C-11
Cisco UCS C240 M4 Server Installation and Service Guide
OL-32474-01
Appendix C RAID Controller Considerations
Embedded SATA RAID Controller
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 front-facing drives 1–4; it can also control the two internal SATA
SSD boot drives (see
).
•
The secondary sSATA controller controls front-facing drives 5–8 (see
).
•
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 of only front
drives 1–4 (see
).
–
The first SATA controller can also control a RAID 1 group of the two internal SATA boot drives.
–
The secondary sSATA controller can control a RAID group of up to four drives, comprised of
only front drives 5–8 (see
Figure C-2
Embedded RAID Controller Drive Groups
•
See
Enabling the Embedded 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).
Table C-4
SATA and sSATA Listing of Drives in LSI SW RAID Utilities
SATA
sSATA
0—Front HDD 01
0—Front HDD 05
1—Front HDD 02
1—Front HDD 06
2—Front HDD 03
2—Front HDD 07
3—Front HDD 04
3—Front HDD 08
4—SSD internal boot drive
5—SSD internal boot drive
HDD01
HDD03
HDD05
HDD07
HDD02
HDD04
HDD06
HDD08
353287
SATA
sSATA
PCH
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