Rackable Systems OmniStor 4900F Series, User Manual

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Chapter 3 - Setup and Installation
Simplex Mode (OmniStor 4911F/4912F/4931F/4932F)
59
Simplex Mode (OmniStor 4911F/4912F/4931F/4932F)
The basic simplex (Stand-Alone) operating mode provides a single enclosure with a
single RAID Controller solution. This mode provides solutions for single or multiple
host environments to achieve a fault-tolerant disk storage solution. It has provisions
for drive channel expansion through daisy-chaining of OmniStor 4000F JBOD
enclosures, and/or upgrading to a dual RAID Controller model by adding an
additional controller for duplex operations.
CAUTION:
The bus speed must be set to the same setting between the disk drives
and the Disk I/O card(s), and the host system HBAs (BIOS setting) and
the Host I/O cards. For example, if you are using 2 Gb drives, the Disk
I/O cards must be set to 2 Gb mode. If your host system HBA(s) is set
to 1 Gb mode, the Host I/O card(s) must be set to 1 Gb mode.
NOTE:
Split-bus mode is not supported when a RAID Controller is installed.
Stand-Alone Dual Port Single Host Configuration
1
Set the jumper (JP4) on the Disk I/O card to configure the bus speed mode.
Loosen the two captive fastener screws on the Disk I/O card and pull it from the
enclosure using the fastener screws. Locate the jumper JP4 and position it for the
desired speed setting, (installed on one pin only for 2 Gb mode and on both pins
for 1 Gb mode).
Disk I/O Card