IBM TotalStorage DS4400, Руководство пользователя

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fiber-optic host and drive interface cables to the DS4000 Storage Server. (The
standard DS4400 configuration includes two host and two drive mini-hubs.)
v Power supplies - Two removable units that each contain a power supply and an
indicator light.
v Fan and communications module - A removable unit that contains the power
supply cooling fans, an indicator light, and Ethernet ports.
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Host mini hubs Drive mini hubs
Fan and communications
module
Power supply Power supply
Fibre Channel connections
When fully configured, the back of the DS4400 Storage Server can accommodate
up to four host-side and four drive-side mini-hubs. Each mini-hub is a single,
removable unit that provides the Fibre Channel interface between a DS4400
Storage Server, host computers, and drives. Each mini-hub has two SFP module
ports. An SFP module is inserted into a mini-hub port. Figure 5 shows the Fibre
Channel components.
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b/s 1 G
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Mini hub
Host mini-hub
ports
SFP module
SFP module
Fiber-optic
interface cable
Drive mini-hub
ports
Figure 4. IBM TotalStorage DS4400 Fibre Channel Storage Server - back view
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IBM TotalStorage DS4400 Fibre Channel Storage Server: User’s Guide