BX920 S2 Operating Manual 11
Performance features
I If a server blade is configured with one or two mezzanine cards, this does
not exclude other configurations for any of the other server blades in a
BX900 system unit.
If you want to install mezzanine cards in server blades, the system unit
must be equipped with the corresponding fiber-channel, Infiniband
and/or Ethernet connection blades. You can find detailed information
about the equipping rules for connection blades in the operating manual
for the BX900 system unit.
Mezzanine cards may only be installed and removed by authorized,
qualified personnel. The procedure is described in the service
supplement.
Hard disk drives
The server blade can be equipped with two 2.5-inch SAS HDD modules. The
connection to the onboard controller via the SAS backplane is wireless. This
allows HDD modules to be plugged in or pulled out easily.
If the server blade has the corresponding RAID configuration, HDD modules
can also be replaced during operation.
A UFM (USB flash module) can also be configured.
Onboard SAS controller
The server blade has an onboard hard disk controller (LSI1064E SAS) to control
2 SAS hard disk drives.
Graphics controller
The server blade has an onboard graphics controller (integrated in the iRMC S2
controller). A monitor can be connected via the Y cable on the front of the server
blade.
External connectors
The server blade has a connector for a special Y cable on the front, with 4 USB
connectors, one serial connector and one video connector (VGA).
High level of availability and data security
When memory data is accessed, 1-bit errors are identified in the main memory
and automatically corrected with the error correcting code (ECC) method.
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