Tag Archives: Redundancy

IBM DS3400 Redundant Controllers and Bad Batteries, eNet Cable Fail

Recently my IBM DS3400 SAN gave an alert that the controller batteries had to be changed out. So after ordering some batteries, receiving them, it was time to perform a battery exchange.   The steps are quite straight forward but still require a bit of forethought. I run  IBM System Storage Manager 10 from within a VM running Windows 2008 R2, it is actually my VMware vCenter Server. In order, for me to exchange the batteries the IBM System Storage Manager 10 must be able to talk to the controllers either over the network or over the fibre connection. Since this is a VM, all I can do is control the SAN over the network at this time. Continue reading IBM DS3400 Redundant Controllers and Bad Batteries, eNet Cable Fail

VMotion – Redundant Power Supplies Aid in Migration

Virtualization is all about redundancy. Redundant network switches, frabric switches, power supplies, and of course redundant hosts.  Recently, I had to reorganize my entire data center. I was removing equipment and moving equipment. I was trying to reduce everything to either a single rack or a pair of half height racks to save on space, power, and  cooling.

Continue reading VMotion – Redundant Power Supplies Aid in Migration