For sure all wincc connection are s7 fault tolerant, and the wincc tags are in named connection.
If I check "Communication" in CPU Diagnostic, then: Connection resources Maximum - 64, not used - 53. The CPU is S7417-4H.
Removing the AS interconnection won't be easy.
I forgot to say, that in redundat mode the speed of the cpu is not constance, i mean that sometimes it is a bit faster, sometimes slower.
In H Parameters there is "Test cycle time", I have 90 min here, does anybody knows what do going on during this test, and how long does it takes? Mayby during this test the CPU is running slower?
I have recalcualate the H Paramteres "Monitoring times", it was standard 8000, 3200, 800, 120, now it's 22300, 8920, 2230, 120, it helps a littel, but still redundant mode it slower.