Users Guide

50 Configuring iDRAC6 Enterprise
Internal Dual SD Module
Internal Dual SD Module (IDSDM) is available only on applicable platforms.
IDSDM provides redundancy on the hypervisor SD card by using another SD
card that mirrors the first SD card’s content. The iDRAC6 vFlash SD card,
with the second SD card, can be set to IDSDM by setting the Redundancy
option to Mirror mode in the Integrated Devices screen of the system BIOS
setup. When the IDSDM feature is enabled, the vFlash functionality of
iDRAC6 vFlash SD card is not available and this card is set as the secondary
SD card in IDSDM. For more information about the BIOS options for
IDSDM, see the Hardware Owner’s Manual available on the Dell Support
website at dell.com/support/manuals.
NOTE: In the BIOS setup, Integrated Devices screen, the Internal USB Port option
must be set to On. If this is set to Off, the IDSDM will not be visible to the system as
a boot device.
Either of the two SD cards can be the master. For example, if two new SD
cards are installed in the IDSDM, SD1 will become the Active or master card.
SD2 will be the standby card, and all file system IDSDM writes will go to
both cards, but reads will occur only from SD1. At any time if SD1 fails or is
removed, SD2 will automatically become the Active (master) card.
Using iDRAC you can view the status, health, and availability of IDSDM.
The SD card redundancy status and failure events are logged to SEL,
displayed on LCD, and PET alerts are generated if alerts are enabled.
Table 2-5. IDSDM Status
IDSDM - Mirror
Mode
SD Card vFlash SD Card
Enabled Active (SD1 Card) vFlash Inactive, Standby SD2
Disabled Active (SD2 Card) Only vFlash Active