IBM have created a self-service portal  for its customers to allow them to request their own Elastic Capacity on Demand codes for their registered systems. In my time using the new website, the codes have been generated and sent to me via email on average between 30 & 45 minutes. This significantly reduces not only the time taken to get new codes posted to the POD  website, but also eliminates the process of having to reach out to your IBM representative to request them from the COD office in the USA.
I’ve been doing many AIX server migrations lately. Some which involve taking a mksysb and restoring, others which involve presenting LUN’s from a SVC and then doing a migratepv. The latter can result in a large number of disks presented on the host, so I wrote a quick basic script which gives me the details that I need – hdisk name, size, vg, pvid and serial number.
Maybe someone out there will find it useful.
I’ve been working with a client who is going through the process of migrating from physical Power 5 servers to a virtualized Power 7 environment with PowerVM. Often referred to as P2V migrations around the IBM office 😛 Due to the I/O limitations in the P5 servers, our only method of migration was to take mksysb/savevg’s of the current servers, create NIM resources out of them, and then restore onto the P7 LPAR’s.
The Power 5 rootvg consisted of two internal disks in a LVM mirror, with the other volume groups backed by either internal disk, or locally attached storage. The Power 7 which we were migrating to had it’s storage provided by a shiny DS8800. Given the boot from SAN solution we had, we no longer required two disks to form the rootvg, as all the mirroring and redundancy was being handled by the SVC’s.
Cluster Systems Management (CSM) software provides a bunch of tools to manage from a single point of control your AIX environment. There are a number of commands available but the main four which I find quite useful are dsh, dping, dcp and dshbak. In this post, I’ll go over each command and some of its uses.
Very quick and basic shell script to show total/free/used memory on a host running AIX.
kristijan@AIX > ./meminfo
total memory = 1884 MB
free memory = 94 MB
used memory = 1790 MB