Avago Technologies MegaRAID SAS 8204ELP - Manual (Page 37)

Detailed Installation 2-5
Copyright © 2007 by LSI Corporation. All rights reserved.
Step 7. Connect the RAID Controller to the Devices
Use SAS cables to connect SAS devices, SATA II devices, or
both to the MegaRAID SAS RAID controller. See
Section 2.4,
“SAS Device Cables” for SAS cable information. See
Section 2.4.1, “Connecting the SAS RAID Controller with
External Connectors to Drive Boxes and Drive Enclosures,” on
page 2-9
for details on connecting the controller to physical
disks and expanders.
The maximum cable length is 6 meters (236.22 in.). You can
connect one device per SAS PHY unless you use an expander.
System throughput problems can occur if the SAS cables are
not the correct type. To minimize the potential for problems, use
the following guidelines:
a. Use cables no longer than 6 meters (236.22 in.) (LSI
recommends using shorter cables, if possible).
b. Use cables that meet the SAS specification.
c. Route the SAS cables carefully.
Step 8. Turn on the Power to the System
Reinstall the computer cover, and reconnect the AC power
cords. Turn power on to the host computer. Make sure that the
power is turned on to the SAS devices, SATA II devices, or both
before or at the same time that the power is turned on to the
host computer. If the computer is powered up before these
devices, the devices might not be recognized.
During boot, a BIOS message appears. The firmware takes
several seconds to initialize. The configuration utility prompt
times out after several seconds. The second portion of the
BIOS message displays the MegaRAID SAS RAID controller
number, firmware version, and cache SDRAM size. The
numbering of the controllers follows the PCI slot scanning order
used by the host mainboard.
Step 9. Run the WebBIOS Configuration Utility
Run the WebBIOS Configuration Utility to configure the physical
arrays and the logical drives. When the message Press
CTRL+H for WebBIOS appears on the screen, immediately
press CTRL+H to run the utility.