2
Chapter 1 Introduction
1.2
Features and Benefits
High-performance, low-latency iSCSI storage system, with a highly integrated
multifunction ASIC for fully featured, integrated storage virtualization
Modular design with the ability to add hot-swappable DSN-4000 expansion arrays for up
to 80 drives, with each drive having a maximum storage capacity of up to 2TB
Easy setup and configuration – can be installed anywhere on a 1-Gigabit Ethernet
network for improved access to critical information
In-band or out-of-band management via direct connection or the Web
Delivers Ethernet economics to storage for lower total cost of ownership and rapid
deployment using known and trusted technologies
Proven transport infrastructure for increased reliability, investment protection, and
reduced training and administrative costs
Scalability over long distances - ideal for remote data replication and disaster recovery
High availability - redundant cooling fans and 2 redundant, hot-swappable, auto-sensing,
load-sharing power supplies
Intelligent battery pack ensures that a charged battery is on hand to preserve buffer
cache contents if a power failure occurs. Contents are backed up for approximately 72
hours with the standard 2GB data cache (48 hours with the 4GB data cache option).
1.3
System Overview
Figure 1-1 shows a typical DSN-4X00 storage system configuration in a Storage Area Network
(SAN). The SAN shown is an Ethernet network used solely for exchanging data between the
customer's host servers and the DSN-4000 series array. The Ethernet bandwidth used by the
servers exchanging data with the storage system can be very high. Using a separate
Ethernet to act as a SAN keeps that data from interfering with the customer's existing LAN
and improves security.
Figure 1-1. Example of a DSN-4000 Series Storage System Configuration
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