Specifications

Cisco UCS C240 M4 High-Density Rack Server (Small Form Factor Disk Drive Model)
24
CONFIGURING the SERVER
STEP 5 SELECT RAID CONFIGURATION
The RAID controller choices are:
(1) Embedded Software RAID 5 Key Upgrade (on motherboard) (not supported in 24 or 16 HDD
backplane systems)
(2) Cisco 12G SAS Modular RAID Controller
The C240 M4 server has a dedicated RAID controller slot on the motherboard that accommodates
the Cisco 12G SAS Modular RAID controller for internal HDDs/SSDs. Cisco can provide
factory-configured RAID setting options depending on the RAID controller chosen and the
number of HDDs/SSDs ordered. Factory-configured RAID options are listed with each RAID card
description.
NOTE: If you do not select a Cisco 12G SAS Modular RAID controller or the embedded
software RAID 5 key upgrade, you will have two SATA-only RAID controllers that
support up to two sets of four SATA-only drives (RAID 0, 1).
The embedded RAID controller hub 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. For more details, see
Embedded SATA RAID: Two SATA Controllers, page 72.
NOTE: The UCSC-C240-M4SX (24-drive server) and UCSC-C240-M4S2 (16-drive server)
do not support the embedded software RAID 5 key upgrade (UCSC-SWRAID5), which is
installed on the motherboard. The only RAID support available for the 24-drive and
16-drive versions is through the Cisco 12G SAS Modular RAID controller for internal
drives.
NOTE: When creating each RAID volume, follow these guidelines:
■ Use the same capacity for each drive in each RAID volume
■ Use either all SAS drives or all SATA drives in each RAID volume
■ Use either all HDDs or all SSDs in each RAID volume
NOTE: The number of RAID groups (virtual drives) supported per controller is as
follows:
■ Embedded RAID = 8
■ Cisco 12G SAS Modular RAID controller = 64
NOTE: The RAID configuration options listed in Table 9 on page 26 are not available
if you choose the embedded software RAID 5 key upgrade (in this case, you must
configure RAID yourself using separate software).