D-Link DSN-3400 Service Manual

D-Link Systems, Inc.™
xStack Storage DSN-3200 & DSN-3400
ECN – Drive Activity Light Fix

(rev. 1)

D-Link Systems, Inc. Page 1

February 7, 2008

xStack Storage DSN-3200 & DSN-3400
ECN – Drive Activity Light Fix

© 2008 D-Link Systems, Inc. All Rights Reserved

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Copyright © 2008 D-Link Systems, Inc.™

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D-Link Systems, Inc.
17595 Mount Herrmann Street
Fountain Valley, CA 92708

www.D-Link.com

D-Link Systems, Inc. Page 2

February 7, 2007

xStack Storage DSN-3200 & DSN-3400
ECN – Drive Activity Light Fix

1 Introduction

Note: For the remainder of this document, issues that pertain to both the DSN-3200 and DSN-3400 units
will be identified as DSN-3200/3400.

D-Link Systems, Inc.™ has identified an issue wherein the drive activity light is constantly illuminated
when using a Seagate Barracuda ES.2 1TB SATA-II hard drive (Seagate part number ST31000340NS).
This issue affects DSN-3200/3400 units shipped before January 2008. Please review section 1.3 of this
document for a detailed description of how to determine if your system is in need of this resistor pack
update. If you determine that your system is affected, then please proceed to the step-by-step update guide
in Section 2.

1.1 Purpose

The purpose of this document is to communicate the steps required to identify affected DSN-3200/3400
units shipped before January 2008. This document will include how to identify affected systems and the
steps required to fix the issue.

1.2 Scope

This document is an ECN (Engineering Change Notice) concerning the identification of affected DSN­3200/3400 units shipped before January 2008 and the installation of four resistor packs to fix the issue.

This ECN relates to any DSN-3200/3400 units shipped from D-Link before
January 2008.

This issue does not affect the functionality of the DSN-3200/3400 unit, nor
does it affect the data storage functionality of the Seagate ST31000340NS 1TB
hard drive. The drive activity light simply remains illuminated at all times.

1.3 Identification of Affected Systems

DSN-3200/3400 units shipped after January 2008 will be modified at the factory to contain the four resistor
packs described in this document. However, any units shipped before this date will need to be examined.

Definitive identification of affected DSN-3200/3400 units will require two steps. For this procedure it is
highly recommended that the system be shut down and power cords removed to minimize the electrical
shock risk.

Please follow these steps for inspection:

Step 1) Shut down the DSN-3200/3400 through your management GUI. Please follow the instructions in
your xStack Storage User’s Guide.

Step 2) In order to minimize electrical shock risk, remove the three power cords from your DSN-3200/3400
unit’s power supply.

D-Link Systems, Inc. Page 3

February 7, 2007

xStack Storage DSN-3200 & DSN-3400
ECN – Drive Activity Light Fix

Step 3) Remove the two right-most drives from the enclosure as shown in figure 1.

Figure 1: Remove the two right-most drive trays

Step 4) Using a flashlight, examine the upper portion of the now visible chassis backplane PCB (Printed
Circuit Board) located at the rear of the space. You should see something similar to that found in figure 2.
Here you will see a revision number. If your backplane has revision 1.4 or later, then your system is up to
date and needs no changes. If your system has Revision 1.1, 1.2 or 1.3, then you will need to continue to
step 5. You may now reinsert the drive trays.

Figure 2: Identifying the backplane revision number

D-Link Systems, Inc. Page 4

February 7, 2008