README: 7207-012 1.2GB 1/4" Tape Drive Microcode
This package is being provided to allow the update of older IBM 7207-012 1.2GB 1/4" Tape Drives to the latest level of microcode that is currently shipping from IBM.
Customers are encouraged to install the latest microcode level
themselves. The microcode and instructions are available for
customer use at the IBM external web site:
This is a re-release of the microcode. The microcode is the same as released in February 1997.
All levels of AIX that this product was announced on.
The typical time to install this microcode is .5 hrs.
The microcode becomes active when installed and does not require a system reboot to become active.
Yes, but the tape drive must be available with no tape in the drive, and no other processing running to the tape drive.
A reboot is not needed as the microcode is active in the drive when the drive completes microcode download. But to have the Vital Product Data show the new level you must use the AIX rmdev and mkdev commands.
Do not power off the tape drive during microcode download as this may damage the tape drive microcode requiring the tape drive to be replaced.
Remove any tape cartridge from the drive prior to attempting the microcode download.
All pSeries and RS/6000 machines this product was announce on. In general if the tape drive configures and is available with the VPD showing the Machine Type and microcode level as described in this README the machine is one affected.
Table 1. Microcode History
|Tape Drive P/N||Tape Drive FRU P/N||Microcode Level||What does this microcode change
|46G2688||46G2689||I04:38||First Microcode level shipped.
|16G8598||21H5155||I07:03||Microcode changes to support changes in the drive hardware.
|16G8598||21H5155||I07:24||Fixes possible tape drive memory error.
|16G8598||21H5155||I09.23 or I09:23||Dry cleaning cartridge support enhanced.
Enhanced Read/Write error handling.
|16G8598||21H5155||I09.32 or I09:32||Further enhanced Read/Write error handling of marginal tapes.
To determine if your machine(s) has one of these level tape
drives, type the command on an AIX prompt:
lscfg -vl rmt* | pg
* The "*" will show the Vital Product Data for all tape drives that are in the available state.
The output of the command have the combined Z1 and Z2 fields showing
the microcode level of the drive.
DEVICE LOCATION DESCRIPTION
rmt1 00-00-01-5,0 1.2 GB 1/4-Inch Tape Drive
Machine Type and Model...... IBM 4100
Download the microcode file to the system you are going to install the microcode on.
Note: Previously installed microcode not on the system
The AIX diagnostics will look for earlier versions of microcode on the device you chose for the install. When you see the message from the AIX diagnostics about download microcode without the previous level present reply to the prompt to continue with the install even though the previous level of microcode is not available on the system.
To start the install enter the following AIX command:
Select Service Aids
Select Microcode Download
Follow the instructions.
To have the tape drive VPD data show the current level of microcode
just installed in the drive do the following AIX commands:
rmdev -l rmtx <--where x is the drive number
mkdev -l rmtx <--where x is the drive number