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mhm, I honestly never did the check hard disk stuff on a vm. Maybe I am looking in the wrong direction but could it be that there is not enough memory for the workload of netscaler?

As it's talking about paging indeed , if disk and everything seems fine then maybe memory is having a problem, check the size as mentioned also if it's on an internal hypervisor move it to another host and see if that helps.

Cool will check to see how much memory it has tomorrow what's the default/recommended for a vpx with light to medium workload nowadays 4GB?

Consultants answer.... It depends. If your using load balancing, gateways, CS or whatever then you'll need more, if I remember rightly the vpx ova default is kinda slim and I always upped it, whatever you have now, just try adding in 2GB chunks. Check if that makes any difference. If you have a ha pair do you see the same issue on the other one?

IIRC there was a bsd level tweak i did on all my vpx's on vsphere that helped with disk corruption.. i was searching through my notes all day and couldn't find anything though. fwiw, i tend to redeploy -> reimport more often than not to get hw compatibility level raised