Let me just say that, yes, I know these are entry-level servers. both servers run controller: HP ProLiant b120i SmartArray.I don't know if this issue exists in other configurations but what I've seen so far it affects these configurations 88), I was able to get around 170MB/s write performance. 101 or 102 or so I believe) and just installed the old driver (version. When I uninstalled the new HPVSA driver (version. For example one of my HP MicroServer gen8 servers has 2x8TB WD RED disks in RAID-1, and gave me around 30MB/s performance at best. This is a situation I can reproduce on multiple servers with various disk configurations. All I do know is that when I replace it with an older driver, my server's disk performance is fine again. I have no idea why as I haven't dug into it in detail. Turns out that for some reason the HPVSA driver for ESXi has some issues. And totally unexpected, because with ESXi 5 and 5.5, it worked just fine, staying a steady 110MB/s all the way through. I'm on a gigabit network and copying files from my Windows computer to a Linux Samba instance, and it started out at 110MB/s, then tanked to 25MB/s after half a minute. Imagine getting only about 25 megabytes per second of write speed on it. For some reason the disk performance was suddenly just atrocious. It had always been working fine until I started using ESXi 6 and 6.5 on it. Even though this post is fairly dated, I will leave this post online just in case anyone still has an HP ProLiant M元10e or MicroServer Gen8 server with terrible disk performance.
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