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Start by posting ideas and requests to this portal to enhance a Power product or service. Take a look at ideas others have posted and upvote them if they matter to you,
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Specific link you will want to bookmark for future use
IBM Unified Ideas Portal-https://ideas.ibm.com/- Use this site to create or search for existing Ideas across all IBM products that are outside of Power, and track all of your personal interactions with all Ideas.
DST identification of disk controller cache failures without IBM i present
IBM technical support unable to diagnose failed disk controller cache failure on a brand new machine. Advised that support unable to diagnose without IBM i loaded and operating, during a risc-rick migration at the same OS level (V7.3) from POWER 7 to POWER 9 system. Moving from a system using HDDs to system that also uses HDDs. Could not determine problem cause and get IBM C.E. dispatched until RESTORE menu option 21 completed; this took 5 calendar days running non-stop. Once IBM i loaded, immediately identified hardware problem and hardware case A1CTGPV opened; C.E. dispatched with replacement hardware that ultimately resolve problem. We never did find a error report in DST "service action log" for this. The only clue way IBM i reporting the RAID set was "degraded". We looked for problem indications in DST/SST "work with disk" menus, no indication of "degraded" performance is show on "display disk configuraion" or "display disk parity" menu sets.
After loading SLIC, and in the midst of a VERY slow loading process, support was unable to guide us through checking for disk cache failure. We did not find, nor could hardware or software support provide a path in DST menus to determine if disk controller cache failure caused our symptoms. We were advised to allow restore to complete. IBM technicians stated they have a known problem determining issues with disk Cache in this type of migration until IBM i options have been loaded and OS is has ability to run "must gather" tools, or even look at WRKDSKSTS.
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