Recent content by jstacey

My base vmm starting point. (reccomended during an IBM course) minfree = 120 x #of CPUs maxfree = 128 x #of CPUs minperm = 10% maxperm = 20% maxclient = 20% See if that improves performance Jeff

Why don't you just do a mkcd -d /dev/cd0 -L And burn your mksysb straight to DVD. If you don't have enough space in rootvg you can use the -V flag to specify a vg with enought space. This would allow you to easily restore a Machine/LPAR then mount a CIFS share to restore your other volume...

What I have done for a similar setup is my secondary machine (in a colocate facility across town) has the same ssh host keys as my main production server. /etc/ssh/ssh_host_rsa_key /etc/ssh/ssh_host_dsa_key We have never had to actually use the secondary in a DR situation but it worked well in...

I second the VMM tuning. You can try setting minfree to 120 x #of CPUs maxfree to 128 x #of CPUs minperm to 10% maxperm to 20% maxclient to 20% and see how that works in your enviroment.

If you want to do failover only you create an etherchannel and select the primary ethernet adapter only, then as select your secondary ethernet adapter as teh backup adapter. Configure the newley created etherchannel with your IP and test. To test just start a ping and pull the primary ethernet...

I would not add the drives without running the Disable Drive Migration script that comes with Storage Manager. Be careful as the script will reset both controllers. 1. Run disabledrivemigration.scr 2. Add your drives to the EXP's 3. Run enabledrivemigration.scr While you can do this live I...

I am running a pair of p510Qs as test servers with 3 LPARs each running Oracle plus a VIO server to share ethernet and fiber channel disk. My DBA's think that these are 6 physical servers. We have not seen I/O bottlenecks at all. When ordering these boxes my IBM sales rep recommended each LPAR...

While it is not exactly what you are looking for this redbook deals with intergrating AIX with W2K3 Active Directory using kerberos or kerberos with LDAP or just LDAP The kerberos parts should help point you in the right direction http://www.redbooks.ibm.com/abstracts/sg247165.html?Open

Before you use the recovery media preform a "Back up Critical Console Data" to DVD. This will save all your partition information, users, passwords, scheduled operations etc. Near the end of the recovery process you will be prompted to insert your backup or continue. If you do not have a...

lscfg -pv sys0 Will give you detailed information.

POWER5 systems store the current LPAR configuration in NVRAM. If you need to reload your HMC and do not have a backup of your "Critical Console Data" Your HMC will read your LPAR information from the POWER5 machine(s).

I do this monthly when we rebuild our dev LPARs. 1. Restore the mksysb to the new LPAR . 2. Reconfigure AIX to your needs. 2. Restore data/application volume groups 3. Make changes to your applications so they do not interfere with the production instances. 4. Start your applications. HTH Jeff

IBM support gave me this when one of our DBA's deleted hd6. The equivalent to doing an exportvg/importvg for rootvg PV=hdisk0 VG=rootvg cp /etc/objrepos/CuAt...

to create a bootable DVD /usr/sbin/mkcd -d /dev/cd0 -L -m /path/to/mksysb -V rootvg

This is a script I have in /usr/local/bin and allow a select few on our helpdesk to run it using sudo #!/bin/ksh ############################################################# # Created: 09/09/2004 # Arguments: username of user to remove...