H093980: MULTIPLE DDD DRIVES CAUSED BY INCORRECT CHANNEL MAPPING SYMPTOM: After one drive becomes DDD, one or more other drives will appear to be in a DDD drive state. PROBLEM ISOLATION AIDS: All of the following must be true for this TIP to apply: - The System is any model PC Server Type 8640, 8641, 8642, 8650, 8651, that supports and is configured with a Type II or a Type III Hot Swap backplane(s) AND / OR has a attached external enclosure Type 3518. - The System is configured one of the following Adapters / Controllers that supports the internal Hot-swap Bays and / or external enclosure(s) listed above: ServeRAID Adapter FRU p/n06H9334 Opt. p/n70G8489 ServeRAID Adapter FRU p/n76H6875 Opt. p/n70G8489 ServeRAID II Adapter FRU p/n76H3587 Opt. p/n76H3584 ServeRAID II Onboard Controller (Integrated) - System Diagnostics pass. - ServeRAID / ServeRAID II diagnostics pass. FIX: Note: all further references to "Bank" or "Banks" represents those internal to the System and / or those located in a System-connected External Enclosure. Ensure the Channel-bank mapping correctly reflects the SCSI cabling of the ServeRAID / ServerRAID II Adapter / Controller to the Hot-Swap backplane(s) as follows: 1- Examine and NOTE the actual SCSI cabling of the ServeRAID / ServeRAID II Adapter / Controller to the internal Hot-Swap backplane(s) internal to the System and / or in the System-connected External Enclosure. EXAMPLE: Ch1 on the ServeRAID goes to Bank E Ch2 on the ServeRAID goes to Bank D Ch3 on the ServeRAID goes to Bank C 2- Ensure the ServeRAID / ServeRAID II Adapter / Controller is configured to map the SCSI Channels (the same as the physical cabling) using the following procedure: - Boot the System to the "IBM ServeRAID and ServeRAID II diskette" - Choose option 7 "Advance Functions" - Choose option 8 "Display/Change Adapter Params" - Choose option 5 "Set Channel -> Bank Mapping" Using the same example (as in step 1), the Channel-Bank mapping should be set as follows: ___________________________________________________________ É CHANNEL -> BANK MAPPING É É___________________________________________________________É É É LOW ID HIGH ID LOW(REVERSE) HI (REVERSE) É É_____É_____________________________________________________É É CH1 É :E É É_____É_____________________________________________________É É CH2 É :D É É_____É_____________________________________________________É É CH3 É :C É É_____É_____________________________________________________É - Ensure the Channel-Bank Mapping reflects the actual physical SCSI cabling (as was NOTED in step 1). Date: August 7, 1998