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Chapter 4: System overview
This chapter describes the components in the Hitachi NAS Platform server system for the
following models:
Hitachi NAS Platform, Model 3080
■
Hitachi NAS Platform, Model 3090
■
System components
The system contains many components and is housed in a rack or cabinet. This section
describes the main system components.
Component
Hitachi NAS
Platform or
Hitachi Unified
Storage File
Module server
System
management
unit (SMU)
Hitachi NAS Platform 3080 and 3090 G2 Hardware Reference
The system can contain a single server or several servers that operate
as a cluster. Clusters that use more than two servers include two 10
Gbps Ethernet switches. Hitachi supports two switches for
redundancy.
For information about the physical configuration of a cluster
configuration, see the Hitachi NAS Platform and Hitachi Unified Storage
File Module System Installation Guide .
Note: For additional data protection, it is recommended
to use an external UPS to power the server. Also, each of
the redundant power supplies in the server and in the
storage subsystems should be operated from a different
mains power circuit in order to provide a degree of
protection from mains power supply failures. In the event
that one circuit fails, the other will continue to power the
server and the storage subsystem.
A standalone server can operate without an external SMU, but all of
the cluster configurations require an external SMU.
The SMU is the management component for the other components
in a system. An SMU provides administration and monitoring tools. It
supports data migration and replication, and acts as a quorum device
in a cluster configuration. Although integral to the system, the SMU
does not move data between the network client and the servers.
Chapter 4: System overview
Description
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