The procedure to configure the network ports on the FAStT controller is poorly described in the FAStT Storage Manager Installation and Support Guide, but we worked this out. Some FastT’s have a slightly different process to setup the network, but they’re all very similar.
FastT Hot Spares
The FastT has a global pool of hot spare disks, hot spares do not need to be in the same drawer as the failing disk. It will first look for any hot spares defined in the same drawer as the failed drive, then it looks at the last hot spares defined.
FastT Cache Block Size Tuning
The cache block size is the size of each memory block used for caching, the only two options are 4k and 16k. The cache block size should be set to the size of the average work unit, or less. Never exceed the size of the average work unit. For instance, if you are using Oracle with an 8k segment size, you should use 4k. Using 16k will result in each cache block only bing half utilized. Using 4k will use two blocks, but they will both be filled. This can be changed under Storage Subsystem -> Change -> Cache Settings.
Brocade Fibre Switche NTP Setup
It’s recommended to keep everything in the enterprise on the same time to make troubleshooting easier if nothing else. Brocade Fibre Channel Switches can use an NTP server to keep time. The principle switch polls the NTP server and the updates are propagated to the entire fabric.
Script to create home dirs
When LDAP is enabled, any user in the tree can login (with some conditions), but the users home directory isn’t built on the fly. The way to fix this is remotely mounted home directories, but that’s not always practical. If there is no local home directory, and you don’t mount the directory remotely, the user will be put into the guest home directory at login. This script will scan the LDAP tree, check to see if the user is denied logins on this host, create the home directory, and copy the .profile from /etc/skel/.
RFC 2307aix schema for OpenLDAP
IBM recommends people use Tivoli Directory Server for LDAP authentication with AIX. Which is free for AIX use and contains all the proprietary schemas necessary. But, if you already have OpenLDAP, IBM uses a proprietary schema that makes full integration difficult. Or if you want to use the LDAP server for more than just AIX authentication, you have to buy the full product.
You can authenticate in RFC 2307 mode, but you miss most of the AIX specific user attributes. This schema works with RFC 2307AIX mode in AIX. Some modifications had to be made, mainly boolean attributes don’t work well between OpenLDAP and AIX. I don’t know if AIX or OpenLdap is more RFC compliant, but it’s broken. So, those are converted to text attributes, and seem to work well.
This schema is provided as-is, if it breaks free and destroys your world, it’s not my fault. If you fix anything broken, please send me the changes.
Restart all printing related servers
In the event that there appears to be printing problems, Cerner recommends that the following servers be cycled:
Stop all comclients
A quicky to stop all the comclients at once, in scpview do:
find -descrip op_* -stopSet all comclients to 1 instances
When your ready to set the comclients back to one instance, in scpview do:
find -descrip op_* -apply -inst 1Set all comclients to 0 instances
Sometimes you need to set all the comclients to 0 instances, so they won’t run when the domain comes up (usually after a down-time).