Platform = SoC processor + logic chipsets (North Bridge/South Bridge) + DIMM + Baseboard Management Controller + PCB + Graphic Cards
North Bridge = Memory controller + PCIe controller
South Bridge = SATA (HDD & SSD)/USB/Ethernet/MAC/Flash/SPI (serial peripheral interface)/LPC(low pin count)
SoC = CPU [+ GPU] + memory (cache) + memory controller + I/O controller (PCIe, SATA, USB, Gbe) + system bus
Baseboard management controller provides for remote monitoring/management of server boards by system admin
RAID: Redundant Array of Inexpensive Disks -> applied to HDD/SSD -> connect to processor through SATA interface
Server Processor performance attributes: Multicore (parallel processing), multithreading (virtualization), clock speed, cache, memory bandwidth & latency, logic chipset, memory subsystem, system bus, technology node( 14 FinFet v/s 16nm), ISA ( instruction set architecture: x86 v ARM), ECC (error correction code), RAS (reliability, availability & serviceability)
Rack & blade servers Chassis of racks, with each rack supporting: servers, switches, networking & storage, peripherals, adapters & cards, power supplies, fans & cooling equipment
1RU or 1U is 1.75" high, 19" wide
Blade server can fit into 19" rack and may be 4U to 10U (or larger) in height - and can support multiple blades, with each blade being processor + logic chipsets + memory + storage + network +I/O controllers/interfaces
Blade servers also include fabric modules + switch modules + power management modules, sometime in separate cards in rack-mount chassis
Software Windows Server supports x86 only, not ARM
Commercially available Linux platforms:
Ubuntu (Canonical) -> supports x86, ARM
Suse Linux Enterprise Server /SLES (Novell) & Red Hat -> supports x86, not validated for ARM
Linaro: industry consortium to develop open source Linux software for ARM based SoC's
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