Replacing An Enc Cable; Tools Needed; Before You Begin - Hitachi AMS 2000 Series Service Manual

1. Wait at least 20 second before installing the new ENC unit. If the ENC
Unit is inserted without waiting at least 20 seconds, the ENC unit
encounter an unrecoverable failure.
2. Slide the new ENC unit partway into the slot in the expansion unit or
modular 2U SAS expansion unit. Make sure that the connectors on the
ENC unit do not plug in to the expansion unit or modular 2U SAS
expansion unit.
3. Connect the ENC cables to the ENC unit.
4. Push the blue lock button on the end of the lock lever and unlock it.
5. Open the lock lever far enough so that the tab on the lock lever can be
inserted into the slot in the frame of the expansion unit when you slide
the ENC unit into the expansion unit.
6. When the tab on the lock lever is engaged in the slot, push the lock lever
closed until you hear the lock button click. This pulls the ENC unit all the
way into the expansion unit and plugs it in to the connector.
7. Verify the Alarm LED on the new ENC unit and the Warning LED on the
front of the expansion unit are OFF. If the Warning LED is blinking slowly,
view the Alerts window in Navigator 2 and follow the instructions there
to recover the ENC unit. All you may need to do is unplug the ENC unit
by sliding it part way out of the expansion unit, wait at least 20 seconds,
and install it again.

Replacing an ENC cable

This procedure describes how to replace an ENC cable from a base unit to
an expansion unit and from one expansion array to another.

Tools needed

None.

Before you begin

1. Verify the following conditions before replacing an ENC cable:
• The base unit controller firmware is NOT being uploaded or
updated.
• No other parts except an ENC unit have failed and/or are being
replaced at the same time.
• No failures are listed in the Navigator 2 Alerts window except
possibly one for an ENC unit.
• If the power saving storage feature is installed on the array, the
disk drives are not in the process of spinning up.
2. Note the LED status on the front of both the base and expansion units
before replacing parts. See Chapter 4 in the Hitachi AMS 2000 Family
Storage System Hardware Guide for a description of the LEDs and their
functions. Verify the following conditions:
• No Alarm LEDS are ON anywhere on the base or expansion units,
except possibly the Alarm LED on an ENC unit.
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Replacing parts
Hitachi AMS 2000 Family Storage System Service Guide