Overview: Cabling a DS4500 with four drive mini hubs
Review the following information carefully and then continue to “Configuring the drive loops” on page 10 perform the
Figure 5 on page 7 shows a storage subsystem containing one DS4500 Storage Subsystem and two redundant drive loops with four storage expansion enclosures each. The DS4500 configuration shown requires four drive mini hubs to be installed. Each storage expansion enclosure group uses redundant drive loops to connect to the DS4500 Storage Subsystem. Loop A and loop B make up one redundant pair of drive loops, which is labeled “Storage Expansion Enclosures - Group 1.”. Loop C and loop D make up a second redundant pair, which is labeled “Storage Expansion Enclosures - Group 2.”
Attention: To prevent loss of storage expansion enclosure redundancy in a DS4500 Storage Subsystem configuration with four drive mini hubs installed, connect the storage expansion enclosures as shown in Figure 5 on page 7. Note especially that drive loop B connects to mini hub 2 and drive loop C connects to mini hub 3.
Note: The illustrations in this document might differ slightly from the hardware.
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