So we’re having an issue with our Nutanix cluster and wanted to ask if anyone else has seen this or can duplicate it on their cluster.
We have a 3 node cluster on Dell XC430 servers. 2 480SSD and 2 4 TB SATA drives / node. They’re networked using 10GB SFP+ cables to 4 Dell switches that are stacked. Running ESXi 6.5. 1 big container. Jumbo frames are not being used.
Issue: 1 VM with 2 drives: C: and When we try to copy a large file from C to D or vice versa, we’re getting anywhere between 0 – 40-50 MB/s performance. In addition, the disk latency goes WAY up to around 200-300.
This does NOT seem normal to me. Can anyone explain this or help please??
Nutanix and Dell engineers seem perplexed. No one can tell us if this is “normal” but I can get better performance copying to a USB 3.0 device than I can from drive to drive on this!