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VMware vSphere 6.5.x on Dell EMC PowerEdge Systems Release Notes

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Operating system reinstallation on top of an existing ESXi installation on a BOSS device fails

Description:

Dell EMC 14th generation PowerEdge Server configurations include a Boot Optimized Server Storage (BOSS) device for OS boot. BOSS device supports two Intel M.2 devices that are configured as separate non-RAID drives (PD1, PD2) or RAID 1 (VD). This configuration provides an option to have two physical disk (PD1, PD2) or RAID 1(VD) options, utilizing the two physical disks which are Intel M.2 devices.

On the first installation of ESXi 6.0.x to a BOSS PD 1, OS initializes or formats the disk layout and works as expected.

After ESXi 6.0.x is installed on a BOSS device, with ESXi 6.0.x installed on PD1, if a customer creates a VD on top of two physical disks (PD1, PD2), a subsequent reinstall (overwrite) of ESXi fails to reformat the disk layout. Upgrades of the existing installation (using original non-RAID drive) works.
Applies to:
ESXi 6.5 and 14th generation PowerEdge Servers
Workaround:

Delete the virtual disk (VD) and erase the physical disks manually from HII (System BIOS > Device Settings > BOSS AHCI Configuration Utility > Erase Physical disks), and then recreate the VD again. This removes existing partition table and results in successful installation.


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