It's more uncommon nowadays. VMware has officially recommended against sdcard boot, which used to be fairly popular. The SD card option is still usually availab

It's more uncommon nowadays. VMware has officially recommended against sdcard boot, which used to be fairly popular. The SD card option is still usually available but generally recommended against when getting blades or pizzaboxes from HPE, Cisco and Dell. For various reasons it's now nearly the same price to toss 2x nvme drives in, instead of the SD card raid controller and SD card mounting assembly. TCO is definitely lower due to the write resilience of your typical nvme flash drive compared to an SD card, physical work swapping parts can be way more expensive than a small capital increase.