Frank Schwede, LSY wrote:
Im sorry, but: What is going on here?
I was sure, someone would give a statement about the real current state of PAV on Escon DASDs.
Maybe others were puzzled like myself. Why the &$* would you pay for PAV license on the ESS and not invest in FICON? When all response times are cut so drastically, the trouble of waiting in queue is less dramatic.
If you need to decide between small disks and large ones with PAV, can think of scenario's where the PAV solution is better. With such large filesystems you already took the cost of LVM anyway. The benefit of striping does depend a lot on application behaviour, and it is easy to make it counter productive. I am having a hard time trying to come up with proper benchmarks to compare scenario's. This is complicated and there are so many variables, each answer that I find gives me two more questions.
Rob
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