Release Notes
Table Of Contents
- Ubuntu Server 20.04 LTS for Dell EMC PowerEdge Servers Release Notes
- Release summary
- Compatibility
- New and enhanced in this release
- Important notes
- Known issues
- The name of the NVMe device may change when it is hot-inserted after a surprise removal
- NVMe devices are enumerated in namespace 2 when hot-inserted into the server after being surprise removed
- /proc/mdstat and mdadm -D commands display incorrect statuses when two NVMe devices are surprise removed from a RAID 5 MD array
- Status of the RAID 0 LV is displayed as Available when one of the members of the RAID array is surprise removed
- BIOS Dell Update Packages (DUPs) will not run on Ubuntu 20.04
- Ubuntu Server 20.04 live image installation fails due to a loss of network connectivity
- CCP initialization failed error encountered after Ubuntu.20.04 is installed
- NVMe drive is not detected after multiple hot plug operations
- Limitations
- Updating Ubuntu
- Resources and support
- Contacting Dell EMC

Resources and support
For more information about the features of this release, see www.wiki.ubuntu.com/FocalFossa/ReleaseNotes#Ubuntu_Server.
Topics:
• Identifying the series of your Dell EMC PowerEdge servers
• Latest Release Notes
• Related documents and links
• Accessing documents using product selector
Identifying the series of your Dell EMC PowerEdge
servers
The PowerEdge series of servers from Dell EMC are divided into different categories based on their configuration. They are
referred as YX2X, YX3X, YX4X, YX4XX, or YX5XX series of servers. The structure of the naming convention is described below:
The letter Y denotes the character in the server model number. The character denotes the form factor of the server. The form
factors are listed below:
● C- Cloud
● F- Flexible
● M or MX- Modular
● R- Rack
● T- Tower
The letter X denotes the numbers in the server model number. The number denotes multiple characteristics about the server.
They are listed as follows:.
● The first digit (X) denotes the value stream or class of the server.
○ 1-5—iDRAC basic
○ 6-9—iDRAC Express
● The second digit denotes the series of the server. It is retained in the server naming convention and does not replace the
letter X.
○ 0—series 10
○ 1—series 11
○ 2—series 12
○ 3—series 13
○ 4—series 14
○ 5—series 15
● The last digit (X) always denotes the make of the processor as described below:
○ 0-Intel
○ 5-AMD
NOTE:
For servers that use an AMD processor, the model number is made up of four digits instead of three. The third digit
(X) denotes the number of processor sockets that the series of server supports.
● 1 one socket server
● 2 two socket server
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14 Resources and support