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Cisco UCS C220 M4 Server Installation and Service Guide
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Appendix C RAID Controller Considerations
Embedded SATA RAID Controllers
Embedded SATA RAID: Two SATA Controllers
The embedded RAID Patsburgh controller hub (PCH) is split into two controllers: SATA and sSATA
(secondary SATA). These two controllers are seen as separate RAID controllers in the Cisco IMC
interface and are configurable separately.
• The first SATA controller controls drives 1–4; the secondary sSATA controller controls drives 5–8.
• When configuring RAID groups, you cannot create a group that spans more than four drives.
–
The first SATA controller can control a RAID group of up to four drives, comprised only of
drives 1–4.
–
The secondary sSATA controller can control a RAID group of up to four drives, comprised only
of drives 5–8. See Figure C-2.
Figure C-2 Embedded RAID Controller Drive Groups
•
See Enabling the Embedded SATA RAID Controller in the BIOS, page C-13 for instructions on
enabling the two SATA controllers.
• Each controller is listed separately in the BIOS. You can select the boot order of the controllers in
the BIOS (use the Boot Options tab in the BIOS Setup Utility).
Note To set boot order for virtual drives, use the LSI Embedded RAID Configuration Utility. See
Launching the LSI Embedded RAID Configuration Utility, page C-15.
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HDD 02
HDD 01 HDD 03
HDD 04
HDD 05
HDD 06
HDD 08
HDD 07
S ATA
sSATA
PCH