Daisy-Chain CMC Network Connection

Condition	Description
CMC failover	Chassis management resumes after the chassis fails over to the standby CMC.
command issued
CMC firmware	Chassis management resumes after the CMC reboots or chassis fails over to the
update	standby CMC. It is recommended that you update the standby CMC first so that
	there is only one failover event. For more information on updating the CMC
	firmware, see the CMC User's Guide at support.dell.com/manuals.
CMC error	Chassis management resumes after the CMC resets or chassis fails over to the
detection and	standby CMC.
correction

NOTE: You can configure the enclosure with a single CMC or with redundant CMCs. In redundant CMC configurations, if the primary CMC loses communication with the enclosure or the management network, the standby CMC takes over chassis management.

Each CMC has two RJ-45 Ethernet ports, labeled GB (the uplink port) and STK (the stacking or cable consolidation port). With basic cabling, you can connect the GB port to the management network and leave the STK port unused.

CAUTION: Connecting the STK port to the management network can have unpredictable results. Cabling GB and STK to the same network (broadcast domain) can cause a broadcast storm.

If you have multiple chassis in a rack, you can reduce the number of connections to the management network by daisy-chaining up to four chassis together. If each of the four chassis contains a redundant CMC, by daisy-chaining you can reduce the number of management network connections required from eight to two. If each chassis has only one CMC, you can reduce the connections required from four to one.

When daisy-chaining chassis together, GB is the uplink port and STK is the stacking (cable consolidation) port. Connect the GB ports to the management network or to the STK port of the CMC in a chassis that is closer to the network. You must connect the STK port only to a GB port further from the chain or network.

Create separate chains for the CMCs in the active CMC slot and the second CMC slot.

NOTE: At least one CMC must be installed for the system to power up. If a second, optional CMC module is installed, failover protection and hot-swap replacement is available. See the latest CMC User's Guide at support.dell.com/manuals for complete instructions on how to set up and operate the CMC module.

The following figure illustrates the arrangement of cables for four daisy-chained chassis, each with active and standby CMCs.

M1000E specifications

The Dell M1000E blade enclosure is a robust and versatile platform designed to optimize data center efficiency and streamline server management. A fundamental component of Dell's PowerEdge series, the M1000E is engineered to house multiple server blades in a compact, modular chassis, enabling organizations to conserve space and reduce power consumption while enhancing performance.

One of the main features of the Dell M1000E is its ability to accommodate up to 16 half-height server blades or 8 full-height server blades. This flexibility allows for a diverse range of configurations tailored to specific workloads, whether for virtualization, database management, or application hosting. The chassis provides shared power supplies and cooling, further contributing to the enclosure's efficient operation.

In terms of connectivity, the M1000E includes integrated high-speed networking capabilities. It can support multiple generations of networking technologies, ranging from Gigabit Ethernet to 10 Gigabit Ethernet, and offers options for Fibre Channel and InfiniBand connections. This extensive range of networking options ensures that organizations can integrate the M1000E into existing infrastructures seamlessly.

The Dell M1000E also utilizes advanced management tools to simplify administration and monitoring. One of the standout features is the Dell OpenManage suite, which provides a comprehensive set of tools for hardware management and system updates. Users gain insights into system health, performance, and power usage, enabling proactive maintenance and optimization of resources.

The enclosure is designed with scalability in mind. As businesses grow, the M1000E can be expanded easily by adding more blades without the need for significant reconfiguration. This scalability ensures that IT departments can respond rapidly to changing demands, ensuring that resources align with organizational requirements.

From a security standpoint, the M1000E provides multiple layers of protection, including secure access controls and configurable management interfaces. This helps safeguard sensitive information and ensures compliance with stringent data protection regulations.

Overall, the Dell M1000E blade enclosure represents a compelling solution for modern data centers, merging performance, efficiency, and scalability into a single chassis designed to meet the demands of today’s enterprise environments. Its advanced technologies and features make it a valuable asset for organizations looking to enhance their IT infrastructure.