Author: Jackie Chen

Install HP Command View EVA in VMware Virtual Machine


There are two ways to allow HP command View EVA that’s installed in a virtual machine to manage the array: Virtualized SCSI mode and VMDirectPath mode. Virtualized SCSI mode – The Command View EVA instance can only view the active path to LUN 0 on a single controller. This mode is enabled by default when … Continue reading Install HP Command View EVA in VMware Virtual Machine →

VForum 2013


I attended vForum 2013 couple days ago. To me, here are the three major notable things: VMware vSphere 5.5: It introduces many new features and enhancements to extend the core capability of the vSphere platform. e.g. hardware version 10, vmdk size limit is up to 62TB, support Microsoft cluster on Windows 2012. More   VMware … Continue reading VForum 2013 →

TSM for Exchange 6.4: DAG Backup/Restore Best Practices


Database Availability Group backup best practices- To decrease the load on the production Exchange server, specify that the backups are taken from a healthy passive database copy. If no passive copy is available, the backup is made from the active copy of the database. To specify that backups are taken from a healthy passive database … Continue reading TSM for Exchange 6.4: DAG Backup/Restore Best Practices →

vShield EndPoint: Lost communication with ESX module


We bought two new blades recently. When my colleague tries to configure the vShield Endpoint on the two new hosts, he always get an error ‘Lost communication with ESX module’. I SSH into the host, and checked the syslog. It complains the certificate is not yet valid. And I noticed that the time is not … Continue reading vShield EndPoint: Lost communication with ESX module →

Bash Special Variables


To better understand the bash special variables, I wrote a script to help myself. #!/bin/bash #Usage of $#echo ------------------------------------------------------------echo -e You have entered $# arguments. #Usage of $*echo ------------------------------------------------------------export IFS='-'echo -e The arguments are: "$*" \(seperated by -\) #Usage of $@echo ------------------------------------------------------------n=1for arg in "$@"do        echo -e The $n argument is: "$arg"        let n+=1done #Usage … Continue reading Bash Special Variables →