IBM TotalStorage DS4300 Turbo, Installation And User Manual

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Direct-management method:
This method uses Ethernet connections from a management station to each
controller. You must install at least one management station. The management
station can be the host or a workstation on the Ethernet network. A management
station will have the client software installed. Attach Ethernet cables to each
management station (one pair per storage server). You will connect the cables to
each controller later when you install the storage server. Figure 20 shows the direct
management method.
Ethernet
Host computer
Controller
Controller
Controller
Controller
Fibre Channel
I/O path
Management station
Note: The client software is
installed on one or more
management systems,
or on the host computer.
Storage subsystems
Fibre Channel connections
DS4300 Fibre Channel connections consist of two host Fibre Channel loops and up
to one drive Fibre Channel loop, depending on the storage server model. These
Fibre Channel connections are made through three SFP ports, which are labeled
“Host 1,” “Host 2,” and “Expansion.”
Exception: The DS4300 single-controller storage server (Model 6LU/6LX) does not
support drive loops or storage expansion enclosures.
The host Fibre Channel loop provides the fibre path for host attachment. It can
consist of Fibre Channel cables, SFPs, host bus adapters, Fibre Channel switches,
and RAID controllers. The expansion drive (or storage expansion enclosure) Fibre
Channel loop provides the fibre path to the hard disk drives (HDDs) that are outside
Figure 20. Direct-managed storage subsystems
Chapter 2. Installing and configuring the storage server
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