Hi,
Extremely slow backup performance has been observed during Remote backup jobs involving networks using 100 Megabit cards. More often than not, other problems such as lost connections may also be present during the backup jobs.
If the 100 Megabit cards are replaced with 10 Megabit cards, the backup speed has been observed to increase to normal levels.
To troubleshoot this problem, check the Backup Servers and Remote Servers for the following:
* Insure that all 100 Megabit cards, hubs and routers are set for either Full or Half duplex operation. Mixing Half and Full duplex operations on the same network can cause a variety of problems to occur. If it does not function well at full duplex, try setting everything to half duplex.
* Verify that the BEREMOTE.NLM is running on the Remote Servers. This can be done by typing MODULES at the server console and look for the NLM. The BESTART.NCF file on the server should contain the LOAD BEREMOTE.NLM line for version 5.01x through 7.01b. In the case of Version 7.11x or above, the -tr switch should be present on the 2nd line of the BESTART.NCF file ( Example: LOAD BKUPEXEC.NLM -tr ). BEREMOTE.NLM is an Agent Accelerator included with the Backup Exec product.
* Verify that the current version of the Network Card driver NLM's are running on the file server. Old drivers can cause multiple problems with speed and connection reliability as well as data integrity problems.
* Verify that the Network Cards have the most current Firmware installed on them. Again, speed, reliability and data integrity problems can be affected by the Firmware.
* In extreme cases, it may be necessary to replace the Network cards with a newer revision of the cards. Check with the card manufacturer to see if this is the case for the existing cards in the network.
In a few cases, it has been observed that extremely slow backups have occurred while backup server was doing a backup of its own local volumes.
In these cases, unbinding and unloading the NLM's for the network card has allowed the backup of the local hard drive to proceed at normal speed.
Ultimately, replacing the Network card has resolved the problem.
Patches can be located on the Novell support web site.
Hope this will help you.
Thanks.
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