UCS B22 M3 End of Life: Migration Guide to UCS X210c M7

If you are still running a Cisco UCS B22 M3 (UCSB-B22-M3) in a 5108 chassis, you are operating gear that Cisco stopped selling on April 30, 2015 and stopped supporting entirely on April 30, 2020. That second date is the one that matters: the B22 M3 is now more than six years past its Last Day of Support. There are no new firmware or BIOS releases, no PSIRT security fixes for the CIMC or adapter firmware, and no TAC case or RMA path for failed components. For regulated buyers in federal, DoD, SLED, and healthcare environments, that is not just an operational risk, it is an audit finding waiting to happen. This guide explains exactly what the milestones mean, why the UCS X210c M7 is the right modern landing spot, and how to plan the migration without disrupting the workloads still riding on these blades.

What the B22 M3 actually was, and why it aged out

The B22 M3 was Cisco's value-tier, half-width, two-socket blade for the 5108 chassis. It paired two Intel Xeon E5-2400 series processors (Sandy Bridge-EN, up to eight cores per socket, so a maximum of 16 cores per blade), 12 DDR3 DIMM slots topping out around 384 GB, two 2.5-inch SAS/SATA drive bays, and a single mezzanine slot for a Cisco VIC 1240 or 1280 adapter feeding 10 Gigabit Ethernet through 6100 or 6200 series Fabric Interconnects. It was deliberately positioned below the B200 M3 for cost-sensitive virtualization and general-purpose enterprise consolidation. Every one of those numbers, DDR3 memory, 10GbE fabric, 16-core ceiling, single mezzanine, is now a decade behind the current platform, and that gap is the real reason to move rather than the EoL date alone.

What each milestone date means for you

• End of Sale (April 30, 2015): Cisco stopped taking new orders for the B22 M3. Anything in production since then has been running on borrowed time from a procurement standpoint, and spares only existed in the secondary market.
• End of SW Maintenance (not applicable / coincident): UCS blade firmware is delivered as bundled infrastructure packages tied to UCS Manager. Once the platform exits the support window, the firmware trains that still recognize the B22 M3 are frozen, so you cannot land newer Cisco IMC, BIOS, or adapter firmware that carries security fixes.
• Last Day of Support (April 30, 2020): the decisive date. After LDoS, Cisco TAC will not open or work a case for the hardware, RMA of failed blades or components ends, and PSIRT issues no further fixes for vulnerabilities discovered in the platform's firmware. You are fully self-insured on hardware and exposed on security.

Why acting now is not optional: A platform past LDoS cannot receive a security patch even when a new CVE lands against its CIMC, BIOS, or VIC firmware. Auditors operating under FedRAMP, CMMC, HIPAA, and PCI increasingly flag unsupported hardware as an unmanageable risk regardless of compensating controls, because there is no vendor remediation path. The cost of a single failed component with no RMA, or one finding in a compliance review, typically eclipses the cost of a planned refresh.

The recommended replacement: UCS X210c M7

Cisco's modern blade-class platform is no longer the 5108 chassis at all. It is the UCS X-Series, built around the X9508 chassis, and the direct landing spot for a B22 M3 workload is the UCS X210c M7 Compute Node (UCSX-210C-M7). The architectural difference is the whole point: the X-Series replaces fixed midplane I/O with the X-Fabric system, so compute, fabric, and future accelerator modules evolve independently. You are not buying a faster blade; you are buying out of the dead-end midplane that limited the M3 generation.

What concretely gets better

• CPU generation: two 4th or 5th Gen Intel Xeon Scalable processors (Sapphire Rapids / Emerald Rapids) with up to 60 cores per socket, versus the B22 M3's 8-core E5-2400. That is a jump from a 16-core ceiling to as many as 120 cores per node, an order-of-magnitude consolidation ratio for virtualization.
• Memory: 32 DDR5 DIMM slots scaling to roughly 8 TB, replacing 12 DDR3 slots capped near 384 GB. DDR5 bandwidth and capacity directly raise VM density per node.
• Storage and I/O: up to six front NVMe/SAS/SATA drives plus two internal M.2 boot devices, with a PCIe Gen5 path, versus two SAS/SATA bays and a single mezzanine on the B22 M3.
• Fabric: VIC 15000-series adapters (for example the VIC 15231/15420/15422) connect through 9108 or 9416 Intelligent Fabric Modules at 100 Gbps per lane, terminating on UCS 6536 Fabric Interconnects, replacing the 10GbE VIC 1240/1280 path on 6100/6200 FIs.
• Management and licensing: the X-Series is designed for Cisco Intersight and Intersight Managed Mode (IMM), moving you off classic UCS Manager to a SaaS or on-prem appliance control plane with subscription licensing (Intersight Essentials/Advantage tiers), policy-driven server profiles, and proactive firmware and telemetry.

A practical migration plan

1. Assessment and inventory

Start by cataloging every B22 M3 by serial, the workloads it hosts, and the UCS Manager service profiles bound to it: vNIC/vHBA templates, VLAN and VSAN assignments, boot policy, and BIOS policy. Capture current core, memory, and storage utilization so you size the X210c M7 by real demand, not nameplate. Because each X210c M7 carries vastly more cores and memory, expect a meaningful consolidation: several B22 M3 blades often collapse into a single modern node, which changes both your rack footprint and your hypervisor licensing math.

2. License transition

The B22 M3 era predates today's subscription model. The X-Series moves you to Intersight licensing tiers, so budget the subscription term alongside the hardware rather than treating it as an afterthought. If you run VMware or another hypervisor licensed per-core or per-socket, re-model that cost against the higher core counts per node before you finalize node quantities, since consolidation can swing software licensing either direction.

3. Configuration and feature parity

Service profiles translate but do not copy. Rebuild your UCS Manager policies as Intersight server profiles and policies, mapping vNICs, vHBAs, QoS, boot order, and SAN connectivity to the IMM model. Validate that any feature you relied on (for example FC boot-from-SAN, specific adapter offloads, or fabric failover behavior) has an equivalent on the VIC 15000-series and 6536 FIs, and document the deltas before cutover.

4. Physical: rack, power, fabric, and optics

This is a chassis swap, not a blade swap. The X9508 is a 7RU chassis with its own power and cooling profile and 100G IFM uplinks to 6536 Fabric Interconnects, so plan rack space, PDU capacity, and cabling for the new chassis rather than reusing 5108 slots. Confirm upstream optics and breakout cabling match the 6536 and your existing leaf/spine, and verify SAN connectivity if you boot from fabric. Running the new chassis in parallel with the legacy 5108 during transition is the safest path.

5. Phased cutover

Stand up the X9508 and at least one X210c M7 alongside the live B22 M3 environment. Migrate workloads in waves, using live migration where the hypervisor supports it, validating each wave (performance, storage paths, network policy) before moving the next. A parallel-run approach means a rollback is always available until the final blade is drained.

6. Secure decommission

Once a B22 M3 is drained, sanitize its drives to your data-handling standard (NIST 800-88 purge or destroy for regulated data), clear the CIMC and adapter configuration, and document chain of custody for the chassis and blades. For DoD and federal property, follow your disposition process for the asset tags before the hardware leaves the rack.

Procurement notes for regulated buyers

For federal, DoD, and SLED contracts, confirm TAA compliance and country-of-origin on the X-Series components, and align the buy to your GPC thresholds or contract vehicle. Current-generation UCS and the VIC 15000 adapters can carry longer lead times than commodity gear, so place orders against a planned cutover date rather than reactively after a failure. Buy through an authorized Cisco partner so the Intersight licensing, Solution Support, and warranty register correctly to your organization. You can review the full milestone record for this product on its end-of-life detail page, browse other affected platforms in the Cisco EoL hub, and check current UCS X-Series configurations in our catalog.

Plan your B22 M3 refresh with an authorized partner: uniqcli scopes UCS X-Series refreshes for federal, DoD, SLED, healthcare, and enterprise buyers, including service-profile translation to Intersight, TAA-compliant BOMs, and phased cutover planning. Get a configuration and quote at /get-a-quote and turn an unsupported, unbudgeted risk into a planned, defensible upgrade.