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Connecting the Cables
This section describes the external RAID SCSI cable connections for single-bus and dual-bus
disk array cabinets. The single-bus cabinet uses only one channel from the MegaRAID
controller. The dual-bus cabinet uses two channels from the MegaRAID controller. The
following sections describe the details for connecting the cabinets.
NOTE
Single-bus cabinets are not available for the StudioZ RAX systems.
CAUTION
The rack-mount disk array cabinet can use RAID SCSI cables up to 2 meters. If you attach
cables longer than 2 meters to the cabinet, the cabinet and controller will not operate reliably.
Single-Bus Cabinets
Keep track of the cabinet attached to each channel of the MegaRAID controller. The drives
in each cabinet must be labeled according to their channel as described later in this chapter.
The channel usage and availability of the primary controller are as follows:
u
TDZ-612 RAX, RenderRAX, InterServe 6x5R -- These systems do not use a primary
controller.
u
InterServe 8400 -- Channels 0 and 1 are used for internal RAID section. Channels 0
and 1 are not available for connecting a cabinet.
u
InterServe 8000 -- Channels 0 and 1 are used for internal RAID section. Channels 0
and 1 are not available for connecting a cabinet.
The channels available on secondary controllers are as follows:
u
TDZ-612 RAX, RenderRAX, InterServe 6x5R -- Channels 0 and 1 are available for
connecting cabinets. Channel 2 is not available.
u
InterServe 8400, 8000 -- Channels 0 and 1 are available for connecting cabinets.
Channel 2 is available if the Channel 2 access cable is installed.
To connect RAID SCSI cables:
1. Connect the RAID SCSI cable to an available channel on the primary or secondary
MegaRAID controller. Connect the other end of the cable to the lower right connector
on the InterRAID-8e cabinet.
2. Secure the cables using the thumb screws (finger tight only). Failure to secure the
cables properly can result in intermittent problems with the cabinet or the MegaRAID
controller.
