> > If You could be so kind and validate above and give me an answer is my > disk are real problems or not? And give me a tip what should I do with > above cluster? Maybe I have misconfiguration? > > > You disks are effectively idle. What consistency level are you using for reads and writes?
Actually, 'await' is sort of weirdly high for idle SSDs. Check your interrupt mappings (cat /proc/interrupts) and make sure the interrupts are not being stacked on a single CPU.
