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Functional Description
ATCA-F125 (6873M Artwork) Installation and Use (6806800J94K
)
88
4.10.3 Storage Hard Disk Drive
The ATCA-F125 provides a SATA connector and mounting features to install a 2.5" SATA hard
disk drive on the board. This HDD can be used to store system management data,
configuration data, and boot images for the service processor or the PrAMC. An 80Gbyte
extreme duty drive or equivalent may be installed to support "enterprise class" features, like
permanent operation (24/7) and extended temperature range. The HDD can be accessed by
either the service processor or the PrAMC processor, depending on the state of the onboard
SATA mux. The mux may be controlled the service processor or the IPMC through registers in
the FPGA. By default, the mux will be configured to connect the SATA drive to the service
processor.
4.11 Telecom Clocking
The ATCA-F125 supports an optional telecom clocking subsystem that is responsible for the
generation and distribution of traceable telecom clocks per use throughout the local shelf and
up to five connected extension shelves. Specifically, the following key features are provided:
T0 and T4 PLLs for the generation of T[0] system clocks and a T[4] SSU clock
Dual T1/E1 ports to allow reception of redundant T[3] BITS/SSU clocks
Stratum 3 oscillator
Figure 4-11 Fabric Channel Cross Connect
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