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Windows Backup server not backing up

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Our backup server stops in the middle of backing up, sometimes:




OS: Winnt4.0 sp6


Retrospect 5.6


tape drive: Sony TSL-SA500C (scsi)




Occasionally, backups just stop, *with no warning*. Example: I have a


backup server script running evenings and weekends--nothing fancy. Here's


last weekend:




- 4/26/2002 8:04:38 PM: Copying $[*!20612,,14,+3]Drive C (C:)$[3] on




4/26/2002 8:04:38 PM: Connected to $[*!20780,,14,+3]WORKSTATION


4/26/2002 8:06:03 PM: Snapshot stored, 8,988 KB


4/26/2002 8:06:08 PM: Comparing $[*!20612,,14,+3]Drive C (C:)$[3] on




4/26/2002 8:06:24 PM: Execution completed successfully




Completed: 17 files, 312 KB


Performance: 2.4 MB/minute (1.6 copy, 6.0 compare)


Duration: 00:01:46 (00:01:30 idle/loading/preparing)




- 4/29/2002 8:18 AM: Backup Server stopped






Notice that nothing happened for DAYS. Not included is the rest of the


backup log. This LAN has some 30 clients, and this was the 6th one to


execute. There were many other machines that were due for a backup


(modified within 24 hours). Of course, this included all the information on


some servers.




This has happened many times. It is usually accompanied by the following


events: Retrospect freezes on shutdown, and a force quit and restart yields


a loss of tape device control. The server has to be restarted(!). Usually,


the log shows an insanely long time (like a day and a half for weekend


backups) for a particular backup until Monday rolls around and the script


stops because of the scheduling.




This is not good.




I have been dealing with this problem for months, since long before


telephone support (one of the selling points of the product) was switched to


pay-per-use. Techicians were helpful, friendly, and totally unable to fix


the problem. The best advice I got was to reinstall TCP/IP and SCSI drivers


on the server--which was no help.




Diligent Googling revealed the "secret preferences", that one poster


mentioned cleared his freezing if he turned on SCSI passthrough. I can only


wonder why nobody mentioned this to me. In any case, it didn't help. A


while afterwards, it happened again. Note that I cannot reproduce the


problem with a particular sequence of events.




-Rich Fletcher


DRS Technical Services, Inc.



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