Dell PowerVault 200S Leitfaden

Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions 1

Dell™ PowerVault™ 2xxS

Storage SystemsSCSI Backplane

Board Replacement Instructions

This document describes how to replace the small computer system interface

(SCSI) backplane board in the Dell PowerVault 2xxS storage system. To access

the SCSI backplane board, all of the components in the storage system must

be removed.

Before you perform any of the procedures in this section, read the following

warning for your personal safety and to prevent damage to the storage system

from electrostatic discharge (ESD).

WARNING: The power supplies in this system produce energy haz-

ards, which can cause bodily harm. Only trained service technicians

are authorized to perform the procedures in this document.

WARNING: FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE

EQUIPMENT WHEN WORKING INSIDE THE STORAGE SYSTEM:

Before you start to work on the storage system, perform the following

steps in the sequence listed:

1.Turn off the storage system.

2. Disconnect the storage system from its power source(s).

3. Disconnect any communications cables.

4. Wear a wrist grounding strap, and clip it to an unpainted metal sur-

face, such as a part of the chassis.

If a wrist grounding strap is not available, touch the fan guard or some

other unpainted metal surface on the back of the chassis to discharge

any static charge from your body.

See the Dell PowerVault 200S, 201S, 210S, and 211S Storage SystemsInstalla-

tion and Service Guide for cabling and power information.

System Preparation

If the storage system is installed in a rack, it must be removed from the rack

before the SCSI backplane board can be replaced. Likewise, the storage sys-

tem must be removed from its enclosure if it is used in a stand-alone

configuration. See the Dell PowerVault 200S, 201S, 210S, and 211S Storage

Systems Installation and Service Guide for rack and stand-alone information.

2Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions

SCSI Backplane Replacement Overview

Use the following procedures, in the order listed, to replace the SCSI back-

plane board.

1.Remove the hard-disk drives.

2. Remove the power supplies.

3. Remove the cooling fans.

4. Remove the enclosure services modules or enclosure services expander

modules.

5. Remove the component mounting bracket.

6. Remove the dual-bus split backplane module.

7.Remove the SCSI backplane board.

8. Install the replacement SCSI backplane board.

9. Install the dual-bus split backplane module on the replacement SCSI back-

plane board.

10. Install the component mounting bracket.

11.Install the enclosure services or enclosure services expander modules.

12. Install the cooling fans.

13. Install the power supplies.

14. Install the hard-disk drives.

Each procedure is described in the following sections.

Remove the SCSI Hard-Disk Drives

CAUTION: Note the location of the SCSI hard-disk drives as you

remove them from the drive bays. During the installation procedure

(found later in this document), you must return the SCSI hard-disk

drives to the same drive bays from which they were removed.

To remove the SCSI hard-disk drives from the drive bays, perform the following

steps.

NOTE: The storage system comes with either a silver, swing-out lock bar or a

black, removable lock bar, which secures the hard-disk drives in their drive bay

slots.

1.Using the key, unlock the keylock.

2. For a storage system with the silver, swing-out lock bar, using your finger-

tips, tap up on the lock bar. The lock bar easily swings out and down, just

below the level of the drive bays (see Figure 1).

Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions 3

If the storage system is in a stand-alone configuration, tap the bar to the

left. The lock bar springs out. Swing the lock bar to the right of the drive

bays.

Figure 1. Keylock and Swing-out Lock Bar (Silver)

NOTICE: To avoid damage, do not pull the tab handle of the

black, removable lock bar out too far. Figure 2 shows the lock bar

at an exaggerated angle (after it is completely out of its hole).

For a storage system with the black, removable lock bar:

a. Grasp the tab handle on the lock bar and gently pull it toward you,

about 1/2-inch away from the unlocked keylock.

b. Slide the left end of the lock bar to the right to remove it from its hole

(see Figure 2).

Figure 2. Keylock and Removable Lock Bar (Black)

3. Remove the hard-disk drives.

NOTICE: Handle the hard-disk drives with care. The carriers pro-

vide some protection, but the hard-disk drives can be damaged

by rough handling. When removing the hard-disk drives from the

storage system, place them on a padded surface. Never drop the

hard-disk drives.

Release the hard-disk drive carrier by pressing down on the hard-disk drive

carrier lock (see Figure 3) and swing the carrier handle down (see Figure 4).

lock bar keylock

enclosure status indicators

drive bays

key lock

lock bar

tab handle

4Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions

Slowly pull the carrier toward you until it slides free of the drive bay.

Figure 3. Drive Carrier Lock

Figure 4. Drive Carrier Handle

Remove the Power Supplies

NOTICE: In a nonredundant system, note the location of the power

supply and the power-supply blank as you remove them from the

power-supply bays. During the installation procedure (found later in

this document), you must return the power supply and the power-

supply blank to the same power-supply bays from which they were

removed.

NOTE: A redundant storage system has two power supplies. A nonredundant

storage system has one power supply and one power-supply blank. Because a

power supply and a power-supply blank are removed in the same manner, both

components are referred to as a power supply in this procedure.

To remove the power supplies from the storage system, perform the following

steps:

Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions 5

1.Using a Phillips-head screwdriver, turn the two captive screws counter-

clockwise to release the power supply from the power-supply bay.

2. Holding the handle on the power supply, carefully pull the power supply out

of the power-supply bay (see Figure 5).

NOTE: The power-supply handle is provided to ease the task of pulling the

power supply free from the bay. Do not use the handle to carry the Dell

PowerVault 2xxS storage system.

Figure 5. Removing a Power Supply on a Redundant System

3. Repeat steps 1 and 2 to remove the remaining power supply.

Remove the Cooling Fans

NOTICE: In a nonredundant system, note that the cooling-fan blank

is located in the right cooling-fan bay. During the installation proce-

dure (found later in this document), you must return the cooling-fan

blank to the right cooling-fan bay.

NOTE: A redundant storage system has three cooling fans. A nonredundant

storage system has two cooling fans and one cooling-fan blank. Because a

cooling fan and a cooling-fan blank are removed in the same manner, both

components are referred to as a cooling fan in this procedure.

To remove the cooling fans from the storage system, perform the following

steps:

1.Using a Phillips-head screwdriver, turn the two captive screws counter-

clockwise to release the cooling fan from the cooling-fan bay.

captive screws (2)

6Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions

2. Holding the captive screws, carefully pull the cooling fan out of the cooling-

fan bay (see Figure 6).

Figure 6. Removing a Cooling Fan

3. Repeat steps 1 and 2 to remove the remaining cooling fans.

Remove the Enclosure Services Modules or

Enclosure Services Expander Modules

NOTICE: In a nonredundant system, note the location of the enclo-

sure services module, the enclosure services expander module, or

the terminator blank as you remove them from the module bays.

During the installation procedure (found later in this document), you

must return the enclosure services module, enclosure services

expander module, or the terminator blank to the same module bays

from which they were removed.

NOTICE: In a redundant system, note the location of the enclosure

services or enclosure services expander modules as you remove

them from the module bays. During the installation procedure (found

later in this document), you must return these modules to the same

module bays from which they were removed.

NOTE: A redundant storage system has two enclosure services or enclosure

services expander modules. A nonredundant storage system has one enclo-

sure services module or one enclosure services expander module and one

terminator blank. Because an enclosure services module, enclosure services

expander module, and a terminator blank are removed in the same manner, all

three components are referred to as an enclosure services module in this

procedure.

To remove the enclosure services modules, perform the following steps:

captive screws (2)

Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions 7

1.Using a Phillips-head screwdriver, loosen the captive screw at the top of

the enclosure services module.

2. Grasp the handle on the enclosure services module and pull it from the

module bay (see Figure 7).

Figure 7. Enclosure Services Module Removal

3. Repeat steps 1 and 2 to remove the remaining enclosure services module.

Remove the Component Mounting Bracket

To remove the component mounting bracket, perform the following steps:

1.Using a Phillips-head screwdriver, remove the two screws that secure the

component mounting bracket to the chassis (see Figure 8).

2. Lift the component mounting bracket slightly and slide it out of the chassis.

captive screw

8Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions

Figure 8. Removing the Component Mounting Bracket

Remove the Dual-Bus Split Backplane Module

Carefully hold the dual-bus split backplane module on both sides and, using a

wiggle motion, pull the module from the backplane board (see Figure 9).

Figure 9. Dual-Bus Split Backplane Module Location

Remove the SCSI Backplane Board

To remove the SCSI backplane board, perform the following steps:

1.Looking in the rear of the storage system, locate the fifteen screws that

secure the two halves of the chassis together. There are nine across the

top and six across bottom of the backplane board (see Figure 10).

dual-bus split backplane module

Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions 9

Figure 10. Screw Location

2. Using a ball-head Allen driver,remove the fifteen screws. Use an

11.5-inch–long, 5/64-inch ball-head Allen driver to remove the screws

located inside the enclosure services module bays on the left and right side

of the chassis (see Figure 11).

NOTE: A magnetized 11.5-inch–long, 5/64-inch ball-head driver is included

with the SCSI backplane board in the service kit.

Figure 11. Screw Location in the Left Enclosure Services Module Bay

3. Separate the two chassis halves to remove the backplane board (see

Figure 12).

Figure 12. Chassis Separation

image shown without chassis

screw

left-side enclosure services

module is shown

10 Dell PowerVault 2xxS Storage SystemsSCSI Backplane Board Replacement Instructions

Install the Replacement SCSI Backplane Board

To install the replacement SCSI backplane board, perform the following steps:

1.Place the board between the chassis halves. Ensure that the board is right

side up and the dual-bus split backplane module faces the back half while

the eight hard-disk drive connectors face the front half.

2. Using the magnetized 11.5-inch–long, 5/64-inch ball-head Allen driver,

thread two screws through the left enclosure services module bay,

through the screw holes in the backplane board, and into the screw holes

of the front half of the chassis. Turn the screws until they catch in the

screw holes of the front half of the chassis. Do not tighten the screws at

this time. Install the two screws in the right enclosure services module bay

in the same manner.

NOTE: The magnetized 11.5-inch–long, 5/64-inch ball-head Allen driver

(included in the service kit) makes it easier to install the screws in the

enclosure services module bays.

3. Thread the eleven remaining screws through the inside of the component

area of the back chassis half, through the screw holes in the backplane

board, and into the screw holes of the front half of the chassis. Turn the

screws until they catch in the screw holes of the front half of the chassis.

Do not tighten the screws at this time.

NOTE: If the front half of the chassis is slightly bowed down, making it dif-

ficult to align the screw holes, try installing a hard-disk drive temporarily

into one of the center drive bays. The hard-disk drive should straighten the

bow in the chassis, making it easier to thread the screws. Remove the

hard-disk drive when all the screws are inserted.

4. Carefully insert the left enclosure services module or enclosure services

expander module into the left module bay. Push the module all the way to

the back of the bay and at the same time adjust the backplane board so

that the board connector aligns with the module connector. Push the mod-

ule until it is seated in the board connector.

NOTE: Temporarily installing the enclosure services modules or enclosure

services expander modules and seating their connectors to the connectors

on the backplane board ensures that the backplane board will be aligned as

the two chassis halves are screwed together.

5. Using a Phillips-head screwdriver, tighten the screw to secure the enclo-

sure services module or enclosure services expander module to the

chassis.

6. Repeat steps 4 and 5 for the right (second) enclosure services module,

enclosure services expander module, or terminator blank.

7.Tighten the eleven screws on the inside of the component area to secure

the chassis front, backplane board, and chassis back together.

8. Using a Phillips-head screwdriver, loosen the captive screws at the top of

the enclosure services modules.

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