6-2
Fibre Channel Storage Enclosures (FC4100)
About the Fibre Channel Storage Enclosure
Disk Drive Spin-up Sequence
The two APC modules in the Storage Enclosure provide enough
power for 12 disk drives to spin up simultaneously. If one APC
fails, drives 1–3 will spin up first, followed by drives 4–6, drives
7–9 and drives 10–12, with a 6-second delay between each set.
for the location of each drive
slot.
I/O Modules
The Adaptec FC Storage Enclosure can accommodate two LIO
modules, although it is possible to have only one. LIO modules are
a combination of an LRC
3
module and a copper or optical module.
The LIO modules are located on the back of the Storage Enclosure,
as shown in
.
Figure 6-1 FC I/O Modules
The Input connector is the primary FC Loop Input port, and the
Output connector is available for FC loop expansion output. A
loop-back module is not required, since the I/O expansion module
automatically enables the expansion/output connector when valid
FC signals are present.
The LIO JBOD module is used for FC JBOD applications, and has
two connectors on it, labelled Input and Output.
FC I/O Modules
