Compaq StorageWorks HSG60, StorageWorks HSG80, StorageWorks HSZ80, StorageWorks HSZ70, StorageWorks HSJ80 Installation Card

StorageWorks™ by Compaq

Replacing an
External Cache
Battery (ECB)

Open Card Completely Before
Beginning Installation Procedures

About This Card

This document contains instructions for replacing the ECB in a
StorageWorks™ HSG60, HSG80, HSJ80, HSZ70, or HSZ80
subsystem.

For instructions on upgrading a single-controller configuration
to a dual-redundant controller configuration, refer to the
appropriate array controller user guide or maintenance and
service guide.

ECB replacement procedures provided in this card include:

• HSZ70 Single-Controller Configurations, page 3

• HSZ70 Dual-Redundant Controller Configurations, page 3

• HSG60 and HSG80 Controller Configurations, page 4

• HSJ80 Controller Configurations, page 5

• HSZ80 Controller Configurations, page 6

• Hot-Pluggable Procedure for StorageWorks Model 2100

and 2200 Enclosures, page 6

General Information

The type of ECB used depends on the StorageWorks controller
enclosure type.

WARNING: The ECB is a sealed, rechargeable, lead acid
battery that must be recycled or disposed of properly
according to local regulations or policies after replacement.
Do not incinerate the battery. Improper handling may cause
personal injury. The ECB displays the following label:

© 2002 Compaq Information Technologies Group, L.P.
Compaq, the Compaq logo, and StorageWorks are trademarks of Compaq

Information Technologies Group, L.P.
All other product names mentioned herein may be trademarks of their

respective companies.
Compaq shall not be liable for technical or editorial errors or omissions

contained herein. The information is provided “as is” without warranty of
any kind and is subject to change without notice. The warranties for
Compaq products are set forth in the express limited warranty statements
accompanying such products. Nothing herein should be construed as
constituting an additional warranty.

Printed in the U.S.A.

Replacing an External Cache Battery (ECB)

Fifth Edition (May 2002)
Part Number: EK–80ECB–IM. E01

Compaq Computer Corporation

Figure 1 and Figure 2 provide general information about the

ECBs used with many StorageWorks controller enclosures.

.

1

SHUT OFF

S

T

A

T

U

S

2

POWER
CACHE

~

CXO5715B

1 Battery disable switch (SHUT

OFF)

2 Status LED

Figure 1: Single ECB for single-controller configurations

3 ECB Y-cable

3

.

1

SHUT OFF

S

T

A

T

U

CACHE
POWER

S

SHUT OFF

S

S

U

T

A

T

2

POWER
CACHE

4

3

~

CXO5713B

1 Battery disable switch (SHUT

OFF)

2 Status LED

Figure 2: Dual ECB for dual-redundant controller configurations

StorageWorks Model 2100 and 2200 controller enclosures use
a different type of ECB that does not require an ECB Y-cable
(see Figure 3). These enclosures contain four ECB bays. Two
bays support Cache A (bays A1 and A2) and two bays support
Cache B (bays B1 and B2)—see this relationship in Figure 4.

3 ECB Y-cable
4 Faceplate and controls for

second battery (dual ECB
configuration only)

.

4

21

3

CXO6864A

5

6

7 8

CXO5608B

1 B1 supports cache B
2 B2 supports cache B
3 A2 supports cache A
4 A1 supports cache A

5 Controller A
6 Controller B
7 Cache A
8 Cache B

Figure 4: ECB and cache module locations in a StorageWorks Model 2100 and 2200 enclosure

IMPORTANT: When replacing an ECB (see Figure 5), match the vacant ECB
bay with the supported cache module. This bay will always be next to the
failed ECB (see Figure 4).

NOTE: No more than two ECBs are supported within a StorageWorks Model
2100 or 2200 controller enclosure at any time—one for each array
controller and cache set. Blanks must be installed in the remaining vacant
ECB bays for controlling air flow.

.

1
2

3

1 ECB charged LED
2 ECB charging LED
3 ECB fault LED

CXO6358A

Figure 3: Status LEDs for a StorageWorks Model 2100 and 2200 enclosure ECB

CXO6922B

Figure 5: Removing an ECB that supports cache module B
in a StorageWorks Model 2100 and 2200 enclosure

Page 2

HSZ70 Single-Controller Configurations

Use the following steps and Figure 1 or Figure 2 to replace an
ECB:

1. Is the controller operating?

• Yes. Connect a PC or terminal to the controller
maintenance port supporting the old ECB cache
module.

• No. Go to step 3.

2. Shut down “this controller” with the following command:

SHUTDOWN THIS_CONTROLLER

NOTE: After the controller shuts down, the reset button 1 and the first
three port LEDs 2 turn O
minutes, depending on the amount of data that needs to be flushed
from the cache module.

Proceed only after the reset button stops F

1

123456

N (see Figure 6). This may take several

LASHING and remains ON.

2

8. Remove the old ECB and place the ECB in an antistatic bag
or on a grounded antistatic mat.

HSZ70 Dual-Redundant Controller Configurations

Use the following steps and Figure 1 or Figure 2 to replace an
ECB:

1. Connect a PC or terminal to the maintenance port of the
controller that has the operational ECB.

The controller connected to the PC or terminal becomes
“this controller”; the controller for the ECB being removed
becomes the “other controller.”

2. Enter the following commands:

CLEAR CLI
SHOW THIS_CONTROLLER

Is this controller “configured for MULTIBUS_FAILOVER
with...” mode?

• Yes. Go t o step 4.

• No. The controller is “configured for

DUAL_REDUNDANCY with...” in transparent failover
mode. Proceed to step 3.

CXO6991A

1 Reset button 2 First three port LEDs

Figure 6: Controller reset button and first three port LEDs

3. Turn OFF subsystem power.

NOTE: If an empty bay is not available, place the replacement ECB on
top of the enclosure.

4. Insert the replacement ECB into an appropriate bay or near
the ECB being removed.

CAUTION: The ECB Y-cable has a 12-volt and a 5-volt pin.
Improper handling or misalignment when connecting or
disconnecting could cause these pins to contact ground, resulting
in cache module damage.

5. Connect the open end of the ECB Y-cable to the
replacement ECB.

6. Turn O

N subsystem power.

The controller automatically restarts.

CAUTION: Do not disconnect the old ECB Y-cable until the
replacement ECB is fully charged. If the replacement ECB status
LED is:

• O

N, the ECB is fully charged.

• F

LASHING, the ECB is charging.

The subsystem can operate regardless of the old ECB status, but
do not disconnect the old ECB until the replacement ECB is fully
charged.

7. Once the replacement ECB status LED turns ON,
disconnect the ECB Y-cable from the old ECB.

NOTE: Step 3 is a procedural workaround for controllers in transparent

failover mode to make sure that the battery test in field replacement
utility (FRUTIL) executes properly.

3. Enter the following command:

RESTART OTHER_CONTROLLER

IMPORTANT: Wait until the following message is displayed before
proceeding:

“[DATE] [TIME]-- Other controller restarted”

4. Disable failover and take the controllers out of
dual-redundant configuration with one of the following
commands:

SET NOFAILOVER

or

SET NOMULTIBUS_FAILOVER

5. Start the FRUTIL with the following command:

RUN FRUTIL

6. Enter 3 for the replace the “other controller” cache module
battery option.

7. Enter Y(es) to confirm the intent to replace the ECB.

CAUTION: Do not disconnect the old ECB Y-cable until the
replacement ECB is fully charged. If the replacement ECB status
LED is:

• O

N, the ECB is fully charged.

• F

LASHING, the ECB is charging.

The subsystem can operate regardless of the old ECB status, but
do not disconnect the old ECB until the replacement ECB is fully
charged.

The ECB Y-cable has a 12-volt and a 5-volt pin. Improper handling
or misalignment when connecting or disconnecting might cause
these pins to contact ground, resulting in cache module damage.

Page 3