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

FIN #: I0824-1

Create Date: Jun/10/02

Keywords: 

Disk drives in some Sun StorEdge T3/T3+ Arrays may be difficult to remove due to sticking drive latches

SunAlert: No

Top FIN/FCO Report: No

Products Reference: T3/T3+ StorEdge Array

Product Category: Storage / Service

Product Affected: 

Systems Affected: 
-----------------  
Mkt_ID   Platform   Model   Description                  Serial Number
------   --------   -----   -----------                  -------------
  -       ANYSYS      -     System Platform Independent        -


X-Options affected:
-------------------
Mkt_ID   Platform   Model   Description           Serial Number
------   --------   -----   -----------           -------------
  -         T3       ALL    T3 StorEdge Array           -
  -         T3+      ALL    T3+ StorEdge Array          -

Parts Affected: 

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

References: 

N/A

Issue Description: 

It may be difficult to remove disk drives from certain Sun StorEdge
T3/T3+ Arrays when the drive latch mechanisms fail to release.  If the
correct actions are not followed to enable the drive latch to
disengage,  damage to the drive latch mechanism, the T3 chassis and the
drive carrier may result.  This may also lead to longer customer
downtime.
   
All T3/T3+ arrays manufactured between May 1, 2001 and August 31, 2001
may exhibit this drive removal problem.  Any T3/T3+ array with a serial
number which begins with 118XXXXX may potentially be affected.  Not all
arrays in this range will have problems.
                                 
This issue is seen when a service engineer tries to disengage the drive
latch.  The latch will not disengage, i.e., the black latch lever will
not pop out, and the drive cannot be pulled from the chassis.
     
The manufacture of the plastic drive carrier was changed to another
supplier, and this resulted in one of the guide rails on the bottom of
the drive carrier being out of spec by up to +0.10 inches.  This issue
was compounded by the fact that the drive was not being biased within
the carrier, resulting in the latch mechanism not having enough room to
operate correctly, i.e., not releasing.      
        
Starting with the first week of September, 2001, the drive supplier
began biasing the drives within the drive carrier.  This gives an
additional 0.020 inches of clearance for the latch mechanism, allowing
normal operation of the latch.  Since this biasing has been
implemented, there have been no latch failures for this problem.
Biasing means that the screw holes in the drive carrier are elongated
to allow some degree of movement of the drive within the carrier.  The
supplier is now using this elongated hole to position the drive either
to the front or back of the carrier.

If this problem is encountered in the Field, please follow the directions
provided in the Corrective Action section below.

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
Enterprise Services Field Representatives who may encounter the above
mentioned problem.
          
To release a sticking drive in a StorEdge T3/T3+ Array, hold the rear
of the chassis with one hand and push the drive carrier with the
sticking latch towards the rear of the chassis with the other hand,
applying increasing pressure until a click is heard.  This is the latch
disengaging.  This will allow the drive to be removed.

Comments: 

None

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

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    
     support 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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