I have a PowerEdge R630 w/ a 10-bay chassis. I've ordered an IDSDM with dual SDcards for the primary operating system boot and root volumes.

I also see an SDcard slot on the backplane. Is this the vFlash slot? Do I need an iDRAC Enterprise license to use it? Does installing an IDSDM disable it, or can I use all three slots concurrently?


IDSDM is a dual-SD module to boot (visible from the BIOS as a boot media) an ESXi (Windows or Linux is not supported).

It is unrelated to the vFlash (also SD card format) used by the idrac (except for specific blade server where the slot is shared, i.e. it can be used either as a IDSDM or as vflash).

The vFash is a storage card that used for storing configuration files, ISOs, or any other file used to install/configure/diagnose the server from the idrac. vflash may also be used to boot an OS (typically an OS install ISO) but it is not redondant (single media as opposed to IDSDM) thus is not recommended as a general purpose OS storage.

vFlash does require an iDRAC enterprise licence (can be purchase separately).

  • Thank you. RE: IDSDM, will it boot Linux even though it's not supported, or will it just not boot?
    – mwp
    Jun 28 '18 at 17:49
  • Should be functional but ensure that writes are kept to a minimum (no swap).
    – sfk
    Jun 28 '18 at 18:00
  • Excellent, thank you so much. Yes, it will be boot and root only, with swap, /tmp, and /var mounted elsewhere.
    – mwp
    Jun 28 '18 at 18:01

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