The scenario:Database server with 10 vCPU and 192 GB ram Physical host with 2 sockets of 10 cores, 265GB RAM total Customer was reporting poor performance of their database server, an initial browse of the configuration seemed to show it had been configured well. Multiple paravirtual scsi adapters, enough CPU/RAM for the workload, storage performing … Continue reading Poor performance of highly specced VMs – vNUMA!
Interesting problem here. Customer was adding some new hosts to an existing cluster, but got this error: Move host into cluster The host's CPU hardware should support the cluster's current Enhanced vMotion Compatibility mode, but some of the necessary CPU features are missing from the host. Check the host's BIOS configuration to ensure that no … Continue reading CPU incompatible adding host to cluster after patching for Spectre/Meltdown
For months now many vSphere 6.0 users have had no hardware info populated from their ESXi 6.0 hosts The good news now is this has a patch. ESXi-6.0.0-20180704001-standard contains the following little nugget of goodness in the patch notes: System identification information consists of asset tags, service tags, and OEM strings. In earlier releases, this information comes … Continue reading ESXi 6.0 hosts ‘No host data available’
Quick reminder that vSphere 5.5 reaches end-of-life this month - September 19th. That old workhorse of a platform that many customers are still running for a plethora of reasons is finally reaching end of life. That means no more updates, and no more support from VMware. You will be limited to the self help portal … Continue reading PSA: vSphere 5.5 end of life imminent!
A customers environment was losing access to VMFS datastores on a regular basis. Events in the log showed this: Lost access to volume xxx due to connectivity issues. Recovery attempt is in progress and outcome will be reported shortly. Further info can be gleaned by checking the hostd log. SSH onto the host and use … Continue reading ESXi Hosts Losing Connectivity to VMFS Datastores