Task List; Prerequisites; Restarting A Base Unit - Hitachi AMS 2100 Hardware Manual

Task list

The process of applying power to the unit includes the following tasks:
• Ensure that all prerequisite tasks have been completed and that the
electrical and environmental operating requirements have been met.
See below and the specifications listed in the Hitachi AMS 2000 Family
Storage System Reference Guide.
• If the array includes expansion units or high-density expansion units,
ensure that they are connected to the base unit and any other
expansion units and that they are plugged in and operating (there are
no switches on expansion units).
NOTE: Expansion Unit Power. When the power supplies in the expansion
unit are plugged in, the power on self test (POST) starts immediately and
takes about 4 minutes to complete. When the test completes successfully,
the expansion unit is in standby mode until the main power switch on the
base unit is turned on. Power to the ENC unit and the drives is controlled
from the base unit via the ENC cable. If only one power supply is plugged
in, the fans in the other supply will run at high speed to ensure that the
expansion unit has sufficient cooling.

Prerequisites

Verify that the following prerequisites are met before turning on the Main
Switch on the AMS 2100/2300 base unit.
• Ensure that all prerequisites and requirements described in
Installation
units are installed meet the electrical requirements listed in
A, Specifications.
• Ensure that the circuit breakers or switches in the PDUs are turned on
and the PDUs are operational.
• Ensure that both power supplies on the base unit are plugged in and
operating. The fans on both power supplies should be running at low
speed.

Restarting a base unit

When a base unit is used as the remote unit in a TrueCopy remote
replication/TrueCopy Extended Distance configuration, restarting the base
unit can cause the following events:
• Both paths of TrueCopy remote replication/TrueCopy Extended Distance
are blocked.
• At the time the path is blocked, Navigator 2 sends a failure notice to
the users whose email addresses are configured in the Alerts and
Events window in Navigator 2. The alert contains information regarding
the Email Alert and SNMP Agent Support features and TRAP. Follow the
instructions in the email alert. After the remote unit has restarted, the
path blockade automatically recovers the paths that are available for
use.
• If the pair status of TrueCopy remote replication/TrueCopy Extended
Distance is PAIR or COPY, the pair status changes to PSUE.
6–2
have been met, and that the site and rack in which the
Power On/Off procedures
Hitachi AMS 2100/2300 Storage System Hardware Guide
Chapter 5,
Appendix