Enclosure Management Cabling for Intel C200 Series Chipset and Intel C600 Series Chipset Based Server Systems with Hot-Swap Drive Enclosures

Enclosure Management Cabling Guide for Intel® C200 and C600 Series Chipset Based Server Systems with Hot-Swap Drive Enclosures
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Answer: Check whether the targeted boot disks are connected through expander devices to the ports of On-board SATA/SAS Capable
Controller. When Drives or RAID arrays in RSTe mode are connected through expander devices, they cannot act as boot devices, but
still can be recognized under operating systems, if system boots from other devices and RSTe driver is loaded under operating system.