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Source
Retain tip
H013309
Symptom
- Excessive cleaning
indications (Amber LED on solid)
- Tape drive not
recognized on Channel 2 on the PCI RAID Adapter (FRU part
number 06h5078 or 06H3059)
- Tape drive backup/restore
fails (Amber LED flashes), but is successful after the power
is cycled
- Other unexplained intermittent tape backup
failures
Affected configurations
- The 4mm DAT tape
drive is FRU part number 16G8454 or FRU part number
16G8456.
- The tape drive may have jumpers or dip
switches.
- The tape drive may be 3.5" or 5.25" form
factor.
Solution
Read and understand
this entire tip before attempting to perform the actions
below.
Update the tape drive with the latest microcode
(UCODE).
The following two methods are
available:
1. Microcode
update utility diskette.
a. Download 4MMDAT4.EXE for
tape drives with switches.
b. Download 4MMDAT5.EXE for tape
drives with jumpers.
-OR-
2. Microcode update
tape cartridge. Use this method for updating tape drives
connected to RAID adapters.
Note: For RAID systems,
it is still necessary to download the appropriate diskette so
the current UCODE can be determined using the /D option
explained later.
In addition the file 4MMREAD.TXT can
be viewed on-line with a WEB browser and the file README.TXT,
which is on both utility diskettes, should be printed for
detailed instructions.
Determining the
current tape drive microcode level
Boot the diskette
made from the 4MMDAT?.EXE and type the following at the
A:\> prompt:
MU_TAPE4
/D
Enter
or
MU_TAPE5
/D
Enter
Note: Error messages and
beeps will be generated as many ASPI device drivers attempt to
load; these errors are normal and should be ignored as the
correct driver will load.
If the UCODE level is BELOW
the level listed in the chart below, call the IBM PC
HelpCenter for the correct microcode update tape. Please
include the physical size ( 3.5" or 5.25") to insure the
proper tape is provided.
In addition, perform all of
the following:
1. Tape drive stand-alone diagnostics. Use
the diagnostic tape cartridge.
2. Verify proper SCSI
termination and cable connections
3. Verify tape media
quality (IBM or Sony are recommended).
4. Clean tape drive
(IBM cartridge is recommended).
5. Verify that all the
software device drivers are installed and that all the drivers
are current.
|
FRU |
Vendor |
Form Factor |
SCSI ID Configuration |
Latest UCODE |
| 16G8454 |
Archive |
5.25" |
switches |
4BKC |
| 16G8456 |
Archive |
3.5" |
switches |
4BKC |
| 16G8454 |
Conner |
5.25" |
jumpers |
5AJ |
| 16G8456 |
Conner |
3.5" |
jumpers |
5AJ | Use one of the
following procedures to update the microcode on the 4/10GB
tape drives. The update takes approximately one to three
minutes.
Procedure using the
microcode update utility diskette
1. If a tape is
already present in the tape drive, eject the tape prior to
running the utility diskette.
2. Perform a shutdown of
the operating system and power off the system and insert the
Utility Diskette.
3. If the tape drive is external,
power it on first.
4. Power on the system which will
boot to the Utility Diskette.
5. Verify that the
tape drive is functional by testing it with the diagnostic
tape cartridge. The tape will eject when the diagnostic is
complete.
6. Verify that the Utility Diskette is
compatible with the model tape drive you are upgrading. See
the chart above.
7. Follow the instructions in the
README.TXT to ensure that the correct device drivers are
loaded.
8. Type MU_TAPE4 or MU_TAPE5 <Enter> and
follow the on-screen instructions. The microcode update takes
approximately one to three minutes.
9. When the update
is complete, and all the lights on the tape drive have been
continuously off for 30 seconds, remove the Utility Diskette
and reboot the system.
Procedure using the
microcode update tape cartridge
Note: A microcode tape
is unique and can only be used for a microcode update. This
tape cannot be duplicated locally to another tape drive,
copied to a system fixeddisk, or used as a backup or data tape
because the tape header has special code which executes
immediately when the tape is inserted into the tape drive. The
tape cannot respond to normal tape operations and is therefore
not usable for any other purpose.
Caution:
Do not
power down the tape drive during the three minute microcode
update process. This will cause damage to the tape
drive.
1. Perform a shutdown of the operating system
and power off the system.
2. If the tape drive is
external, power it on first.
3. Power on the system.
Note: It is not necessary for the tape drive to be connected
to the SCSI bus for this update process. If the unit is
connected to the SCSI bus, there should be no data activity on
the bus. The operating system should not be running, because
bus activity will interfere with the microcode update
process.
4. Wait for the
tape drive Power-On Self Test to complete. This takes
approximately ten (10) seconds. Three (3) LEDs flash briefly,
then the left LED blinks for 10 seconds.
5. If a tape
is already present in the tape drive, wait for the drive to
complete the self test, then manually eject the tape by
pressing the eject button.
6. Verify that the tape
drive is functional by testing it with the diagnostic tape
cartridge. The tape will eject when the diagnostic is
complete.
7. Clean the tape drive with the tape
cleaning cartridge. The tape will eject when the cleaning is
complete.
8. There are two fully compatible, but
slightly different versions of the tape drive, therefore you
may have received two different types of tape cartridges. Only
one is compatible with your tape drive. If you insert the
incorrect tape no damage or harm will result. An incompatible
tape cartridge will be rejected by the tape drive and the tape
will be quickly ejected. If this happens, just remove it and
insert the other cartridge which should be
compatible.
a. The microcode update
tape is unique and cannot be copied locally on any tape drive
or system, due to special code written on the header of the
tape.
b. The microcode tape may only be
used 50 times. Prior to the update, an update counter record
is read and if the number of operations exceeds fifty (50), the
update will abort. This minimizes the chance of a worn tape
causing a failure during the update process, and rendering the
tape drive unusable. The tape can not be used for any other
purpose, so should then be discarded.
9. Insert the
microcode update tape. The update process will start
automatically and take up to three (3) minutes to complete.
During the update, the tape drive LEDs will flash and the
cartridge will then be ejected and the LEDs will continue to
flash for approximately 30 seconds.
Caution: The update is not
complete until thirty (30) seconds after the tape has been
ejected AND the LEDs have stopped flashing.
Customers
are responsible for cleaning the tape drive with a cleaning
cartridge. Customers may order this cartridge as FRU part
number 21F8763. |
