Milestone dates
The dates Cisco published, with Cisco's own wording under each milestone.
| Milestone | Date |
|---|---|
| End of saleCisco: End-of-Sale Date Accessory | |
| Last ship dateCisco: Last Ship Date Accessory |
Affected part numbers
12 part numbers are covered.
| Part number | Description | Replacement named by Cisco |
|---|---|---|
| UCS-MR-X16G1RW | 16GB RDIMM SRx4 3200 (8Gb) | UCS-MRX16G1RE3 |
| UCS-MR-X16G1RW= | 16GB RDIMM SRx4 3200 (8Gb) | UCS-MRX32G1RE3= |
| UCS-MR-X16G1RW-M | 16GB 3200MHZ RDIMM (8Gb) | UCS-MRX16G1RE3 |
| UCS-MR-X16G1RW-M= | 16GB 3200MHZ RDIMM (8Gb) | UCS-MRX32G1RE3= |
| UCS-MR-X16G1RW-S | 16GB RDIMM SRx4 3200 (8Gb) | UCS-MRX16G1RE3 |
| UCS-MR-X16G1RW-S= | 16GB RDIMM SRx4 3200 (8Gb) | UCS-MRX32G1RE3= |
| UCS-ML-256G8RW | 256GB LRDIMM 8Rx4 3200 (16Gb) | UCS-MR256G8RE3 |
| UCS-ML-256G8RW= | 256GB LRDIMM 8Rx4 3200 (16Gb) | UCS-MR256G8RE3= |
| HCI-MR-X16G1RW | 16GB RDIMM SRx4 3200 (8Gb) | HCI-MRX16G1RE3 |
| HCI-MR-X16G1RW= | 16GB RDIMM SRx4 3200 (8Gb) | HCI-MRX32G1RE3= |
| HCI-ML-256G8RW | 256GB LRDIMM 8Rx4 3200 (16Gb) | HCI-MR256G8RE3 |
| HCI-ML-256G8RW= | 256GB LRDIMM 8Rx4 3200 (16Gb) | HCI-MR256G8RE3= |
Upgrade path
Cisco names 8 replacement part numbers. None of them is in our catalogue yet; send the part numbers with a quote request and we will source them new.
Source
Cisco: End-of-Sale and End-of-Life Announcement for the Cisco Select UCS M6 and HCI M6 DDR4 Memory. Retrieved 25 October 2026. Manufacturers sometimes revise these dates; check the source for the exact part number you run.