
McDonnell Douglas Space Systems Corp. - Engineering Services Division
(713) 283-4206