Table of Contents

General Information

Problem Fixed

Disk Drives Affected

Machines Affected

Operating System levels supported

Determine Drive Model, FRU&PN And Current Microcode level

Downloading and Unpacking the Firmware Update Package From WEB

SCSI Hard Disk Drive Microcode Download Procedure

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General information

Problem Fixed:
Improve drive reliability in the (Ultrastar DNES) 4.5GB,9.1GB and 18.2GB SCSI hard disk drives.

Below is a summary of changes in this level of microcode:

1- Fix to help ensure proper update of data written to a sector when reassignment occurs.
2- PFA Error Reporting: When PFA (Predictive Failure Analysis)trips, it reports too frequently and fills the system error log.Microcode has been changed to
    avoid this situation.
3- PER (Post Error): PER is enabled so that drive reports sector reallocation back to the AIX (this is an AIX requirement).
4- Microcode enhancement to improve drive's ability to avoid off-track write occurrence in drives manufactured prior to August 1999.

Disk Drives Affected:

This microcode is for use in the following SCSI hard disk drive:

Size             Model        FRU Number   Assembly P/N
--------------  ------------  --------    --------------
4.5GB (68 Pin)  DNES-304300W  25L3102      25L1854
9.1GB (68 Pin)  DNES-309170W  25L3101      25L1861
9.1GB (80 Pin)  DNES-309170Y  25L3113      25L1963
18.2GB(68 Pin)  DNES-318350W  25L3100      25L1860
18.2GB(80 Pin)  DNES-318350Y  25L3112      25L1962

The microcode upgrade will bring up to the current level which is SAGU.

Machines Affected: All RISC/6000 machine using this DASD.

Operating System levels supported:

All levels of AIX that these products were announced on.

Determine the Drive Model, FRU&PN and Current Microcode level:

To see the drive type and current microcode level, Execute the following command:

lscfg -vl hdisk* |pg

Example of the info on a  9.1GB SCSI hard disk:
lscfg -vl hdisk2
DEVICE    LOCATION        DESCRIPTION
hdisk2     10-70-00-11,0   16 Bit SCSI Disk Drive (9100 MB)
Manufacturer.........................IBM
Machine Type and Model......DNES-309170W
FRU Number.........................25L3101
ROS Level and ID.................53414755
Serial Number.......................AJ020185
EC Level...............................F42017
Part Number.........................25L1861
Device Specific.(Z0)........000003029F00013A
Device Specific.(Z1)........25L2871
Device Specific.(Z2)........0933
Device Specific.(Z3)........99048
Device Specific.(Z4)........0001
Device Specific.(Z5)........22
Device Specific.(Z6)........F42036

If the data returned in the "Part Number" field matches the one listed above AND the "ROS Level and ID...." field of that data is below 53414755, this microcode applies.If this level is already installed then the "ROS Level and ID...." will show:  "53414755"

a) Make a directory on an AIX system to receive the AIX format file.

Enter: mkdir /tmp/fwupdate

Note: If the directory /tmp/fwupdate already exists, make sure it is empty before proceeding.

b) Transfer the AIX format file to the /tmp/fwupdate directory (using "Save as ...").

You'll see the filename is dnes_sagu.bin

c) Unpack the file by executing the instructions below. You will be asked for the password from the license agreement.

Enter the commands:

cd /tmp/fwupdate

chmod +x dnes_sagu.bin

./dnes_sagu.bin

[Don't overlook the periods (.) in the above command.]

The directory dnes_sagufw with these files will be added to /tmp/fwupdate.

 DNES-30.52413032.53414755
 DNES-30.52413030.53414755
 DNES-30.52413031.53414755
 DNES-31.52413030.53414755
 DNES-31.52413031.53414755
 dnes_sagu.txt

Note: dnes_sagu.txt is a read me file(same is this file), it can be saved or printed for future use.

Enter the following command to copy the microcode files to " /etc/microcode " directory :
cp /tmp/fwupdate/dnes_sagufw/DNES*  /etc/microcode

Follow the procedure below to copy these file onto two diskettes:
Note: Don't overlook the complete path of microcode files, microcode download will not work if files are not copied with complete path onto the diskette.

Diskette 1:
Enter command
ls /etc/microcode/DNES-30*55 | backup -ivf /dev/rfd0
This will produce AIX backup diskettes. Label the diskettes:
" DNES 4.5&9.1GB Microcode Level SAGU"

Diskette 2:
Enter command:
ls /etc/microcode/DNES-31*55 | backup -ivf /dev/rfd0
This will produce AIX backup diskettes. Label the diskettes:
" DCHS 18.2GB Microcode Level SAGU"
 

SCSI Hard Disk Drive Microcode Download Procedure

Warning: Do not power off the system or the drive during microcode download as this may permanently damage the disk drive

Caution: The microcode download process is nondestructive to the hard disks; however, as a precaution, ensure that a backup operation has been performed on the affected systems PRIOR to the microcode installation.

Can microcode be installed Concurrently?
If the disk is part of rootvg, microcode download can ONLY be performed in service mode using diagnostics CD. If disk is not part of rootvg, microcode download can be performed cuncurrently as long as drive is not in use.

Is system reboot needed to activate the microcode: Yes

Installation Time:  Approximately 30 minutes CE Time; Approximately 15 minutes System Time

Procedure:
1. Properly shutdown the system.
2. Boot up the system in SERVICE mode with the CDROM diagnostics(Use diagnostics level 4.21 or above;  It is recommended to use the same level of
    Diagnostic CD as the AIX ).
3. Select the "Task Selection" from diagnostics menu.
4. Select "Microcode Download" from "Task Selection" menu.
5. Select hard disk drive (disk) that needs to be updated from the list of devices.
6. Select "diskette" as the Input device, Select "latest" as the Microcode level to download, Select "YES" to the question whether to download microcode even if present level is missing on the media (the diskette does not have the level that is loaded on the disk).
NOTE: A prompt will ask you to insert the microcode diskette into the floppy drive. Insert the diskette which accompanies these instructions. If this level is already installed in the drive you've selected a message will let you know. A message will also come up because the diskette does not have the previous level microcode on the diskette. This is true and is not required to complete the download. Hit enter to continue.
7- The following microcode files are included in the diskettes, use the list below for cross reference:

Drive                     Model                  FRU#          PN                Microcode File Name
--------------------   ----------------    -----------       ------------      ------------------------------
4.5GB (68 Pin)    DNES-304300W     25L3102        25L1854       DNES-30.52413032.53414755   |
9.1GB (68 Pin)    DNES-309170W     25L3101        25L1861       DNES-30.52413030.53414755   |--> Diskette 1
9.1GB (80 Pin)    DNES-309170Y      25L3113        25L1963       DNES-30.52413031.53414755   |

18.2GB(68 Pin)   DNES-318350W     25L3100         25L1860      DNES-31.52413030.53414755   |
18.2GB(80 Pin)   DNES-318350Y      25L3112         25L1962      DNES-31.52413031.53414755   |---> Diskette 2

8. The following message will appear on the screen when download is completed: "The microcode download has completed successfully".
9. Return to the Tasks Selection menu and repeat this procedure for each hard disk that requires this microcode.

NOTE: The code takes effect immediately but VPD is not updated. ROS info will not indicate the change until the system is power cycled

10. Exit diagnostic and reboot system in normal mode.