We just setup a 3 node cluster to pilot vSAN for an upcoming project. We are seeing disk latency spike to 70ms routinely with no real io load on the box and we see it spike to 300ms when we place an io load of about 500 iops.
We are using 3 Dell R720s each has 7 x 280GB HDD and 1 x 179 GB SSD. We are using dedicated 10Gbs network cards connected to Cisco Nexxus switches for the vSAN connectivity.
Anyone else ran into latency issue / found a solution?
