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EK-70CAH-IN-A01

2000

2 pages

Original

31.6kB

Document:	Installing an HSZ70 Cache Module
Order Number:	EK-70CAH-IN
Revision:	A01
Pages:	2
Original Filename:

OCR Text

Installing an HSZ70 Cache Module
Follow these instructions to replace a cache module in a
single or dual-redundant configuration. See the HSZ70
Array Controller HSOF Version 7.0 Service Manual for
instructions on upgrading a subsystem to a
dual-redundant configuration.

Dual-Redundant Configurations

Figure 1. HSZ70 Cache Module
5

To remove the cache module...
1.

Connect a local terminal to the controller with the
operational cache module. The controller to which you’re
connected is “this controller;” you’re replacing the “other
controller’s” cache module.

Disable failover and take the controllers out of their dualredundant configuration with the following command:

SET NOFAILOVER

2
3 2x

1
2
3
4
5

Cache-memory power LED
External cache battery (ECB) cable
Retaining lever
Backplane connector
SIMM

Figure 2. Location of Cache Modules
Controller A
Controller B
Cache A

RUN FRUTIL

Choose option 1 from the FRUTIL Options menu to go to
the Removal Options menu.

Choose option 3 from the Removal Options menu to replace
the “other controller’s” cache module.

Confirm that you want to replace the cache module.

Disconnect the ECB cable from the cache module you’re
replacing.

Disengage the cache module’s two retaining levers and
remove it from the enclosure.

Cache B

VHDCI Cable Precautions
All of the cables to the controller, cache module, and ECB use
very-high density cable interconnect connectors (VHDCI). These
connectors have extraordinarily small mating surfaces that can be
adversely affected by dust and movement. Follow these
precautions when you’re connecting VHDCI cables:

Start FRUTIL, the field-replacement utility, with the
following command:

To install the new cache module...
1.

Disable the ECB to which you’re connecting the new cache
module by pressing its shut off button until the status light
stops blinking—about 2 seconds.

Clean the mating surfaces with a blast of clean air.

Mate the connectors by hand, then tighten the retaining
screws to 1.5 inch-pounds—approximately 1/4 additional
turn after the connectors have fully mated.

Connect the ECB cable to the new cache module by
following the VHDCI cable precautions.

Indicate to FRUTIL that you’re ready to insert the new cache
module.

Wait for FRUTIL to quiesce the ports.

Insert the new cache module into its slot. Engage its
retaining levers.

Wait for FRUTIL to terminate, then restart the “other

Test the assembly by gently pulling on the cable, which
should not produce visible separation.

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Copyright 1997 Digital Equipment Corporation
EK–70CAH–IN. A01

controller” with the following command:

Single Configurations

RESTART OTHER_CONTROLLER

Re-establish the dual-redundant configuration with the
following command:

To remove the failed cache module...
1.

From the host console, dismount the storage units in the
subsystem.

If the controller is operating, connect a local terminal to the
controller to obtain the last failure codes if desired.
Otherwise, go to step 8.

Start the Fault Management Utility (FMU) with the
following command:

SET FAILOVER COPY=THIS_CONTROLLER

This command copies the subsystem’s configuration from
the “this controller” to the “other controller.”
The ECB automatically re-enables itself to provide backup
power to the cache module.

RUN FMU

Display the instance and last failure codes with the following
command:
SHOW LAST_FAILURE ALL

Record the codes in the order they appear.

Exit FMU with the following command:
EXIT

Shut down the controller with the following command:
SHUTDOWN THIS_CONTROLLER

When the controller shuts down, its reset button and the first
three LEDs are lit continuously.
8.

Turn off the power to the subsystem.

Disconnect the ECB cable from the cache module.

10. Disable the ECB by pressing its shut off button until the
status light stops blinking—about 2 seconds.
11. Disengage the cache module’s two retaining levers and
remove it from the enclosure.
To install the new cache module...
1.

Insert the new cache module into its slot and engage its
retaining levers.

Connect the ECB cable to the new cache module.

Restore power to the subsystem. The controller
automatically restarts and the ECB automatically re-enables
itself to provide backup power to the cache module.

Mount the storage units on the host.