I am trying to resolve AIX system boot issues from the cDOT system. Here's the issue:
I can boot the AIX from the old IBM N-Series storage using N-Series Host Utilities Kit (HUK). Our goal is to migrate this server from the N-Series to the new cDOT system so the server is booting from the new cDOT. The AIX server doesn't see the boot device after we have uninstalled the N-Series HUK and the new HUK Ver.6 for AIX is installed. We went through various test scenarios as below:
Two IBM AIX Test Enviroments.
Test Environment #1:
Uninstall IBM N-Series HUK in favor of NetApp 6.0 HUK
AIX 6.1 TL8 SP3
IBM N-Series HUK Installed.
Using NPIV not vSCSI via VIO Server
SAN Boot LUN Data has already been migrated from N-Series to the following:
SAN Boot LUN on NetApp ClusteredONTAP 8.2 (8040/8020 HA cluster)
Test #1: Uninstall of IBM N-Series HUK & Install of NetApp HUK:
1 - Single Path created for Boot LUN from LPAR to CDOT array using assigned portset to igroup. (Only one HBA adaptor enabled on LPAR)
2 - Boot off single path LUN
3 - Chdev –p hdisk# -a algorithm=fail_over –a reserve_policy=single-path
4 - Bootlist –m normal hdisk# (ensure boot LUN is in bootlist)