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• Secondary controller: M.2 mini-storage module with two SATA M.2 SSDs.
• The embedded SATA RAID controllers must be enabled in the server BIOS. If you ordered the server
with embedded SATA RAID, it is enabled at the factory.
• (Optional) LSI MegaSR drivers for Windows or Linux.
• The software RAID controller requires UEFI boot mode; Legacy boot mode is not supported.
• If you use an embedded RAID controller with Linux, both the pSATA and the sSATA controller must
be set to
LSI SW RAID
mode.
Embedded SATA RAID Controller Considerations
Note the following considerations:
• The default setting for this embedded controller hub is SATA RAID 0, 1, and 10 support for up to eight
front-loading SATA drives, and up to two internal M.2 SATA drives. The hub is divided into two SATA
controllers that have different functions.
• When you order the server with this embedded controller, the controller is enabled in the BIOS. Instructions
for enabling the controller are included for the case in which a server is reset.
• You cannot downgrade from using a hardware RAID controller card to using the software RAID embedded
controller.
Data migration from software RAID (embedded RAID) to hardware RAID (a
controller card) is not supported and could result in data loss. Migrations from
software RAID to hardware RAID are supported only before there is data on the
drives, or when there are no drives in the server.
Caution
• The required drivers for this controller are already installed and ready to use with the LSI SWRAID
Configuration Utility. However, if you will use this controller with Windows or Linux, you must download
and install additional drivers for those operating systems.
Embedded SATA RAID: Two SATA Controllers
The embedded RAID platform controller hub (PCH) is split into two controllers: primary SATA (pSATA)
and secondary SATA (sSATA). These two controllers are seen as separate RAID controllers in the Cisco
IMC interface and are configurable separately.
• SFF 10-drives server UCSC-C220-M5SX:
• The pSATA controller controls up to eight front SATA drives (drive bays 1–8).
• The sSATA controller controls two internal SATA M.2 drives, when they are present in the M.2
mini-storage module option.
If the M.2 mini-storage module is not present, or if M.2 NVMe drives are installed in the mini-storage
module, the sSATA controller is automatically disabled.
•
•
Cisco APIC M3/L3 Server Installation and Service Guide
105
Storage Controller Considerations
Embedded SATA RAID Controller Considerations