Owners Manual
Figure 49. Installing optional IDSDM card
Next steps
1 Install the microSD cards.
NOTE
: Reinstall the microSD cards into the same slots based on the labels you had marked on the cards during removal.
2 Follow the procedure listed in After working inside your system.
Power supply unit
The power supply unit (PSU) is an internal hardware component which supplies power to the components in the system.
Your system supports one of the following:
• Two 2400 W, 2000 W, 1600 W, or 1100 W AC power supply units (PSUs)
• Two 1100 W DC PSUs
• Two 1100 W Mixed Mode HVDC PSUs
NOTE
: The XC940 Series system supports hot swappable PSUs. For more information, see the Technical specications section.
CAUTION: If two PSUs are installed, both the PSUs must have the same type of label. For example, Extended Power
Performance (EPP) label. Mixing PSUs from previous generations of XC Series Appliance and XC Core System is not supported,
even if the PSUs have the same power rating. This results in a PSU mismatch condition or failure to turn the system on.
NOTE: Titanium PSU is nominally rated for 200 V AC to 240 V AC input only.
NOTE: When two identical PSUs are installed, power supply redundancy (1+1 – with redundancy or 2+0 – without redundancy) is
congured in system BIOS. In redundant mode, power is supplied to the system equally from both PSUs when Hot Spare is
disabled. When Hot Spare is enabled, one of the PSUs is put into the sleep mode when system utilization is low in order to
maximize eciency.
Installing and removing system components 99