IBM System Storage DS4000, Hardware Maintenance Manual, Page: 91 / 184

DS4300 dual-controller storage server (models 60U and 60X)
The DS4300 dual-controller storage server (models 60U and 60X) comes
with two RAID controllers, two power supplies, and two cooling units and
provides dual, redundant controllers, redundant cooling, redundant power,
and battery backup of the RAID controller cache.
The DS4300 model 60U and 60X storage server is designed to provide
maximum host- and drive-side redundancy. Each RAID controller supports
direct attachment of one host that contains one or two host adapters. By
using external managed hubs and switches in conjunction with the storage
server, you can build even larger configurations. (Throughout this
document, the use of hub or external hub refers to a managed hub.)
Note: You must make fibre channel connections to both DS4300 controller
blades on the DS4300 model 60U and 60X to ensure full host-side
redundancy.
DS4300 dual-controller storage server (models 60U and 60X) with the Turbo
option The Turbo option consists of:
v Two 1-GB cache RAID controllers
v
Storage Manager and firmware at 8.4 level
v
License for connecting up to seven DS4000 EXP700 expansion units
DS4300 single-controller storage server (models 6LU and 6LX)
The DS4300 storage server Type 1722 Models 6LU and 6LX comes with one
RAID controller, one power supply, and one cooling unit to provide
efficient storage and retrieval capabilities.
DS4300 supports up to fourteen internal disk drive modules, supporting over 2 TB
of storage capacity when using 146-GB drives. You can add additional storage to
the DS4300 with up to seven DS4000 EXP700 expansion units using optional
EXP700 Attachment features, as described in Table 28.
The following list indicates the number of expansion units that each type of the
DS4300 supports:
DS4300 model 6LU and 6LX
No expansion units
DS4300 model 60U and 60X
Three expansion units
DS4300 model 60U and 60X Turbo
Seven expansion units
Table 28. Additional storage features available for the DS4300 storage servers
Expansion units Number of drives Feature number Part number
Two EXP700
expansion units
15 to 42 drives 7360 24P8066
First additional
EXP700 expansion
unit
15 to 28 drives 7361 24P8169
Second additional
EXP700 expansion
unit
29 to 42 drives, can
be purchased only
after Feature number
7361
7362 24P8151
Chapter 9. Type 1722 DS4300 Storage Server
63