constrained performance here is when using unbuffered I/O. To ensure that writes are fully committed to non-volatile regions of
the RAID volume, unbuffered I/O bypasses cache (for example by using the Force Unit Access bit in the NVMe protocol) and
the I/O operation will not complete until all the drives in the RAID volume have completed the request to commit the data. This
kind of IO operation completely negates any advantage of a higher performing drive in the volume.
Care must be taken to match not only the drive vendor, capacity, and class, but also the specific model. Drives from the same
vendor, with the same capacity, and even within the same class, can have different performance characteristics for certain
types of I/O operations. Thus, matching by model ensures that the RAID volumes are consisted of a homogeneous array of
drives that deliver all the benefits of a RAID volume without incurring the additional penalties when one or more drives in the
volume are lower performing.
OptiPlex 7090Micro supports RAID with more than one hard drive configuration.
Hard drive preloaded bracket matrix
Table 16. HDD preloaded bracket cable
3.5-inch Caddy/Bracket
No
2.5-inch Caddy/Bracket
No
Power adapter
Table 17. Power adapter specifications
Description
Values
Type
90 W (35 W CPU)
130 W (35 W CPU)
180 W (65 W CPU and
DGFX SKU)
Diameter (connector)
4.5 mm x 2.9 mm
4.5 mm x 2.9 mm
7.4 mm x 5.1 mm
Input voltage
100 VAC—240 VAC
100 VAC—240 VAC
100 VAC—240 VAC
Input frequency
50 Hz—60 Hz
50 Hz—60 Hz
50 Hz—60 Hz
Input current (maximum)
1.50 A
2.50 A
2.34 A
Output current (continuous)
4.62 A
6.70 A
9.23 A
Rated output voltage
19.50 VDC
19.50 VDC
19.50 VDC
Temperature range:
Operating
0 °C to 40 °C (32 °F to 104
°F)
0 °C to 40 °C (32 °F to
104 °F)
0 °C to 40 °C (32 °F to
104 °F)
Storage
-40°C to 70°C (-40°F to
158°F)
-40°C to 70°C (-40°F to
158°F)
-40°C to 70°C (-40°F to
158°F)
GPU—Integrated
The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your OptiPlex 7090
Micro.
Table 18. GPU—Integrated
Controller
External display support
Memory size
Processor
Intel UHD Graphics 630
Two DisplayPort 1.4 ports
Shared system memory
10
th
Generation Intel Core
i3/i5/i7/i9
Specifications of OptiPlex 7090 Micro
23
