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Maintaining the Server Chassis
Note
NVMe drives are supported only with Cisco IMC/BIOS 4.0(2) and later; they are supported with Cisco UCS
Manager 4.0(2) and later.
Front-Loading NVMe SSD Population Guidelines
Each compute node in the chassis controls six drive bays. Drive bays 1 and 2 in each set of six bays support
NVMe SSDs. In the following figure only the drive bays outlined in red support NVMe drives.
• The four compute node groups are marked on the bottom lip of the chassis (below the drives). Drive
• In each of the compute node groups, populate the lowest numbered bays first.
• Drives installed in front-panel bays that do not have a corresponding compute node are not seen by the
• Keep an empty drive blanking tray in any unused bays to ensure proper airflow.
• In the following figure only the drive bays outlined in red support NVMe drives.
Figure 16: Drive Bay Numbering and NVMe Drive Support
1
Drive bays controlled by compute node 1
2
Drive bays controlled by compute node 2
Front-Loading NVME SSD Requirements and Restrictions
Caution
NVMe drives are not hot-swappable. You can replace them while the system is running, but you must shut
down the drive in the software or OS before removal.
Observe these requirements and restrictions:
• Cisco IMC/BIOS 4.0(2) and later; if using Cisco UCS Manager, release 4.0(2) and later.
• Informed hot plug (safe hot plug) is supported. This functionality is enabled by default. However,
• NVMe SSDs support booting only in UEFI mode. Legacy boot is not supported.
bays 1 and 2 in each group are marked with the drive bay numbers in squares to indicate that those bays
support NVMe drives.
system.
uninformed hot plug (surprise hot removal) is not supported.
Front-Loading NVMe SSD Population Guidelines
3
Drive bays controlled by compute node 3
4
Drive bays controlled by compute node 4
Cisco UCS C4200 Server Chassis Installation and Service Guide
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