Datasheet
connectors. The DS4000 EXP420 ESM
designs will support a 4 Gbps Fibre
Channel loop. The 500GB SATA ll drive
is a 3 Gbps drive that supports capabil-
ity to run at 4 Gbps connections
speeds through the use of an interface
card
Part of the DS4000 Series
The DS4200 is part of the DS4000
series, which uses common storage
management software and expansion
enclosures. The DS4200 can be used
with the DS4000 EXP420 Expansion
Unit utilizing Fibre Channel technology.
500GB SATA disk drives are supported,
helping to address the requirements of
various fixed content and data refer-
ence applications, which require large
amounts of storage capacity but do not
have the high utilization and access
characteristics satisfied by Fibre
Channel disk drives.
Scalability throughout the series
Because the DS4200 is highly scala-
ble—supporting up to 112 Serial ATA
disk drives—it can be upgraded from a
workgroup SAN to an enterprise net-
work storage system, offering extraordi-
nary flexibility to grow with your
business. In addition, by using the
IBM System Storage DS4000 Storage
Manager software, multiple DS4200s
can be combined to help address addi-
tional performance and capacity
requirements—further enhancing your
scalability options.
Another scalability feature of the
DS4200 is Dynamic Capacity
Expansion (DCE), which is designed to
provide the ability to add DS4000
EXP420 storage expansion units to an
existing DS4200 without stopping oper-
ations. By adding these enclosures, the
DS4200 can help bring unused storage
online for a new host group or an exist-
ing volume to provide additional capac-
ity on demand.
The DS4200 also supports online con-
troller firmware upgrades to help pro-
vide better performance and
functionality. Events such as upgrades
to support the latest version of DS4000
Storage Manager or to add services
such as DS4000 Service Alert or
DS4000 Alert Manager can often be
executed without stopping operations.
Centralized administration through DS4000
Storage Manager
The System Storage DS4000 Storage
Manager software included with the
DS4200 is designed to support central-
ized management of all local and net-
worked DS4000 series systems.
demands increase. Autonomic features
such as online firmware upgrades and
DS4000 Service Alert also help
enhance the system’s usability.
The DS4200 is designed to help con-
solidate direct-attached storage into a
centrally managed, shared or storage
area network (SAN) environment. With
built-in support for four Fibre Channel-
attached servers, the need for addi-
tional switches is reduced or eliminated,
helping to make server clustering more
cost-effective.
The 4 Gbps-ready IBM System Storage
EXP420 Storage Expansion Unit offers
a new 16-bay disk enclosure for attach-
ment to the DS4200, with up to 8 ter-
abytes (TB) physical capacity per
expansion unit using sixteen 500GB
disk drives. The EXP420 Storage
Expansion Unit is designed to accom-
modate the new 4 Gbps capable
500GB SATA Enhanced Value Disk
Drive Modules (EV-DDMs) and contains
redundant (AC or DC) power and cool-
ing modules and ESM interfaces. The
DS4000 EXP420 is available in a
19-inch rack mount package.
Each ESM CRU contains two 4 Gbps
Fibre Channel host connections utilizing
Small Form Factor Pluggable (SFP)