Toasters,
It appears the following documents conflict with one another when it comes to recommendations for the value of Net.TcpipHeapMax in ESXi.
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How to configure VMware vSphere 5.x for Data ONTAP 7.3 and 8.x
Net.TcpipHeapMax
For vSphere 5.0/5.1 set 128
For vSphere 5.5 set 512
TR3749 - NetApp Storage Best Practices for VMWare vSphere
"While the NetApp best practice remains to set Net.TcpipHeapMax at the maximum value of 128MB, tests have shown ESXi 5 to be less sensitive to depletion of TCP/IP heap memory."
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It seems that TR3749 may be out of date (last update 2011) as it doesnt distinguish between vSphere 5.0/5.1 and 5.5. To my knowledge, the 128MB maximum TCP/IP heap size is applicable to vsphere 5.0 and 5.1. I believe 5.5 increases this maximum to 512MB.
I assume the current recommendation for vSphere 5.5 against a filer running ONTAP 8.1.4 7-Mode is 512MB. Can somebody confirm? Is there a best practices doc like TR3749 for vSphere 5.5 in a 7-mode environment?
Thanks,
Phil