Ds4300 Dual-Controller Storage Subsystem (Model 60U And 60X) Back View; Ds4300 Single-Controller Storage Subsystem (Model 6Lu And 6Lx) Back View - IBM TotalStorage DS4300 Installation, User's, And Maintenance Manual

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Hot-swap fan bays
Figure 2. DS4300 dual-controller storage subsystem (model 60U and 60X) back view
Figure 3 shows the components at the back of the DS4300 single-controller storage
subsystem (model 6LU and 6LX).
Hot-swap fan
Power Supply
Figure 3. DS4300 single-controller storage subsystem (model 6LU and 6LX) back view
Note: The graphics used in this document are for illustrative purposes only. The
appearance of the actual device may differ from the graphic.
RAID controller
Each RAID controller contains three ports for SFP modules that connect to
the fibre channel cables. Two of the ports, which are labeled Host 1 and
Host 2, are used to connect to host servers. The third port, which is labeled
Expansion and is available on the DS4300 model 60U and 60X controllers
only, is used to connect additional expansion units to the storage
subsystem.
Each RAID controller also contains a battery to maintain cache data in the
event of a power failure. For more information, see "Cache memory and
RAID controller battery" on page 101.
Note: The DS4300 single-controller storage subsystem (model 6LU and
6LX) contains only one RAID controller. You must keep the second
controller bay cover on to maintain proper cooling.
Raid controllers
Hot-swap
power supplies
RAID Controller
Hot-swap fan
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Chapter 1. Introduction