Our Netware Servers are 6 cluster nodes: Netware 6.5 SP 8, Cluster 1.8.
We are running Symantec Antivirus Corporate Edition 10.1.9 and Tivoli Storage Manager

Servers are suffering from memory fragmentaton. We have to reboot them periodically. They show errors like
"Cache memory allocator out of available memory" and
"Short term memory allocator is out of memory".
The opinion of Symantec Support is that SAV is not the cause of memory fragmentation.
We already limited TSAFS in the amount of cache it requests (Load TSAFS /CacheMemoryThreshold=1). We also set a hard limit on the amount of RAM that DS.NLM uses.

What can be the cause for the problem?
Attached you will find the segstats.txt of one of the servers.

Thank you for all hints!