Datasheet
cooling modules, and Environmental
Service Module (ESM) interfaces. The
DS4000 EXP810 is available in a
19-inch rack-mount package.
Each ESM Customer Replacement Unit
(CRU) supports 2 Gbps/4 Gbps Fibre
Channel host connections. The DS4000
EXP810 ESM designs support a
4 Gbps Fibre Channel loop. Both
2 Gbps and 4 Gbps Fibre Channel disk
drives are supported. A switch on the
front of the DS4000 EXP810 enclosure
selects the speed of the entire enclo-
sure—either 2 Gbps or 4 Gbps, but not
both at the same time.
Leveraging DS4000 Series capabilities
The DS4700 Express is part of the
DS4000 Series, which uses common
storage management software and
expansion enclosures. The DS4700
Express can also be used with the
DS4000 EXP810 Storage Expansion
Unit to take advantage of using Fibre
Channel technology.
Scalability throughout the DS4000 Series
Because the DS4700 Express is
designed to be highly scalable—up to
112 Fibre Channel or SATA disk
drives—it can be upgraded from a
workgroup SAN to an enterprise net-
work storage system, thereby helping
provide flexibility to grow with your busi-
ness. In addition, by using
IBM System Storage DS4000 Storage
Manager software, multiple DS4700
Expresses can be combined to help
address additional performance and
capacity requirements—further enhanc-
ing your scalability options.
Another scalability feature of the
DS4700 Express is Dynamic Capacity
Expansion (DCE), which is designed to
provide the ability to add DS4000
EXP810 enclosures to an existing
DS4700 Express while avoiding the
The DS4700 Express features support
the consolidation of direct-attached
storage into a centrally managed,
shared or storage area network (SAN)
environment. With built-in support for
eight Fibre Channel-attached servers,
the need for additional switches is
reduced or eliminated, helping to make
server clustering more cost-effective.
The 4 Gbps capable
IBM System Storage EXP810 Storage
Expansion Unit offers a new 16-bay
disk enclosure for attachment to
selected DS4000 Mid-range Disk
Systems, with up to 4.8 terabytes (TB)
physical capacity per expansion unit
using sixteen Fibre Channel 300GB disk
drives, or up to 8TB physical capacity
per expansion unit using sixteen SATA
500GB disk drives. The EXP810
Storage Expansion Unit is designed to
accommodate the new optional 2 Gbps
Fibre Channel Enhanced Disk Drive
Modules (E-DDM). The EXP810 con-
tains redundant (AC or DC) power and