Explanation:

Of the available choices, only Cisco Unified Computing System (UCS) M-Series servers are comprised of cartridge-style modules. Cisco UCS M-Series servers are neither rack servers nor blade servers. M-Series servers are comprised of computing modules that are inserted into a modular chassis. The chassis, not the server, can be installed in a rack. The modular design enables the segregation of computing components from infrastructure components.

Cisco UCS B-Series servers, Cisco UCS E-Series servers, and Cisco UCS Mini servers are all blade servers that typically reside in a blade chassis. UCS B-Series blade servers can connect only to Cisco UCS Fabric Interconnect, not directly to a traditional Ethernet network. Blade servers in a chassis are typically hot- swappable, unlike the components of a rack-mount server. Therefore, blade server configurations are less likely to result in prolonged downtime if hardware fails.

Cisco UCS E-Series servers are typically installed in a blade chassis. However, Cisco UCS E-Series servers have similar capabilities to the standalone C-Series servers and do not require connectivity to a UCS fabric. In a small office environment, Cisco UCS E-Series servers are capable of providing the network connectivity and capabilities of a C-Series server along with the availability of B-Series servers.

Cisco UCS Mini servers are a compact integration of a Cisco UCS 5108 blade chassis, Cisco UCS 6324 Fabric Interconnects, and Cisco UCS Manager. Unlike other Cisco UCS servers, the UCS Mini server requires a special version of Cisco UCS Manager for management. It is possible to connect Cisco UCS C-Series servers to Cisco UCS Mini servers in order to expand their abilities.

Cisco UCS C-Series servers are typically installed directly in a rack. Cisco UCS C-Series servers are rack- mount standalone servers that can operate either with or without integration with Cisco UCS Manager. Therefore, Cisco UCS C-Series servers do not require a UCS fabric. For administrators who are more familiar with traditional Ethernet networks than UCS Fabric Interconnect, C-Series servers will most likely be simpler to deploy and feel more familiar than other Cisco UCS server products.

Reference:

Cisco Press CCNA Data Center DCICT 200-155 Official Cert Guide, Chapter 7: Cisco UCS Architecture, Cisco

UCS M-Series Servers, pp. 272-273

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