The document is a diagram and description of a micro-server system architecture. It depicts several compute node trays connected via internal and external mini-SAS connections to Knox storage expansion boards (SEBs) with LSI SAS3008 controllers. The SEBs are connected to 10G TOR switches. The system is scalable with multiple configurations shown supporting different compute to storage ratios ranging from 1:15 to 1:120. Key components include Intel Avoton CPUs, DDR3 memory, NGFF flash, and SATA/SAS hard drives in the compute nodes and SEBs.

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7. CPU
Intel Avoton
2.4 GHz
(C2750, 8C /
C2550, 4C)
or
1.7 GHz
(C2350, 2C)
NGFF
Flash
Onboard VRs
Ch A
Ch B
ECC SO-DIMM,
DDR3-1600,
x4 for 32GB /
x2 for 16GB
PCI-E Gen2 x8
SATA3PCI-E x4
/ SATA 3
Flash
(BIOS)
XDP
FPGA I2C
GPIO
LPC
SPI
SPI
PCIERST#
SYSRST#
Clock
Generator
UART (Serial Tx/Rx)
EEPROM
Temp
Sensor
mSATA
SSD
Power&Signal(PCI-Ex16EdgeConn)
Clock
Buffer
PCI-E Gen2 x4
USB 2.0 x1
SerDes (1GbE) x1
SATA2 x1
Slot ID / HW Rev
I2C Bus
PWRON
+12V
I2C_Alert#
PWR LED
Diagnostic LED
Micro-Server Card -
Panther+
PCIECLK
Beep LED
NIC_SMBus & Alert#
Voltage
Sensor
I2C
NIC
EEPROM
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SEB A
HDD 0 HDD 1 HDD 2 HDD 3 HDD 4
HDD 5 HDD 6 HDD 7 HDD 8 HDD 9
HDD 10 HDD 11 HDD 12 HDD 13 HDD 14

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Power & SignalSignal Addl. Power
Mini-
SAS
Conn
USB
Conn
Debug
Header
HDD HDD HDD HDD HDD
HDD HDD HDD HDD HDD
HDD HDD HDD HDD HDD
Drive Plane Board
SFP+
Conn
(1)
SFP+
Conn
(1)
10G
Mezz
Card
LSI IOC
SAS3008
BMC
AST1250
Onboard VRs
EEPROM
Fan Controller
Fan Control Board Power Monitor
Fan LEDs
EEPROM
Thermal Sensors
Voltage Monitor
HDD LEDs
Ch A
Ch B
ECC DDR3-1600,
SO-DIMM x4,
POR: 32GB / 16GB
UART,
Port 80
12V
PCIe x8
PCIe x4
USB
Button
& LED
I2C
LSI EXP
SAS3x24R
Flash
(BIOS)
XDP
NIC EEPROM
FPGA
SMBus
LPC
GPIO
SPI
SPI
PWRON
SYSRST#
Clock Gen &
Clock Buffer
I2C
UART
EEPROM
Temp Sensor
USB
I2C
SAS x15
Onboard VRs
NC-SI
SAS x4
SAS
x4
I2C
x2
GPIOs,
PWM,
I2C
GPIO
LEDs
SATA3PCIe x4 /
SATA 3
mSATA
SSD
NGFF
Flash
CPU
Intel Avoton
2.4 GHz
(C2750, 8C /
C2550, 4C)
Voltage Mon
I2C
Mini-
SAS
Conn
SAS
x4

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22. System - I
Tray 1
Tray 2
Compute Node : HDD = 1 : 30
To 10G TOR
10G
External
Mini-SAS
Internal
Mini-SAS
External
Mini-SAS
Honey Badger Compute
Module
Knox SEB
Internal
Mini-SAS
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23. System - I
Compute Node : HDD = 1 : 120
To 10G TOR
10G
External
Mini-SAS
Knox SEB
Internal
Mini-SAS
System - II
Tray 1
Tray 2
Internal
Mini-SAS
External Mini-SAS
Honey Badger Compute
Module
Knox SEB
Knox SEB
Internal
Mini-SAS
System - III
Tray 1
Tray 2
Internal
Mini-SAS
External
Mini-SAS
Knox SEB
Knox SEB
Internal
Mini-SAS
System - IV
Tray 1
Tray 2
Internal
Mini-SAS
External Mini-SAS
Knox SEB
Knox SEB
Internal
Mini-SAS
Internal
Mini-SAS
External
Mini-SAS
External Mini-SAS
External
Mini-SAS
External Mini-SAS
Tray 1
Tray 2
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▪ System - I
Tray 1
Tray 2
Compute Node : HDD = 1 : 60
To 10G TOR
10G
External
Mini-SAS
Knox SEB
Internal
Mini-SAS
System - II
Tray 1
Tray 2
Internal
Mini-SAS
External
Mini-SAS
Honey Badger Compute
Module
Knox SEB
Knox SEB
Internal
Mini-SAS
Internal
Mini-SAS
External
Mini-SAS
External
Mini-SAS
System - I
Tray 1
Tray 2
Compute Node : HDD = 1 : 15
To 10G TOR
Honey Badger Compute
Module
10G
External
Mini-SAS
10G
External
Mini-SAS
Honey Badger Compute
Module
Internal
Mini-SAS
Internal
Mini-SAS

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