IBM TotalStorage FAStT700, Руководство пользователя

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Drive interface ports
The FAStT700 Storage Server comes with drive-side mini hubs 1 and 2 installed.
Each drive mini hub connects to Controller A and Controller B and represents a
single drive loop. The drive loops must be set up in pairs to support redundant drive
loop configurations (two data paths per drive enclosure). Each pair supports up to
11 drive enclosures, containing 10 drives each, or a maximum of 110 drives. See
Figure 18.
A fully configured FAStT700 Storage Server supports a maximum of 22 drive
enclosures (11 drive enclosures per drive-loop pair), or 220 drives (for Machine type
3560) using four drive loops.
Important: These large configurations are for capacity purposes and might not
provide the best performance. FAStT700 Storage Servers use only redundant
drive-loop configurations.
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Drive
mini-hub
ports
Drive C and D for
redundant loop 2
Drive A and B for
redundant loop 1
4 3 2 1
Use one port on each
mini hub to connect
a drive loop cable
Leave one port unoccupied
for future upgrades
Ethernet interface ports
There are two Ethernet interface ports, one for each controller (Controller A and
Controller B). Use the Ethernet ports to directly manage storage subsystems.
Figure 19 on page 14 shows the location of the interface ports.
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Ethernet ports
Controller A Ethernet port
Controller B Ethernet port
Figure 18. Drive-side mini-hub interface ports
Chapter 1. Introduction
13