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- Sun Proprietary/Confidential: Internal Use Only -
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                        FIELD INFORMATION NOTICE
                  (For Authorized Distribution by SunService)

FIN #: I0498-1

Create Date: Jun/09/99

Keywords: 

DLT Type III media may not be able to write in

Top FIN/FCO Report: No

Products Reference: DLT Tape III media compatibility

Product Category: Storage / Tape

Product Affected: 

Mkt_ID   Platform   Model   Description   Serial Number
------   --------   -----   -----------   -------------

Systems Affected
----------------

   -     ANYSYS       -     System Platform Independent   -

X-Options Affected
------------------
SG-XLIBDLT1-280G       -	-    TAPE 280/560GB STOREDGEL280 DT   -
SG-XLIBDLT2-280G       -	-    TAPE 280/560GB DLT7000 FOR RCK   -
SG-XTAPDLT-021A        -	-    TAPE 35GB DLT7000 FLEXIPACK      -
SG-XTAPDLT-021A-O      -	-    TAPE 35GB DLT7000 FLEXIPACK      -
SG-XLIBDLT1-1TB-2      -	-    STOREDGE L1000 1 TAPE DESKSIDE   -
SG-XLIBDLT1R-1TB-2     -	-    STOREDGE L1000 1 TAPE RACKMNT    -
SG-XLIBDLT4-1TB-2      -	-    STOREDGE L1000 4 TAPE DESKSIDE   -
SG-XLIBDLT4R-1TB-2     -	-    STOREDGE L1000 4 TAPE RACKMNT    -
SG-XLIBDLT4-11TB       -	-    STOREDGE L11000, 4 X DLT7000     -
SG-XLIBDLT16-11TB      -	-    L11000 11TB 16 DLT7000 DR. HA    -
SG-XTAPDLT1-1TB        -	-    DLT7000 LIBRARY TAPE DRIVE       -
SG-XTAPDLT2-11TB       -	-    DLT7000 TP DR (2) UPGD 4 L1100   -

Parts Affected: 

Part Number     Description                     Model
-----------     -----------                     -----

F370-3272-03  	FRU,DLT 7000 DRV-FOR ETL LIBR     -
F370-3332-02    FRU,DLT 7000 DRV,8MB ETL LIB      -
F370-3516-01    TAPE DRIVE DLT7000 L1000          -
F370-3723-01    L11000, DLT7000,HOT SWAP DRIVE    -
F370-3423-02	DRV,DLT7000,RIALTO,W/FAN	  -
F370-3516-01	FRU, TAPE DRIVE DLT7000 L1000     -
F370-3331-02	FRU,DRV INT DLT7000, 8MB SFIRE	  -
F370-3330-02	FRU,DRVDLT7000,QNTM 8MB LT GRY    -

(SCSI Devices)
Type       Vendor    Model       Firmware    S/N(Min)    S/N(Max) 
----       ------    -----       --------    --------    --------
Tape       Quantum   DLT7000     < 1E48         -           -

References: 

WW StopShip: 	WW001#03569

Issue Description: 

On occasion, writing DLT type III media with a DLT tape drive will
produce a C329 bug check event (invalid back link) upon subsequent
reading of the Type III tape.  A Medium Not Found error message will 
be posted.

This error occurs only when a DLT7000 is writing to DLT type III media
in backward compatibility mode.

The Invalid Back Link error is caused by a logical problem in writing a
control field in DLT2000XT backward compatibility format.  This only
happens in writing the Type 3 tape cartridge which is used in DLT2000XT
tape drives, a two generations old drive.  Sun does not ship Type 3 tape
cartridge with it's DLT7000 products.

Quantum is developing a firmware modification to resolve the back link
problem.  This firmware revision is anticipated to be available in late
June of '99.  See Stop Ship: WW001#03569.

NOTE: This symptom does not apply to DLT Type III media written by
      a DLT2000 or DLT4000 drive.

Implementation: 

---
    	|   |  	MANDATORY (Fully Pro-Active)
  	 ---    
  	 
  
         ---
    	|   | 	CONTROLLED PRO-ACTIVE (per Sun Geo Plan) 
  	 --- 
  	 
  	   			
         ---
    	| X | 	REACTIVE (As Required)
  	 ---

Corrective Action: 

Enterprise Customers and Enterprise Field Service Representatives are
prompted to follow the recommendation shown below, in order to avoid
encountering the Invalid Back Link "C329" error caused by a logical  
problem in writing a control field in DLT2000XT backward compatibility
format:

*Do not to use DLT Type III tape cartridges on any DLT7000 tape product
 until the release of the anticipated firmware revision is available.

Comments: 

The DLT2000XT is an older generation of DLT Tape Drive.  Sun does not  
support this tape drive.  The DLT7000 is supposedly backward compatible  
Read/Write to the DLT2000.


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Implementation Footnote: 

i)   In case of MANDATORY FINs, Enterprise Services will attempt to contact   
     all affected customers to recommend implementation of the FIN. 
   
ii)  For CONTROLLED PROACTIVE FINs, Enterprise Services mission critical sup-   
     port teams will recommend implementation of the FIN (to their respective 
     accounts), at the convenience of the customer. 

iii) For REACTIVE FINs, Enterprise Services will implement the FIN as the need  
     arises.
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