Document Audience:INTERNAL
Document ID:I0955-1
Title:Improved drive firmware will reduce the incidence of HDI failures on IBM Discovery disk drives.
Copyright Notice:Copyright © 2005 Sun Microsystems, Inc. All Rights Reserved
Update Date:2003-05-08

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            - Sun Proprietary/Confidential: Internal Use Only -
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                        FIELD INFORMATION NOTICE
               (For Authorized Distribution by SunService)
FIN #: I0955-1
Synopsis: Improved drive firmware will reduce the incidence of HDI failures on IBM Discovery disk drives.
Create Date: Apr/18/03
SunAlert: No
Top FIN/FCO Report: No
Products Reference: IBM Drive Firmware
Product Category: Storage / Service
Product Affected: 
Systems Affected:
-----------------  
Mkt_ID     Platform     Model      Description                  Serial Number
------     --------     -----      -----------                  -------------
  -          A25         ALL       Sun Enterprise 450                 -
  -          A34         ALL       Sun Enterprise 220R                -
  -          A33         ALL       Sun Enterprise 420R                - 
  -          E4500       ALL       Sun Enterprise 4500                - 
  -          E3500       ALL       Sun Enterprise 3500                - 
  -          E5500       ALL       Sun Enterprise 5500                -  
  -          E6500       ALL       Sun Enterprise 6500                -
  -          E10000      ALL       Sun Enterprise 10000               - 


X-Options Affected:
-------------------
Mkt_ID        Platform   Model   Description         Serial Number    
------        --------   -----   -----------         ------------- 
  -            T3       ALL    Sun StorEdge T3             -
  -            T3+      ALL    Sun StorEdge T3+            -
  -            A1000    ALL    Sun StorEdge A1000          -
  -            D1000    ALL    Sun StorEdge D1000          -
  -            D240     ALL    Sun StorEdge D240           -
  -            A3500    ALL    Sun StorEdge A3500          -
Parts Affected: 
Part Number      Description                       Model
-----------      -----------                       -----
540-4520-01      DRV ASSY 36GB 1 SCSI SPUD&PLAT      -
540-4177-01	 DRV ASSY 18GB10K 1 SCSI W/SPUD      -
540-4440-01	 DRV ASSY 18GB10K 1 FC LP W/SLED     -
540-4367-01      DRV ASSY 36GB    1 FC LP W/SLED     -
References: 
ESC: 541752 - ics/ p/ 2hr/ 2 failed A3500 18GB hdds, pn 540-4178.
Issue Description: 
IBM Discovery model disk drives installed in Sun systems may be 
susceptible to early failure under certain circumstances due to Head 
Disk Interference (HDI).  This reliability issue can negatively impact 
customer operations.

This issue only affects IBM Discovery 18Gb and 36Gb drives with the 
following part numbers:

	Sun P/N	    Vendor P/N
	-------     ----------
	540-4520    IBM DDYS18350
	540-4177    IBM DDYS36950
	540-4440    IBM DDYFT18350
	540-4367    IBM DDYFT36950

For all systems, to determine if a system has one of IBM Discovery drives, 
do one of the following:

   . If the system is down, run the "probe-scsi" command from the "ok" 
     prompt.

   . If the system is up, run the "format" command.

   . If Explorer has run, check the file /opt/SUNWexplorer/bin/diskinfo.

For A1000/A3x00 Arrays attached to a host, an alternative would be to
run one of the two following commands:

   A. run #/usr/lib/osa/bin/drivutil -i 

         Ex: #/usr/lib/osa/bin/drivutil -i c1t0d0

   B. From RM6 GUI,

         RM6 GUI -> Configuration -> Module -> Profile -> drives

For T3/T3+ arrays, an alternative would be to use Explorer output or T3 
commands to identify the part numbers.  The "fru list" command can be used.
 
   T3B Release 2.01.03 2002/11/14 20:16:35 (10.4.41.230)
   Copyright (C) 1997-2001 Sun Microsystems, Inc.
   All Rights Reserved.

   qatest:/:<1>fru list
   ID      TYPE               VENDOR       MODEL        REVISION       SERIAL
   ------  -----------------  -----------  -----------  -------------  --------
   u1ctr   controller card    0301         501-5710-01( 0200/020103    101482
   u2ctr   controller card    0301         501-5710-02( 0200/020103    121902
   u1d1    disk drive          IBM         DDYF36950SUN    F65Y        23H00952


When this isue occurs, the following error code indicates that a drive
has failed due an HDI occurrence:  "Sense Code 02x04".

When the drives are subjected to an excessive idle time (several
hours), the Head Air Bearing Surface (ABS) may pick up excessive disk
lubricant in the cavity of the ABS.  This buildup of excessive
lubricant results in unstable flying characteristics with the ultimate
outcome of Head Disk Interference (HDI) and subsequent drive failures.

This issue is addressed by new disk drive firmware.  The new drive
firmware monitors drive activity, and will exercise the drive head if
defined idle parameters are encountered.  If idle times exceed the
algorithm metrics, the firmware will move the head at specific
intervals over the disk surface.  Moving the head over the disk surface
provides an appropriate airflow which prevents lubricant accumulation
in the head ABS cavity.

There are two firmware patches, one for SCSI drives and one for T3 FCAL
drives.
 
   SCSI Drives: patch 111534-04

      Drive Models and Drive part numbers

      540-4520    IBM DDYS18350
      540-4177	  IBM DDYS36950

   T3 FCAL Drives:  patch 114701-01

      Drive Models and Drive part numbers

      540-4440	 IBM DDYFT18350
      540-4367   IBM DDYFT36950
Implementation: 
---
        |   |   MANDATORY (Fully Proactive)
         ---    
         
  
         ---
        |   |   CONTROLLED PROACTIVE (per Sun Geo Plan) 
         --- 
         
                                
         ---
        | X |   REACTIVE (As Required)
         ---
Corrective Action: 
The following recommendation is provided as a guideline for authorized
Sun Services Field Representatives who may encounter the above
mentioned problem. 

All IBM Discovery disk drives should  be upgraded to the current version 
of the drive firmware available from SunSolve:

	. For T3/T3+ FCAL installtions: patch 114704-01 or later
	
	. For all other installations:  patch 111534-04 or later
	
Special firmware installation instructions are provided in the README 
files.
Comments: 
None.

============================================================================
Implementation Footnote: 
i)   In case of MANDATORY FINs, Sun Services will attempt to contact   
     all affected customers to recommend implementation of the FIN. 
   
ii)  For CONTROLLED PROACTIVE FINs, Sun Services mission critical    
     support teams will recommend implementation of the FIN  (to their  
     respective accounts), at the convenience of the customer. 

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