2. Wait for the storage system to complete its power-on self-test and boot-
up processes. Depending on the storage system configuration, this may
take several minutes.
3. When the READY LED is ON, the storage system boot up operations are
complete and the storage system is ready for use.
Note: If the ALARM LED is also on, or if the READY LED is not ON after 20
minutes, contact Technical Support for assistance.
Power off procedures
Prerequisites:
• Ensure that all software-specific shutdown procedures have been
completed. Refer to the applicable user manuals for details
• Ensure that the SVP mode is set to “View Only”.
• Ensure that all I/O activity to the storage system has stopped. You can
vary paths offline and shut down the attached hosts.
• Ensure that all users have logged off.
Follow this procedure exactly when powering the storage system off.
1. Wait for the storage system to complete its shutdown routines.
Depending on the storage system configuration and certain MODE
settings, it can take up to 20 minutes for the storage system to copy data
from cache to the disk drives and for the disk drives to spin down.
Note: If the READY LED does not turn OFF after 20 minutes, contact the
support center for assistance.
2. If the front bezel is installed, press the POWER OFF button. If the front
bezel is not installed, move the POWER ON/OFF switch to the OFF
position.
Emergency power off/on procedure
This section describes the procedures to follow to shut down the system in
case of emergency and how to bring the system back up after an emergency
shutdown.
Note: Quick Procedure
Controller: Power PDUs off first. Power PDUs on last.
Drives: Power PDUs off last. Power PDUs on first.
Emergency power off procedure
The HUS VM storage system does not have an emergency power off switch as
the USP V/VM storage system does.
Power On/Off procedures
5-5
Hitachi Unified Storage VM Block Module Hardware User Guide
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