ITEM: BY4022L

Slow performance wit remote backups using sysback

Question:

Env:
  AIX 4.1.5
  RISC J30 and 43p-240
  sysback 4.1.1.0
  

Problem:
  Anything that is backed up remotely using sysback is running
  10 times slower, than when the customer was using sysback 3.3.3.16.

  Example:
  Version 3.3.3.16  (without any kind of software compression)
  ------------------------------------------------------------
  Using the sysback command
  Backup remotely to file:  500k/sec
  Backup remotely to tape:  240k/sec  (4mm 2gb 7006-001)

  Backup local to file:     500k/sec
  Backup remotely to tape:  300k/sec  (4mm 2gb 7006-001)


  Version 4.1.1  (without any kind of software compression)
  ---------------------------------------------------------
  Using the sysback command
  Backup remotely to file:  30k/sec
  Backup remotely to tape:  24k/sec  (4mm 2gb 7006-001)

  Backup local to file:     500k/sec
  Backup remotely to tape:  300k/sec  (4mm 2gb 7006-001)

So what changes have been made to the sbclient, sbserver or 
sbwrite that would cause it to run this much slower remotely?

CLOSED by tj on 04/22/97 03:57:
This is SEV 1 fix level \#1. This problem affects all remote 
backups and restores regardless of the media device. The 
problem was created about 6 weeks ago when the ability to 
change network settings was added prior to the final code 
given to the support group for testing.

This fix also includes a SMIT fix for a problem, in which a 
SMIT error occurs ANY time a verify or restore is atempted 
from a local or remote disk file!

Fixed with sysback 4.1.1.1 



Support Line: Slow performance wit remote backups using sysback ITEM: BY4022L

Dated: April 1997 Category: N/A

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