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Chapter
1:
Hitachi Virtual Storage Platform G800
hardware overview
The Hitachi Virtual Storage Platform G800 is a modular, rack-mountable storage system,
with various fixed storage capacity configurations of FMD DC2 flash storage devices. To
deliver consistent low latency host response times and highest IOP performance across
all host connection ports, hard-disk drives are supported in an all-flash configuration.
The storage system contain dual controllers, each controller contains its own processor,
dual in-line cache memory modules (DIMMs), cache flash memory (CFM), battery, fans
and iSCSI and Fibre Channel I/O modules. Each controller also has an Ethernet
connection for out-of-band management. If the data path through one controller fails, all
data drives remain available to data hosts using a redundant data path through the
other controller.
The storage system can be equipped with embedded network-attached storage (NAS)
modules. The NAS modules provide file access through CIFS and NFS protocols and block
access by using iSCSI protocols.
All storage system models allow defective drives to be replaced without the interruption
of data availability to hosts. A hot spare drive can be configured to replace a failed drive
automatically, securing the fault-tolerant integrity of the logical drives. Self-contained,
hardware-based RAID logical drives provide maximum performance in compact external
enclosures.
Essential hardware components are implemented with a redundant configuration so that
the storage system can remain operational if a component fails. Adding and replacing
components, along with firmware upgrades, can be conducted while the storage system
is active.
Block configuration
A storage system configured for block-level storage provides the ability to access and
provision raw storage volumes using protocols such as Fibre Channel and iSCSI.
A block configuration consists of the following:
■
Two controllers
■
One or more drive trays
■
Service processor server (SVP)
Chapter 1: Hitachi Virtual Storage Platform G800 hardware overview
Hitachi Virtual Storage Platform G800 Hardware Reference Guide
12