Gateway Server E-842R Manual de usuario descargar pdf (Pagina 17)

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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.

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 master-slave configuration to allow for

failover.

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

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.

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 E-842R enclosure in a multiple enclosure configuration, See

“Enclosure cabling - multiple enclosures” on page 25 for further information on enclosure

expansion.

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Gateway Server E-842R Manual de usuario Pagina 17