Are there any tools, or options (from VSphere client) that I can try to find the memory and disk performance of an ESXi5 host and the VMs hosted on it ?
Are there any tools, or options (from VSphere client) that I can try to find the memory and disk performance of an ESXi5 host and the VMs hosted on it ?
Yes, you can use the performance monitoring graphs provided by the vSphere client.
At the host level and the individual VM level, there's a "Performance" tab that provides some insight into the Disk, Memory, CPU, Network and other system metrics as real-time graphs. Using vCenter centralized management will add historical metrics as well.