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Disk I/O module
The expansion enclosure houses one or two Disk I/O modules. They provide the drive expansion for the RAID enclosure. When expanding the system, you may add up to four expansion enclosures. This will give you a total of five enclosures including the RAID enclosure. A fully loaded system will provide a total of 60 disk drives.
Important
Do not mix Disk I/O modules and RAID Controller modules in the same enclosure. Disk I/O modules are only installed in the expansion enclosure and RAID Controllers are only installed in the RAID enclosure.
Processors housed on the Disk I/O modules provide enclosure management and an interface to the devices on the backplane, PSU, Disk I/O module and Ops panel, which monitor internal functions. These Disk I/O module processors operate in a
The enclosure may be configured with either one or two modules. If only one Disk I/O module is installed, a blank module must be installed in the unused bay.
Each SAS connector has four LEDs adjacent to the connector. The LEDs indicate I/O activity on that specific SAS port lane where each port has four lanes.
Important
The OUT port on the RAID Controller or DIsk I/O module connects to the IN port on the Disk I/O module in the next
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