Compaq Storageworks HSG80 User manual

© Digital Equipment Corporation 1999. All rights reserved. EK–80CAH–IN. D01/388623-001
COMPAQ and the Compaq logo Registered in the United States Patent and Trademark Office.
Windows NT® is a registered trademark of the Microsoft Corporation.
Installing an HSG80 or HSZ80 Cache Module
This document contains instructions to replace a cache module in either an HSG80 ACS Version 8.x Array Controller or an
HSZ80 ACS Version 8.x Array Controller. See the appropriate
HSG80 Array Controller ACS Version 8.x User’s Guide , HSZ80 Array
Controller ACS Version 8.x User’s Guide
, HSG80 Array Controller Version 8.x Maintenance and Service Guide , or HSZ80 Array
Controller ACS Version 8.x Maintenance and Service Guide
for instructions on upgrading a single-controller configuration to a
dual-redundant controller configuration.
Replacing a Cache Module
Use this procedure for the following configurations:
HSG80 ACS Version 8.x Single Controller
HSG80 ACS Version 8.0 Dual-Redundant Controller
HSZ80 ACS Version 8.x Single Controller
Use the following steps in “Removing a Cache Module” and
“Installing a Cache Module” to replace a cache module (see
Figure 1 and Figure 2).
Figure 1. HSG80 or HSZ80 Cache Module
Figure 2. Location of Cache Module
NOTE: The new cache module must contain the same memory
configuration as the existing cache module.
Removing a Cache Module
Use the following steps to remove a cache module:
1. From the host console, dismount the logical units in the
subsystem. If you are using a Windows NT®platform, shut
down the server.
2. If the controller is operating, connect a PC or terminal to the
controller’s maintenance port.
If the controller is not operating, go to step 5.
3. Run FMU to obtain the last failure codes, if desired.
4. Shut down the controllers. In single controller
configurations, shut down “this controller.” In dual-
redundant controller configurations, shut down the “other
controller” first, then shut down “this controller” with the
following commands:
SHUTDOWN OTHER_CONTROLLER
SHUTDOWN THIS_CONTROLLER
When the controllers shuts down, their reset button and the
first three LEDs are lit continuously. This may take several
minutes, depending on the amount of data that needs to be
flushed from the cache modules.
CAUTION: Electrostatic discharge (ESD) can easily damage a
cache module. Wear a snug-fitting, grounded ESD wrist strap.
5. Disable the ECB by pressing the battery disable switch until
the status light stops blinking—about five seconds.
CAUTION: The ECB must be disabled—the status light is not lit
and is not blinking—before disconnecting the ECB cable from
the cache module. Failure to disable the ECB could damage the
cache module.
6. Disconnect the ECB cable from the cache module.
➀Cache-memory power LED
➁External cache battery (ECB) cable
➂Retaining lever
➃Dual Inline Memory Module (DIMM)
➄Backplane connector
3
1
2
4
5
~
2x
CXO6465A
Controller A
Controller B
Cache module A Cache module B
EMU PVA
CXO6283A

2
7. Disengage both retaining levers and remove the cache
module. Place the cache module into an antistatic bag or
onto a grounded antistatic mat.
NOTE: Remove the DIMMs from the cache module. They will be
installed in the replacement cache module.
8. Press down on the DIMM retaining levers at either end of the
DIMM you want to remove.
9. Grasp the DIMM and gently remove it from the DIMM slot.
Repeat for all DIMMs.
Installing a Cache Module
Use the following steps to install a cache module:
CAUTION: ESD can easily damage a cache module. Wear an
snug-fitting, grounded ESD wrist strap.
Make sure you align the cache module in the appropriate guide
rails. If you do not align the cache module correctly, damage to
the backplane can occur.
1. Insert the DIMM straight into the socket of the cache module
and ensure that the notches in the DIMM align with the tabs
in the socket.
2. Press the DIMM gently until it’s seated in the socket.
3. Double-check to ensure both ends of the DIMM are firmly
seated in the slot and both retaining clips engage the DIMM.
4. Insert the new cache module into its slot and engage its
retaining levers.
CAUTION: The ECB must be disabled—the status light is not lit
and is not blinking—before connecting the ECB cable to the
cache module. Failure to disable the ECB could result in ECB
damage.
5. Connect the ECB cable to the new cache module.
6. If not already connected, connect a PC or terminal to the
controller’s maintenance port.
7. Restart the controller by pressing its reset button.
8. When the CLI prompt reappears, display details about the
controller you configured. Use the following command:
SHOW THIS_CONTROLLER FULL
9. Mount the logical units on the host. If you are using a
Windows NT platform, restart the server.
10. Set the subsystem date and time. In single controller
configurations, set “this controller.” In dual-redundant
controller configurations, set “this controller” and the “other
controller” with the following commands:
SET THIS_CONTROLLER TIME= dd-mmm-yyyy:hh:mm:ss
SET OTHER_CONTROLLER TIME= dd-mmm-yyyy:hh:mm:ss
11. Disconnect the PC or terminal from the controller’s
maintenance port.

3EK–80CAH–IN. D01/388623-001
Replacing a Cache Module
Use this procedure for the following configuration:
HSZ80 ACS Version 8.1 Dual-Redundant Controller
Use the following steps in “Removing a Cache Module” and
“Installing a Cache Module” to replace a cache module.
NOTE: The new cache module must contain the same amount
of memory as the module it’s replacing.
Removing a Cache Module
Use the following steps to remove a cache module:
1. Connect a PC or terminal to the operational controller’s
maintenance port. The controller to which you’re connected
is “this controller”; the controller whose cache module
you’re replacing is the “other controller.”
2. Disable failover and take the controllers out of their dual-
redundant configuration with the following command:
SET NOFAILOVER
3. Start FRUTIL with the following command:
RUN FRUTIL
4. Enter option 1, Replace or remove a controller or cache
module, from the FRUTIL Main menu:
FRUTIL Main Menu:
1. Replace or remove a controller or cache module
2. Install a controller or cache module
3. Replace other cache module battery
4. Replace a PVA module
5. Replace an I/O module
6. Set battery life to new
7. Exit
Enter choice: 1, 2, 3, 4, 5, 6, or 7 -> 1
5. Enter option 3, Other cache module, from the Replace or
Remove Options menu:
Replace or remove Options:
1. Other controller and cache module
2. Other controller module
3. Other cache module
4. Exit
Enter choice: 1, 2, 3, or 4 -> 3
6. Confirm that you want to remove the other cache module.
FRUTIL displays the following:
Remove the slot A [ or B ] cache module? Y/N
7. Enter Y(es) and press return.
8. Wait for FRUTIL to quiesce the device ports. After the ports
have been quiesced (this may take several minutes), FRUTIL
displays the following:
All device ports quiesced.
Remove the slot A [
or B ] cache module within x
minutes, xx seconds. Then disconnect the external
battery, if in use, from the cache module.
NOTE: A countdown timer allows a total of two minutes to
remove the cache module. If you exceed two minutes, “this
controller” will exit FRUTIL and resume operations.
CAUTION: ESD can easily damage a cache module. Wear a
snug-fitting, grounded ESD wrist strap.
9. Disengage both retaining levers and partially remove the
other cache module—about half way.
10. Disable the ECB by pressing the battery disable switch until
the status light stops blinking—about five seconds.
CAUTION: The ECB must be disabled—the status light is not lit
and is not blinking—before disconnecting the ECB cable from
the cache module. Failure to disable the ECB could result in
cache module damage.
11. Disconnect the ECB cable from the other cache module,
remove the cache module, and place it onto a grounded mat
or into an approved antistatic bag.
12. Once the cache module is removed, FRUTIL displays the
following:
Restarting all device ports. Please wait...
.
.
.
Do you have a replacement cache module? Y/N
NOTE: Remove the DIMMs from the cache module. They will be
installed in the replacement cache module.
13. Press down on the DIMM retaining levers at either end of the
DIMM you want to remove.
14. Grasp the DIMM and gently remove it from the DIMM slot.
Repeat for all DIMMs.
Installing a Cache Module
Use the following steps to install a cache module:
NOTE: If you selected Y(es) in step 12 of “Removing a Cache
Module,” go to step 5.
1. Connect a PC or terminal to the operational controller. The
controller to which you’re connected is “this controller;” the
controller whose cache module you’re installing is the “other
controller.”
2. Start FRUTIL with the following command:
RUN FRUTIL
3. Enter option 2,Installa controller or cache module, from the
FRUTIL Main menu:
FRUTIL Main Menu:
1. Replace or remove a controller or cache module
2. Install a controller or cache module
3. Replace other cache module battery

4
4. Replace a PVA module
5. Replace an I/O module
6. Set battery life to new
7. Exit
Enter choice: 1, 2, 3, 4, 5, 6, or 7 -> 2
4. Enter option 3, Other cache module, from the Install Options
menu:
Install Options:
1. Other controller and cache module
2. Other controller module
3. Other cache module
4. Exit
Enter choice: 1, 2, 3, or 4 -> 3
NOTE: Use the DIMMs that were removed from the old cache
module for the replacement cache module.
CAUTION: ESD can easily damage a cache module or a DIMM.
Wear an snug-fitting, grounded ESD wrist strap.
5. Insert the DIMM straight into the socket in the replacement
cache module and ensure that the notches in the DIMM align
with the tabs in the socket.
6. Press the DIMM gently until it’s seated in the socket.
7. Double-check to ensure both ends of the DIMM are firmly
seated in the slot and both retaining clips engage the DIMM.
Repeat for all DIMMs.
8. Confirm that you want to install the other cache module.
FRUTIL displays the following:
Insert the slot A [or B] cache module? Y/N
9. Enter Y(es) and press return.
10. Wait for FRUTIL to quiesce the ports. After the ports have
been quiesced (this may take several minutes), FRUTIL
displays the following:
All device ports quiesced.
NOTE: A countdown timer allows a total of two minutes to install
the cache module. If you exceed two minutes, “this controller”
will exit FRUTIL and resume operations.
CAUTION: Make sure you align the cache module in the
appropriate guide rails. If you do not align the cache module
correctly, damage to the backplane can occur.
11. If not already done, disable the ECB to which you’re
connecting the new cache module by pressing the battery
disable switch until the status light stops blinking—about
five seconds.
CAUTION: The ECB must be disabled—the status light is not lit
and is not blinking—before connecting the ECB cable to the
cache module. Failure to disable the ECB could result in ECB
damage.
12. Connect the ECB cable to the new cache module.
13. Insert the new cache module into its slot and engage its
retaining levers.
14. Enable failover, and reestablish the dual-redundant controller
configuration with the following command:
SET FAILOVER COPY=THIS_CONTROLLER
This command copies the subsystem’s configuration from
“this controller” to the “other controller.”
15. Disconnect the PC or terminal from the controller’s
maintenance port.

5EK–80CAH–IN. D01/388623-001
Replacing a Cache Module
Use this procedure for the following configurations:
HSG80 ACS Version 8.2 Dual-Redundant Controller
Use the following steps in “Removing a Cache Module” and
“Installing a Cache Module” to replace a cache module.
Removing a Cache Module
Use the following steps to remove a cache module:
1. Connect a PC or terminal to the operational controller’s
maintenance port. The controller to which you’re connected
is “this controller”; the controller whose cache module
you’re replacing is the “other controller.”
2. Disable failover with the following command:
SET NOFAILOVER
3. Remove the program card’s ESD cover and program card
from the “other controller.” Save them for reinstallation later.
4. Start FRUTIL with the following command:
RUN FRUTIL
FRUTIL displays the following:
Do you intend to replace this controller’s cache
battery? Y/N
5. Enter N(o). FRUTIL displays the FRUTIL Main menu:
FRUTIL Main Menu:
1. Replace or remove a controller or cache module
2. Install a controller or cache module
3. Replace a PVA module
4. Replace an I/O module
5. Exit
Enter choice: 1, 2, 3, 4, or 5 ->
6. Enter option 1, Replace or remove a controller or cache
module, from the FRUTIL Main menu. FRUTIL displays the
Replace or Remove Options menu:
Replace or remove Options:
1. Other controller and cache module
2. Other controller module
3. Other cache module
4. Exit
Enter choice: 1, 2, 3, or 4 ->
7. Enter option 3, Other cache module, from the Replace or
Remove Options menu. FRUTIL displays the following:
Slot Designations
(front view)
[ --- EMU --- ][ --- PVA --- ]
[ -------- Controller A ------- ]
[ -------- Controller B ------- ]
[ Cache Module A ][ Cache Module B ]
Remove the slot A [
or B ] cache module? Y/N
8. Enter Y(es) and press return. FRUTIL displays the
following:
Quiescing all device ports. Please wait...
Device Port 1 quiesced.
Device Port 2 quiesced.
Device Port 3 quiesced.
Device Port 4 quiesced.
Device Port 5 quiesced.
Device Port 6 quiesced.
All device ports quiesced.
Remove the slot A [
or B ] cache module within 2
minutes. Then disconnect the external battery from
the cache module.
CAUTION: The device ports must quiesce before removing the
cache module. Failure to allow the ports to quiesce may result
in data loss. Quiescing may take several minutes.
ESD can easily damage a cache module or a DIMM. Wear a
snug-fitting, grounded ESD wrist strap.
NOTE: A countdown timer allows a total of two minutes to
remove the cache module. If you exceed two minutes, “this
controller” will exit FRUTIL and resume operations.
9. Disengage both retaining levers and partially remove the
other cache module—about half way.
10. Disable the ECB by pressing the battery disable switch until
the status light stops blinking—about five seconds.
CAUTION: The ECB must be disabled—the status light is not lit
and is not blinking—before disconnecting the ECB cable from
the cache module. Failure to disable the ECB could result in
cache module damage.
11. Disconnect the ECB cable from the cache module, remove
the cache module, and place it onto a grounded antistatic mat
or into an antistatic bag.
Once the cache module is removed, FRUTIL displays the
following:
Restarting all device ports. Please wait...
Device Port 1 restarted.
Device Port 2 restarted.
Device Port 3 restarted.
Device Port 4 restarted.
Device Port 5 restarted.
Device Port 6 restarted.
Do you have a replacement cache module? Y/N
12. Enter N(o) if you don’t have a replacement cache module,
and disconnect the PC or terminal from the controller’s
maintenance port.
Enter Y(es) if you have a replacement cache module and
want to install it now. FRUTIL displays the following:
Insert the slot A [ or B ] cache module? Y/N

6
NOTE: Remove the DIMMs from the cache module. They will be
installed in the replacement cache module.
13. Press down onthe DIMM retaining levers at either end of the
DIMM you want to remove.
14. Grasp the DIMM and gently remove it from the DIMM slot.
Repeat for all DIMMs.
NOTE: If you entered Y(es) go to step 6 of “Installing a Cache
Module.”
Installing a Cache Module
Use the following steps to install a cache module:
CAUTION: ESD can easily damage a cache module or a DIMM.
Wear an snug-fitting, grounded ESD wrist strap.
1. Connect a PC or terminal to the operational controller. The
controller to which you’re connected is “this controller”; the
controller whose cache module you’re installing is the “other
controller.”
2. Start FRUTIL with the following command:
RUN FRUTIL
FRUTIL displays the following:
Do you intend to replace this controller’s cache
battery? Y/N
3. Enter N(o). FRUTIL displays the FRUTIL Main menu:
FRUTIL Main Menu:
1. Replace or remove a controller or cache module
2. Install a controller or cache module
3. Replace a PVA module
4. Replace an I/O module
5. Exit
Enter choice: 1, 2, 3, 4, or 5 ->
4. Enter option 2, Installa controller or cache module, from the
FRUTIL Main menu. FRUTIL displays the Install Options
menu:
Install Options:
1. Other controller and cache module
2. Other controller module
3. Other cache module
4. Exit
Enter choice: 1, 2, 3, or 4 ->
5. Enter option 3, Other cache module, from the Install Options
menu. FRUTIL displays the following:
Insert the slot A [ or B ] cache module? Y/N
NOTE: Use the DIMMs that were removed from the old cache
module for the replacement cache module.
6. Insert the DIMM straight into the socket in the replacement
cache module and ensure that the notches in the DIMM align
with the tabs in the socket.
7. Press the DIMM gently until it’s seated in the socket.
8. Double-check to ensure both ends of the DIMM are firmly
seated in the slot and both retaining clips engage the DIMM.
Repeat for all DIMMs.
9. Enter Y(es) and press return. FRUTIL displays the
following:
Quiescing all device ports. Please wait...
Device Port 1 quiesced.
Device Port 2 quiesced.
Device Port 3 quiesced.
Device Port 4 quiesced.
Device Port 5 quiesced.
Device Port 6 quiesced.
All device ports quiesced.
.
.
.
Perform the following steps:
1. Turn off the battery for the new cache module by
pressing the battery’s shut off button for five
seconds
2. Connect the battery to the new cache module.
3. Insert the new cache module in slot A [
or B ]
within 2 minutes.
NOTE: A countdown timer allows a total of two minutes to install
the cache module. If you exceed two minutes, “this controller”
will exit FRUTIL and resume operations.
CAUTION: Make sure you align the cache module in the
appropriate guide rails. If you do not align the cache module
correctly, damage to the backplane can occur.
10. Disable the ECB to which you’re connecting the new cache
module by pressing the battery disable switch until the status
light stops blinking—about five seconds.
CAUTION: The ECB must be disabled—the status light is not lit
and is not blinking—before connecting the ECB cable to the
cache module. Failure to disable the ECB could result in ECB
damage.
11. Connect the ECB cable to the new cache module.
12. Insert the new cache module into its slot and engage its
retaining levers.
NOTE: In mirrored mode, FRUTIL will initialize the mirrored
portion of the new cache module, check for old data on the
cache module, and then restart all device ports. After the device
ports have been restarted, FRUTIL will test the cache module
and the ECB. After the test completes, the device ports will
quiesce and a mirror copy of the cache module data will be
created on the newly installed cache module.

7EK–80CAH–IN. D01/388623-001
FRUTIL displays the following:
The configuration has two controllers.
To restart the other controller:
1. Type ’restart other_controller’.
2. Press and hold the reset button while inserting
the program card on the slot A [
or B ] controller,
then release the reset button.
The controller will restart.
Field Replacement Utility terminated.
13. To allows the “othercontroller” to restart, enter the following
command:
RESTART OTHER _CONTROLLER
14. Hold the reset button while inserting the program card into
the controller. Release the reset button and replace the ESD
cover. The controller will restart.
15. Enable failover, and re-establish the dual-redundant
controller configuration with the following command:
SET FAILOVER COPY=THIS_CONTROLLER
This command copies the subsystem’s configuration from
“this controller” to the “other controller.”
16. Disconnect the PC or terminal from the controller’s
maintenance port.

8
Replacing a Cache Module
Use this procedure for the following configurations:
HSG80 ACS Version 8.3 Dual-Redundant Controller
HSG80 ACS Version 8.4 Dual-Redundant Controller
HSZ80 ACS Version 8.3 Dual-Redundant Controller
Use the following steps in “Removing a Cache Module” and
“Installing a Cache Module” to replace a cache module.
Removing a Cache Module
Use the following steps to remove a cache module:
1. Connect a PC or terminal to the operational controller’s
maintenance port. The controller to which you’re connected
is “this controller”; the controller whose cache module
you’re replacing is the “other controller.”
2. Disable failover and take the controllers out of their dual-
redundant configuration with the following command:
SET NOFAILOVER
3. Start FRUTIL with the following command:
RUN FRUTIL
FRUTIL displays the following:
Do you intend to replace this controller’s cache
battery? Y/N
4. Enter N(o). FRUTIL displays the FRUTIL Main menu:
FRUTIL Main Menu:
1. Replace or remove a controller or cache module
2. Install a controller or cache module
3. Replace a PVA module
4. Replace an I/O module
5. Exit
Enter choice: 1, 2, 3, 4, or 5 ->
5. Enter option 1, Replace or remove a controller or cache
module, from the FRUTIL Main menu. FRUTIL displays the
Replace or Remove Options menu:
Replace or remove Options:
1. Other controller and cache module
2. Other controller module
3. Other cache module
4. Exit
Enter choice: 1, 2, 3, or 4 ->
6. Enter option 3, Other cache module, from the Replace or
Remove Options menu. FRUTIL displays the following:
Slot Designations
(front view)
[ --- EMU --- ][ --- PVA --- ]
[ -------- Controller A ------- ]
[ -------- Controller B ------- ]
[ Cache Module A ][ Cache Module B ]
Remove the slot A [
or B ] cache module? Y/N
7. Enter Y(es) and press return. FRUTIL displays the
following:
Quiescing all device ports. Please wait...
Device Port 1 quiesced.
Device Port 2 quiesced.
Device Port 3 quiesced.
Device Port 4 quiesced.
Device Port 5 quiesced.
Device Port 6 quiesced.
All device ports quiesced.
Remove the slot A [
or B ] cache module within 2
minutes. Then disconnect the external battery from
the cache module.
CAUTION: The device ports must quiesce before removing the
cache module. Failure to allow the ports to quiesce may result
in data loss. Quiescing may take several minutes.
ESD can easily damage a cache module or a DIMM. Wear a
snug-fitting, grounded ESD wrist strap.
NOTE: A countdown timer allows a total of two minutes to
remove the cache module. If you exceed two minutes, “this
controller” will exit FRUTIL and resume operations.
8. Disengage both retaining levers and partially remove the
other cache module—about half way.
9. Disable the ECB by pressing the battery disable switch until
the status light stops blinking—about five seconds.
CAUTION: The ECB must be disabled—the status light is not lit
and is not blinking—before disconnecting the ECB cable from
the cache module. Failure to disable the ECB could result in
cache module damage.
10. Disconnect the ECB cable from the cache module, remove
the cache module, and place it onto a grounded antistatic mat
or into an antistatic bag.
Once the cache module is removed, FRUTIL displays the
following:
Restarting all device ports. Please wait...
Device Port 1 restarted.
Device Port 2 restarted.
Device Port 3 restarted.
Device Port 4 restarted.
Device Port 5 restarted.
Device Port 6 restarted.
Do you have a replacement cache module? Y/N
11. Enter N(o) if you don’t have a replacement cache module,
and disconnect the PC or terminal from the controller’s
maintenance port. FRUTIL will exit.
Enter Y(es) if you have a replacement cache module and
want to install it now. FRUTIL displays the following:
Insert the slot A [ or B ] cache module? Y/N
NOTE: Remove the DIMMs from the cache module. They will be
installed in the replacement cache module.

9EK–80CAH–IN. D01/388623-001
12. Press down onthe DIMM retaining levers at either end of the
DIMM you want to remove.
13. Grasp the DIMM and gently remove it from the DIMM slot.
Repeat for all DIMMs.
NOTE: If you entered Y(es) go to step 9 of “Installing a Cache
Module.”
Installing a Cache Module
Use the following steps to install a cache module:
CAUTION: ESD can easily damage a cache module or a DIMM.
Wear an snug-fitting, grounded ESD wrist strap.
1. Connect a PC or terminal to the operational controller. The
controller to which you’re connected is “this controller”; the
controller whose cache module you’re installing is the “other
controller.”
2. Start FRUTIL with the following command:
RUN FRUTIL
FRUTIL displays the following:
Do you intend to replace this controller’s cache
battery? Y/N
3. Enter N(o). FRUTIL displays the FRUTIL Main menu:
FRUTIL Main Menu:
1. Replace or remove a controller or cache module
2. Install a controller or cache module
3. Replace a PVA module
4. Replace an I/O module
5. Exit
Enter choice: 1, 2, 3, 4, or 5 ->
4. Enter option 2, Installa controller or cache module, from the
FRUTIL Main menu. FRUTIL displays the Install Options
menu:
Install Options:
1. Other controller and cache module
2. Other controller module
3. Other cache module
4. Exit
Enter choice: 1, 2, 3, or 4 ->
5. Enter option 3, Other cache module, from the Install Options
menu. FRUTIL displays the following:
Insert the slot A [ or B ] cache module? Y/N
NOTE: Use the DIMMs that were removed from the old cache
module for the replacement cache module.
6. Insert the DIMM straight into the socket in the replacement
cache module and ensure that the notches in the DIMM align
with the tabs in the socket.
7. Press the DIMM gently until it’s seated in the socket.
8. Double-check to ensure both ends of the DIMM are firmly
seated in the slot and both retaining clips engage the DIMM.
Repeat for all DIMMs.
9. Enter Y(es) and press return. FRUTIL displays the
following:
Quiescing all device ports. Please wait...
Device Port 1 quiesced.
Device Port 2 quiesced.
Device Port 3 quiesced.
Device Port 4 quiesced.
Device Port 5 quiesced.
Device Port 6 quiesced.
All device ports quiesced.
.
.
.
Perform the following steps:
1. Turn off the battery for the new cache module by
pressing the battery’s shut off button for five
seconds
2. Connect the battery to the new cache module.
3. Insert the new cache module in slot A [
or B ]
within 2 minutes.
NOTE: A countdown timer allows a total of two minutes to install
the cache module. If you exceed two minutes, “this controller”
will exit FRUTIL and resume operations.
CAUTION: Make sure you align the cache module in the
appropriate guide rails. If you do not align the cache module
correctly, damage to the backplane can occur.
10. Disable the ECB to which you’re connecting the new cache
module by pressing the battery disable switch until the status
light stops blinking—about five seconds.
CAUTION: The ECB must be disabled—the status light is not lit
and is not blinking—before connecting the ECB cable to the
cache module. Failure to disable the ECB could result in ECB
damage.
11. Connect the ECB cable to the new cache module.
12. Insert the new cache module into its slot and engage its
retaining levers.
NOTE: In mirrored mode, FRUTIL will initialize the mirrored
portion of the new cache module, check for old data on the
cache module, and then restart all device ports. After the device
ports have been restarted, FRUTIL will test the cache module
and the ECB. After the test completes, the device ports will
quiesce and a mirror copy of the cache module data will be
created on the newly installed cache module.
13. FRUTIL will restart the other controller. FRUTIL displays
the following:
Please wait . . .
If the other controller did not restart, press its
reset button.
Field Replacement Utility terminated.

10
14. If the other controller did not restart, press its reset button.
15. Enable failover, and re-establish the dual-redundant
controller configuration with the following command:
SET FAILOVER COPY=THIS_CONTROLLER
This command copies the subsystem’s configuration from
“this controller” to the “other controller.”
16. Disconnect the PC or terminal from the controller’s
maintenance port.