Mainboard Layout - Huawei RH2288H V3 User Manual

RH2288H V3 Server
User Guide
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2.6 Mainboard Layout

Figure 2-19
Issue 46 (2022-12-28)
Compone Description
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Dual-SD Provides two SD card slots. Each slot supports an SD card of
module up to 32 GB. SD cards can be used as the boot media of the
server. If the iBMC detects two SD cards when completing
initialization, the iBMC automatically configures the two SD
cards as a RAID 1 array. You can view information about the
SD cards and RAID 1 array on the iBMC WebUI by choosing
System Info > Other. However, you cannot modify the
configuration.
SD card Uses flash memory and SPIs to store data. Currently, NAND
flash memory is mostly used in the industry. NAND flash
memory stores electrons on the floating gate to store data.
However, electrons frequently passing through the floating
gate will weaken the gate's ability to store electrons and
eventually make the gate unable to store electrons. This
problem is common to NAND flash memory. To prevent
failures of NAND flash memory, accurately assess the amount
of service data to be written.
NOTE
● An SD card can be used only as a boot device for OSs.
● SD cards have weak endurance and cannot be used as data
storage devices. Use enterprise-level HDDs or SSDs to replace SD
cards for data storage when frequent data erasure operations are
involved.
● Installing write-intensive service software on SD cards will
accelerate the write life consumption and result in perpetual
damage of SD cards. SD cards cannot be used for such services.
● SD cards cannot be used in cache scenarios.
FlexIO ● One GE FlexIO card with two or four GE ports, or one
card 10GE FlexIO card with two 10GE electrical or optical ports.
Both FlexIO cards support the Network Controller
Sideband Interface (NC-SI).
● One IB FlexIO card with one or two 56G IB optical ports.
The FlexIO card does not support NC-SI.
NOTE
For details about the FlexIO cards supported by the RH2288H V3, see
Computing Product Compatibility
shows the mainboard layout.
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