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Before You Begin
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While the 3ware 9550SX RAID controller can be installed in
both 64-bit PCI and PCI-X slots, not all slots give equal
performance.
The 3ware 9550SX controller performs best when installed in a
PCI-X 133MHz 64-bit slot. However, it can also operate at
66MHz or 100MHz.
Whether to Use the LED Status Connector
3ware RAID controllers include two types of LED status
connectors:
Overall indicator, which lights when any drive is active.
Individual LED indicators, for each drive. (Not supported on
chassis that have a common ground.)
If you are building a system from scratch, you may want to consider
using a chassis or drive carrier that is compatible with the 3ware
RAID controller activity LEDs, such as the AMCC RDC-400-
SATA drive carrier, available through AMCC. Please check the
3ware web site (
www.3ware.com) for chassis and drive carrier
compatibility list.
For more information, see “Connecting Drive Activity LED
Indicators” on page 17.
Most chassis have a single drive activity cable that you can connect
to the overall activity indicator on the 3ware 9550SX controller. For
the location of the overall drive activity connector, see the figure for
the appropriate controller in the installation sections starting on
page 18, and refer to Table 1, “LED Indicator Pin Positions,” on
page 20.
Note: If you are using a chassis that includes a Chassis
Control Unit (CCU), follow the instructions that came
with the chassis to connect the I
2
C cable from the CCU
to the I
2
C connector on the 9550SX.