IDSDM/vFlash card
The PowerEdge R640 system supports Internal Dual SD module (IDSDM) and vFlash card. In the 14th generation of PowerEdge servers,
IDSDM and vFlash card are combined into a single module, and are available in the following options:
•
vFlash or
•
vFlash and IDSDM
The IDSDM/vFlash card can be connected in a Dell-proprietary PCIe x1 slot using a USB 3.0 interface to host. IDSDM/vFlash module
supports two micro SD cards for IDSDM and one card for vFlash. Micro SD cards capacity for IDSDM are 16, 32, or 64 GB, while for vFlash
the microSD card capacity is 16 GB.
NOTE:
One IDSDM card slot is dedicated for redundancy.
NOTE:
It is recommended to use Dell branded micro SD cards associated with the IDSDM/vFlash configured
systems.
Environmental specifications
NOTE:
For additional information about environmental measurements for specific system configurations, see Dell.com/
environmental_datasheets.
Table 22. Temperature specifications
Temperature
Specifications
Storage
–40°C to 65°C (–40°F to 149°F)
Continuous operation (for altitude less than 950 m or 3117
ft)
10°C to 35°C (50°F to 95°F) with no direct sunlight on the equipment.
NOTE:
Maximum of 205 W, 28 core processor is supported in
systems with eight 2.5 inch processor direct attached PCIe SSD
drives, and three PCIe slot chassis.
NOTE:
Certain configurations may have ambient temperature
restrictions. For more information see the Ambient temperature
limitations section.
Fresh air
For information about fresh air, see Expanded Operating Temperature
section.
Maximum temperature gradient (operating and storage)
20°C/h (68°F/h)
Table 23. Relative humidity specifications
Relative humidity
Specifications
Storage
5% to 95% RH with 33°C (91°F) maximum dew point. Atmosphere must be
non-condensing at all times.
Operating
10% to 80% relative humidity with 29°C (84.2°F) maximum dew point.
32
Dell EMC PowerEdge R640 Installation and Service Manual
Technical specifications
