virtualization

During datastore creation in vSphere using the Nimble vCenter plugin, I get the following error: A general system error occurred: esxi1: CHAP setting not compatible. hba=vmhba33 In vSphere Client I went to my ESXi host then Configuration, Storage Adapters, iSCSI Software Adapter.  Taking a look at vmhba33 Properties then CHAP… I see that there was…

Read More A general system error occurred: esxi1: CHAP setting not compatible.

Here’s an ESXi console script to loop through each Nimble eui.* adapter and set IOPS=0 and BYTES=0 (per Nimble recommendations). for x in `esxcli storage nmp device list | awk ‘/Nimble iSCSI Disk/{print $7}’ | sed -e ‘s/(//’ -e ‘s/)//’`; do echo $x esxcli storage nmp psp roundrobin deviceconfig set -d $x -t bytes -B…

Read More Performance tuning iSCSI Round Robin policies in ESXi for Nimble storage

In order to work around the issue processor power management has to be disabled in system UEFI and vSphere Client. To change power policies using server UEFI settings: Turn on the server. Note: If necessary, connect a keyboard, monitor, and mouse to the console breakout cable and connect the console breakout cable to the compute node.…

Read More IBM System X3850 Disable Processor Power Management

I’ve spent some time exploring and studying the use and configuration of VMware Flash Read Cache (vFRC) and its benefits.  These are my notes. Useful Resources VMware Flash Read Cache 1.0 FAQ vSphere 5.5 Flash Read Cache Documentation On a guest virtual machine, vFRC is configured in Disk configuration area.  The virtual machine needs to…

Read More My Notes and Benchmarks on VMware Flash Read Cache