Redundant Disk Connections - HP StorageWorks 2500 User Manual

CAUTION:
Keep the loops completely separate to ensure that the failure of a single component (I/O module,
transceiver, or cable) does not stop data transmissions to active drives.
1 2
1. FC loop B
2. I/O module B
3. FC disks (3 are shown, but up to 14 disks are supported in each DS2500)
Figure 4 Redundant disk connections
The operation and function of both I/O modules are identical. Each I/O module has two ports that
can transmit and receive data for bidirectional operation. Port use and connections are configuration
dependent (see "Cables and
number, and its status is displayed on an LED
the top loop port.
• Port 2 LED—On indicates that a signal was detected at the top transceiver.
• Power LED—On indicates that power is present on the I/O module.
• Port 1 LED—On indicates that a signal was detected at the bottom transceiver.
3 4
25175a
4. I/O module A
5. FC loop A
cabling" on page 24). Each port is identified with a transceiver element
(Figure
5
5). Port 1 is the bottom loop port, and port 2 is
HP StorageWorks 2500 Disk System user guide
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