Installing Enclosures
96-30065-001 Rev. A0
DataDirect Networks EF4024 FC RAID System Setup Guide | 18
Figure 10
shows the reverse cabling scheme. Controller module 0A is connected to
expansion module 1A, with a chain of connections cascading down (blue). Controller
module 0B is connected to the lower expansion module (3B), of the last expansion
enclosure, with connections moving in the opposite direction (green). Reverse cabling
allows any expansion enclosure to fail—or be removed—while maintaining access to other
enclosures.
2.3
Powering On and Powering Off
Note the following before powering on the enclosures for the
first
time:
• Install all disk drives in the enclosure so the controller can identify and configure them
at power-up
• Connect the power cords to the enclosures (as described in Section
2.3.1
)
• Generally, when powering up, make sure to power up the enclosures and associated
data host in the following order:
❖
Expansion enclosures
first
This ensures that the disks in the expansion enclosures have enough time to
completely spin up before being scanned by the controller modules within the
controller enclosure.
While enclosures power up, their LEDs blink. After the LEDs stop blinking—if no
LEDs on the front and back of the enclosure are amber—the power-on sequence is
complete, and no faults have been detected. See
Appendix A
for LED descriptions.
Figure 10. Connecting Three Expansion Enclosures (Reverse Cabling)
Controller
Enclosure 0
Expansion
Enclosure 1
Expansion
In
Out
Module 1A
Expansion
Module 1B
Controller
Module 0A
Controller
Module 0B
Expansion
Module 2A
Expansion
Module 2B
Expansion
Module 3A
Expansion
Module 3B
In
Out
In
Out
In
Out
In
Out
In
Out
Expansion
Enclosure 2
Expansion
Enclosure 3
Содержание EF4024 FC
Страница 1: ...EF4024 Setup Guide Document No 96 30065 001 Revision A0 Fibre Channel RAID System ...
Страница 21: ...96 30065 001 Rev A0 DataDirect Networks EF4024 FC RAID System Setup Guide 21 Chapter 3 3 0Connecting Hosts ...
Страница 29: ...96 30065 001 Rev A0 DataDirect Networks EF4024 FC RAID System Setup Guide 29 Chapter 4 4 0Basic Operation ...
Страница 31: ...96 30065 001 Rev A0 DataDirect Networks EF4024 FC RAID System Setup Guide 31 Chapter 5 5 0Troubleshooting ...
Страница 45: ...96 30065 001 Rev A0 DataDirect Networks EF4024 FC RAID System Setup Guide 45 Appendix A A 0 LED Descriptions ...
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