Arcserve 6.6 Ent. on Netware 4.11 Fails backup across netwk

[Doug555]

Facts:
Hardware: Compaq Prolian 3000, DLT 35/70, 90+gb of disk space on 2dh raid controller.
Servers are on different sub nets now, had them on same subs before. (same prob.) All on same ipx net. They go through Nortel switches and routers. All set for half duplex.

Software: Netware 4.11 with SP8A plus clib patch provided by Novell engineering group. Clib pt was supposed to fix problem, naturally, it did not help. Arcserve Enterprise 6.6 with latest sp from CA.

Problem: When attempting to backup similarly configured system across our network the backup time indicated by Arcserve hovers between 200 and 400 hours! Normally, this would indicated 2 to 3 hours. This problem comes and goes without warning. Every few months it crops up for a few weeks and then goes away. Reboots do not help. In addition, when backup takes off there is a console messages indicating a low priority thread condition. Novell has nothing helpful to say about it.

Have spoken with Novell and they cannot provide any solutions! Has anyone run into this before and what are possible solutions?
Would appreciate any constructive input.

 

[EvilOptic]

disable anti virus software during backups [sig][/sig]

 

[Doug555]

Thanks for the av suggestion, but it was the first thing I disabled.

Other things I've tried are:
new network cards, ca's document on improving performance (all options), rebooting, removing all nlms that are not needed, and starting with a fresh db in arcserve....all of these did not help. Moved servers to same switch( Nortel 450 with lates code) so no routing goes on between them, same result. (half and full duplex changes do not help.)

Still looking for help with this if anyone has ideas!

thank,

D [sig][/sig]

 

[stephani]

After discussing this with a colleague and having a similar prblm on cisco routers running nw4.11/nt network having lagging backup time on the usual 6 hour backup, got this solution. He was able to set the upgrade low thread priority on the server to "on" and change nic from automatic to 100 and at the same time changing the switch to ONLY USE 100 on the port the server was using. This last part was the key in getting the backup to run. The draw back is high utilization on the server. Our problem is due to a complaining scsi. Hope this helps. [sig][/sig]

 

[dan]

I had a similar problem of real slow backups. It turned out to be the SCSI cable. Who would have thought that would have been the culprit?
Dan

 

[rseeav]

We have the same problem once and awhile also, turns out it was do to not enough disk space on the Novell server to decompress the information before shooting it aross. The backups would read 400 to 900 hours and would eventually fail. I don't know if your using compression or not but it is something to look at if you are, you'll need to clean the Novell server up a bit. Then it seems to work fine.