A few weeks ago, one of my disks in my Synology drive showed s.m.a.r.t. errors. The error message told me that this disk is about to fail. After i replaced the disk, i asked myself what would happen if the Synology itself has a malfunction? Besides the backups i make, …
As i wrote in my other article, i´m busy with a weird problem. When i set a hard IOPS limit on one VM, all VMs in the same datastore experience high storage latency. How this looks like, you can see here: (Sorry, had to anonymize the VM names.) *The VM …
Some time ago i was confronted with a VM that cause a lot of I/O. I was told to analyze the cause of this and find ways to calm this VM down since it consumes all the performance of our storage. While analyzing the VM i saw the following characteristics: …