The Microcode files provided in this package are only for use when installing disk drive microcode to a disk drive installed in a pSeries Server using the AIX or Linux Operating System.

1.1 Disk Drives Affected

The microcodes in this package applies ONLY to the following IBM SCSI hard disk drive PN's.

Size P/N

------- --------------

35G 26K5175

70G 26K5176

141G 26K5177

1.2 Microcode Change History

Release date	MC Level	Change Description
6/3/2005	S37A	-Fix read capacity issue

2. AIX Operating System

2.1 Installation Time

Approximately 20 minutes if drive is part of rootvg(using Diagnostics CD); Approximately 5 minutes/drive if drive is not part of rootvg(using concurrent diagnostics).

2.2 Determine Drive Part Number and Current Microcode Level
2.2.1 SCSI Drives attached to PCI-X Ultra 320 SCSI RAID Adapter

use smitty to find the part number and drive microcode level:

smitty ==> Devices ==> Disk Array ==> IBM PCI-X SCSI Disk Array ==> PCI-X SCSI Disk Array manager ==> Diagnostics and Recover Options

==> Display pdisk Vital Product Data

*part number is displayed next to Part Number field (see below)

*drive microcode level is displayed next to ROS Level and ID field (see below)

If the data returned in the "Part Number" field matches the one listed below AND the "ROS Level and ID...." field of that data is less than "53333741", this microcode applies. If this level is already installed then the "ROS Level and ID...." shows: "53333741".
Note: Drive microcode level is displayed in Hex value of ASCII characters in VPD data. Each alpha-numeric ASCII character converts to a 2-digit hex
number. For example in VPD displayed above, 53 Hex= ASCII character S; 33 Hex= ASCII character 3 ; 37 Hex=ASCII character 7; 41 Hex=ASCII character "A", therefore the microcode level is S37A. Also note that last four digits of field "Device Specific.(Z1)........ xxxxS37A" shows drive's microcode level.

(35Gb)
        Manufacturer................IBMAS400
        Machine Type and Model......XCPR036
        Part Number................. 26K5175
        ROS Level and ID............ 53333741
        Serial Number...............0000D552
        EC Level....................xxxxx
        FRU Number..................
        Device Specific.(Z0)........ xxxxxxxxxxxx
        Device Specific.(Z1)........xxxxS37A
        Device Specific.(Z2)........xxxx
        Device Specific.(Z3)........xxxxx
        Device Specific.(Z4)........xxxx
        Device Specific.(Z5)........xx
        Device Specific.(Z6)........

(70Gb)
        Manufacturer................IBMAS400
        Machine Type and Model......XCPR073
        Part Number................. 26K5176
        ROS Level and ID............ 53333741
        Serial Number...............0000D552
        EC Level....................xxxxx
        FRU Number..................
        Device Specific.(Z0)........ xxxxxxxxxxxx
        Device Specific.(Z1)........xxxxS37A
        Device Specific.(Z2)........xxxx
        Device Specific.(Z3)........xxxxx
        Device Specific.(Z4)........xxxx
        Device Specific.(Z5)........xx
        Device Specific.(Z6)........

(141Gb)
        Manufacturer................IBMAS400
        Machine Type and Model......XCPR146
        Part Number................. 26K5177
        ROS Level and ID............ 53333741
        Serial Number...............0000D552
        EC Level....................xxxxx
        FRU Number..................
        Device Specific.(Z0)........ xxxxxxxxxxxx
        Device Specific.(Z1)........xxxxS37A
        Device Specific.(Z2)........xxxx
        Device Specific.(Z3)........xxxxx
        Device Specific.(Z4)........xxxx
        Device Specific.(Z5)........xx
        Device Specific.(Z6)........

===============================================================

2.3 Transferring and Unpacking the Microcode Update Package

2.3.1 Internet RPM package

Note: The instructions that follow are specific AIX commands. AIX commands are CASE (lower and upper) SENSITIVE, and must be entered exactly as shown, including filenames.

a) Make a directory on an AIX system to receive the RPM format file.
Enter: mkdir /tmp/microcode

b) Transfer the RPM format file to the /tmp/microcode directory (using "Save as ...").
You'll see the filename is 15K147i.S37A.AIX.rpm

c) Unpack the file by executing the instructions below:
Enter the commands:
rpm -ihv –ignoreos 15K147i.S37A.AIX.rpm

The file size and checksum will be verified.

The microcode files will be added to /etc/microcode/

2.3.2 CD-ROM

Copy microcode updates from the CD-ROM to standard locations on your local disk:

1. RPM packaged microcode files will be copied to "/tmp/microcode/RPM"
2. Microcode files will be copied to /usr/lib/microcode

Notes:
- "/etc/microcode" is a symbolic link to "/usr/lib/microcode".
- If permission does not allow the copy to the above stated directory
or file then the user will be prompted for a new location.
========================================================

2.4 Microcode Download Procedure

2.4.1 Microcode Download Procedure-SCSI Drives Attached to PCI-X Ultra 320 RAID Adapter

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

NOTE: Please save current and older versions of the microcode update files in case you need to restore your system.

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.

Use smitty to download microcode:

smitty ==> Devices ==> Disk Array ==> IBM PCI-X SCSI Disk Array ==> PCI-X SCSI Disk Array manager ==> Diagnostics and Recover Options

==> Download Microcode to a Physical Disk

======================================================

3. Linux Operating System

3.1 Linux 2.6 kernel(such as SuSE SLES 9 or RHEL 4)

Microcode can be updated using the iprconfig utility. The iprconfig utility

allows for multiple levels of adapter and device microcode to exist on the

system at the same time. After the device to update microcode is

selected, all available microcode levels are presented to choose to download.

a) If using SLES 9 base, install the package by typing:

rpm -ivh --ignoreos 15K147i.S37A.AIX.rpm

b) If using SLES 9 SP1 or better or RHEL 4 or better, install the package by typing:

rpm -ivh 15K147i.S37A.LINUX.rpm

2. Update the microcode by typing:

iprconfig

Press Enter.

3. Select Download microcode and press Enter.

4. Select the device you wish to update by typing a 1 then pressing Enter. Multiple devices may be selected.

5. Select the microcode image to be downloaded to the device by typing a 1 then pressing Enter.

6. Press Enter again to confirm the download (display shows “Microcode Download in Progress” with elapsed time)

7. If multiple devices were selected, repeat from Step 5 for the next device.

To check the microcode level:

1. Start iprconfig utility,

2. Select "Display hardware status" option.

3. Select disk to query by typing a 1 next to it and pressing "Enter"

4. Look at the "Firmware Version" field

--------------------------------------------------------------------------

3.2 RHEL 3:

Microcode can be updated using the iprupdate utility. If iprupdate finds newer

microcode on the system it will be downloaded to the disk.

1. Install the package by typing:

rpm -ivh --ignoreos 15K147i.S37A.AIX.rpm

Press Enter.

2. Update the microcode by typing:

iprupdate

Press Enter.

To check the microcode level:

1. Start iprconfig utility,

2. Select "Display disk hardware status" option.

3. Find the disk you wish to query and note its serial number.

4. Type "d" to get to the "Display disk unit details" screen.

5. Select disk to query by typing a 5 next to it and pressing "Enter"

6. Look at the "Firmware Version" field

-------------------------------------------------------------------------

3.3 SLES 8 SP4

Microcode can be updated using the sisupdate utility. If sisupdate finds newer

microcode on the system it will be downloaded to the disk.

1. Install the package by typing:

rpm -ivh --ignoreos 15K147i.S37A.AIX.rpm

Press Enter.

2. Update the microcode by typing:

sisupdate

Press Enter.

To check the microcode level:

1. Start sisconfig utility,

2. Select "Display disk hardware status" option.

3. Find the disk you wish to query and note its serial number.

4. Type "d" to get to the "Display disk unit details" screen.

5. Select disk to query by typing a 5 next to it and pressing "Enter"

6. Look at the "Firmware Version" field