Nondisruptive Service And Upgrades; High Temperature Mode - Hitachi G1000 Hardware Manual

Nondisruptive service and upgrades

The storage system is designed so that service and upgrades can be
performed without interrupting normal operations.
• Main components can be "hot-swapped" (added, removed, or replaced
without disruption) during normal operation. These include every module
in the controller chassis and the drive chassis, such as power supplies,
virtual storage directors, front-end directors, and back-end directors,
cache and cache backup modules, SVPs, and drives.
• A service processor (SVP) mounted in the controller chassis monitors the
operating condition of the storage system. Connecting the SVP with a
service center allows authorized service personnel to manage the system
remotely.
• Online non-disruptive upgrade of the Storage Virtualization Operating
Systems (SVOS) can be performed during normal operation without
shutting down or rebooting the storage system.
• Optional Hitachi Command Suite Migration Enablement Service (includes
pilot migration) is available to jump-start self-service migration. For
complex, large-scale, heterogeneous and remote replication data center
environments, nondisruptive migration service from Hitachi Global Solution
Services (GSS) are required. Contact your HDS authorized sales or service
representative for more information.

High temperature mode

High temperature mode is a feature that allows the storage system to
operate at standard temperature (60.8°F to 89.6°F / 16°C to 32°C) or higher
temperatures (60.8°F to 104°F / 16°C to 40°C), saving energy and cooling
costs. Temperature sensors at the air inlets in the primary microprocessor
blades measure the ambient air temperature.
High temperature mode window
High temperature mode is set through the Edit High Temperature Mode
window in the Device Manager - Storage Navigator GUI. The window also
displays alerts when the ambient air temperature exceeds the preset limits.
• In standard temperature mode, a temperature alert (SIM) appears when
the temperature in the storage system exceeds 89.6°F / 32°C.
• In high temperature mode, the temperature alert (SIM) appears when the
temperature in the storage system exceeds 104°F / 40°C.
System life
The lifetime of the system is five years when operating in the standard
temperature mode. This lifetime is reduced when operating the system in
high temperature mode, even if you change the system to standard
temperature mode later.
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide
Introduction 19