IDSDM or 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 MicroSD cards for IDSDM and one card for vFlash. The MicroSD card capacity for IDSDM are 16, 32, or 64 GB, while for
vFlash the MicroSD card capacity is 16 GB. The IDSDM or vFlash module combines the IDSDM or vFlash features into a single module.
NOTE: There are two dip switches on the IDSDM/vFlash card for write-protection.
NOTE: One IDSDM card slot is dedicated for redundancy.
NOTE: It is recommended to use Dell branded MicroSD cards associated with the IDSDM/vFlash configured systems.
NOTE: The IDSDM and vFlash slot is not hot-pluggable.
Environmental specifications
NOTE: For additional information about environmental certifications, please refer to the Product Environmental
Datasheet located with the Manuals & Documents on www.dell.com/poweredgemanuals
Table 25. 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 26. 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.
Table 27. Maximum vibration specifications
Maximum vibration Specifications
Operating 0.26 G
rms
at 5 Hz to 350 Hz (all operation orientations).
Storage 1.88 G
rms
at 10 Hz to 500 Hz for 15 min (all six sides tested).
Technical specifications 37
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