HP OpenVMS Systems

ask the wizard
Content starts here

telnet pauses?

» close window

The Question is:

Recently I upgraded our Alpha 4000 (OpenVMS 7.1-H2) hard drives from 4.3GB
each to 9.1GB each.  It was a simple swap, basically one for one.  I made
backup images of our three defined drives: dra0 (RAID 5 - 3 drives), dra1
(RAID 1 - 2 drives [system disk]
), dra2 (RAID 5 - 4 drives).  Once the new drives were initialized, I
restored the images to each appropriate drive.  The system was then booted
and operations appeared normal.  All applications are running and users
could execute whatever programs they w
ished.  However, users using DCL via a telnet session now experience delays
while typing commands.  For example, if you start to type SHOW SYS, you may
get SHO displayed, then a pause of 1 or 2 seconds occurs, then the remainder
W SYS is displayed.  It is
 more agravating than anything.  Application performance appears fine, if
not improved.  However, the sluggish users responsiveness gives the
impression that the system is slower now with the new drives.  I made no
other hardware changes or VMS changes wh
en the images were restored.  Is there something I missed or should have

The Answer is :

  The particular footprint initially appears to be one of a constrained
  system resource or constrained process quota, or a constraint or a
  problem within the particular IP stack in use.  Obvious approaches
  would involve AUTOGEN with FEEDBACK for the system settings, checking
  for appropriate and adequate process quota settings, and checking for
  ECOs or subsequent releases for OpenVMS and the TCP/IP stack.
  Please move to OpenVMS Alpha V7.1-2 or V7.2-1 (or later), and to TCP/IP
  Services V5.0A (or later) -- V7.1-1H2 is an OpenVMS Limited Hardware
  Release (LHR).  (Upgrades from an LHR to a subsequent (non-LHR) OpenVMS
  release -- with support for the particular hardware or particular system
  configuration -- are generally recommended and generally encouraged.)
  Also confirm that the SCSI drive firmware and the SCSI configuration and
  termination are all correct.
  Please contact the Compaq Customer Support Center for assistance.

answer written or last revised on ( 17-JAN-2000 )

» close window