Intel SSR212MC2 - Storage Server Hard Drive Array User manual

Intel® Storage Server
SSR212MC2
Technical Product Specification
Revision 1.2
EPSD Technical Support & Services Group

Revision History Intel® Storage Server SSR212MC2 TPS
ii Revision 1.2
Revision History
Date Revision
Number
Modifications
April 24, 2007 1.0 Release copy.
May 23, 2007 1.1 Corrected Battery Backup product code, clarified expansion slots, corrected
RAID sku product code nomenclature.
July 10, 2007 1.2 Added AC Power consumption tables to section 2.1.

Intel® Storage Server SSR212MC2 TPS Disclaimers
Revision 1.2 iii
Disclaimers
Information in this document is provided in connection with Intel®products. No license, express
or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel
assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to
sale and/or use of Intel products including liability or warranties relating to fitness for a particular
purpose, merchantability, or infringement of any patent, copyright or other intellectual property
right. Intel products are not intended for use in medical, life saving, or life sustaining
applications. Intel may make changes to specifications and product descriptions at any time,
without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked
"reserved" or "undefined." Intel reserves these for future definition and shall have no
responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The Intel® Storage Server SSR212MC2 may contain design defects or errors known as errata
that may cause the product to deviate from published specifications. Current characterized
errata are available on request.
Intel system boards contain a number of high-density VLSI and power delivery components that
need adequate airflow to cool. Intel’s own chassis are designed and tested to meet the
intended thermal requirements of these components when the fully integrated system is used. It
is the responsibility of the system integrator that chooses not to use Intel developed system
building blocks to consult vendor datasheets and operating parameters to determine the amount
of air flow required for their specific application and environmental conditions. Intel Corporation
cannot be held responsible if components fail or the system board does not operate correctly
when used outside any of their published operating or non-operating limits.
Intel, Pentium, Itanium, and Xeon are trademarks or registered trademarks of Intel Corporation.
*Other brands and names may be claimed as the property of others.
Copyright © Intel Corporation 2003 - 2007.

Table of Contents Intel® Storage Server SSR212MC2 TPS
iv Revision 1.2
Table of Contents
1. Feature Summary .................................................................................................................1
1.1 System Components ............................................................................................... 5
1.2 System Board Feature Set ...................................................................................... 8
1.3 Serial Attached SCSI (SAS) Host Bus Adapter ....................................................... 9
1.4 Hot Swap Backplane ...............................................................................................9
1.5 Enclosure Management Card ................................................................................ 10
1.5.1 Summary Of Card Features................................................................................... 10
1.5.2 VSC410 Storage Management Controller ............................................................. 10
1.6 SAS Expander ....................................................................................................... 11
1.6.1 Embedded Processor ............................................................................................ 12
1.6.2 Memory Interface & Device Initialization................................................................ 12
Expander Port Configuration ................................................................................................... 13
1.7 Chassis Dimensions and Weight ........................................................................... 14
1.8 Back Panel I/O Ports and Features .......................................................................15
1.9 Front Panel and HDD Bays ................................................................................... 16
1.9.1 Front/Rear Panel Controls and Indicators .............................................................17
1.10 Fan Monitoring....................................................................................................... 18
1.10 Rack and Cabinet Mounting Options............................................................................... 18
2. Power Sub-System............................................................................................................. 19
2.1 Power Supply Enclosure........................................................................................19
2.1.1 Hot Swapping Power Modules............................................................................... 20
2.1.2 Power Supply Outputs ........................................................................................... 20
3. System Cooling Module..................................................................................................... 22
3.1 Fan Control ............................................................................................................ 22
4. Chassis Bays ...................................................................................................................... 23
4.1 Hard Disk Drive Bays............................................................................................. 24
4.1.1 Hard Disk Drive Carrier.......................................................................................... 25
5. Internal Boot Drives (optional).......................................................................................... 27
5.1 SAS........................................................................................................................ 27
5.2 SATA ..................................................................................................................... 27
6. System Interconnection..................................................................................................... 28
6.1 Internal Chassis Cables......................................................................................... 28

Intel® Storage Server SSR212MC2 TPS Table of Contents
Revision 1.2 v
6.1.1 SAS Expander/SAS HBA....................................................................................... 28
6.1.1.1 SAS Host Connctor................................................................................................ 28
6.1.2 Enclosure Management Card/Backplane .............................................................. 29
6.1.2.1 Power Connectors ................................................................................................. 29
6.1.2.2 Front Panel Cable.................................................................................................. 29
6.1.3 Intel®Server Board S5000PSL .............................................................................. 30
6.1.3.1 USB Header........................................................................................................... 30
6.1.4 Intel® RAID Controller SRCSAS144E ................................................................... 30
6.1.4.1 Battery Backup. ..................................................................................................... 30
6.2 External Rear I/O Panel Connectors ..................................................................... 31
6.3 External Front Panel Connectors........................................................................... 31
7. Regulatory Information ...................................................................................................... 32
6.1 Product Regulation Requirements..................................................................................... 32
7.1.1 Product Safety Compliance ................................................................................... 32
7.1.2 Product EMC Compliance – Class A Compliance ................................................. 32
7.1.3 Certifications / Registrations / Declarations ........................................................... 33
7.1.4 Component Regulation Requirement .................................................................... 33
7.1.5 Product Ecology Requirements ............................................................................. 34
7.2 Restriction of Hazardous Substances (RoHS)....................................................... 34
8. Environmental Limits......................................................................................................... 35
8.1 System Office Environment ................................................................................... 35
8.2 System Environmental Testing .............................................................................. 35
8.3 Environmental Limits ............................................................................................. 36
9. Calculated MTBF ................................................................................................................37
Glossary........................................................................................................................................ I

List of Figures Intel® Storage Server SSR212MC2 TPS
vi Revision 1.2
List of Figures
Figure 1. Intel® Storage Server SSR212MC2 ..............................................................................1
Figure 2. Intel® Storage Server SSR212MC2R Block Diagram ................................................... 5
Figure 3. Intel® Storage Server SSR212MC2 Block Diagram...................................................... 6
Figure 4. System Components .....................................................................................................7
Figure 5: Vitesse* VSC410 Block Diagram................................................................................. 11
Figure 6: PMC* PM8388 Block Diagram..................................................................................... 12
Figure 7: Back Panel I/O Ports ................................................................................................... 15
Figure 8: Chassis Front and Rear...............................................................................................16
Figure 9: Front Panel .................................................................................................................. 17
Figure 10: Rack Mounting........................................................................................................... 18
Figure 11: Power Supply Module................................................................................................ 20
Figure 12: Cooling Module.......................................................................................................... 22
Figure 13: Drive Carrier Removal ............................................................................................... 23
Figure 14: Hard Disk Drive Bays.................................................................................................25
Figure 15: Hard Drive Carrier Assembly ..................................................................................... 26

Intel® Storage Server SSR212MC2 TPS List of Tables
Revision 1.2 vii
List of Tables
Table 1: Intel® Storage Server SSR212MC2 Hardware Feature Summary ................................. 2
Table 2: Intel®Server Board S5000PSL features ......................................................................... 8
Table 3: Intel®RAID Controller SRCSAS144E features ............................................................... 9
Table 4: SATA/SAS Hot Swap backplane features ......................................................................9
Table 5: SXP Port Configuration.................................................................................................13
Table 6: Chassis Dimensions and Weight .................................................................................. 14
Table 7: Front/Rear Control Button Functions ............................................................................ 17
Table 8: Front LED Indicator Status............................................................................................17
Table 9: AC Input Current ........................................................................................................... 19
Table 10: AC Power Consumption (with SATA drives)............................................................... 19
Table 11: AC Power Consumption (with SAS drives) ................................................................. 19
Table 12: Enclosure DC Output Summary.................................................................................. 20
Table 13: Power Supply LED Indicators ..................................................................................... 21
Table 14: Drive Numbering ......................................................................................................... 24
Table 15: SAS 4i Host Connector ............................................................................................... 28
Table 16: EM Card PWR_A Connector ...................................................................................... 29
Table 17: EM Card PWR_B Connector ...................................................................................... 29
Table 18: Front Panel Cable ....................................................................................................... 29
Table 19: USB 2.0 Connector .....................................................................................................30
Table 20: System Office Environment Summary ........................................................................ 35
Table 21: Operating and Non-Operating Environmental Limits .................................................. 36
Table 22: Component MTBF Numbers ....................................................................................... 37

List of Tables Intel® Storage Server SSR212MC2 TPS
viii Revision 1.2
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Intel® Storage Server SSR212MC2 Feature Summary
Revision 1.2 1
1. Feature Summary
This Technical Product Specification provides detailed information about the hardware
components of the Intel® Storage Server SSR212MC2.
The Intel® Storage Server SSR212MC2 is available in two configuration/sku’s: with or without
an Intel® RAID Controller SRCSAS144E (product codes SSR212MC2R and SSR212MC2,
respectively), and includes a 2U chassis, Intel®Server Board S5000PSL with support for either
one or two Dual-Core (5100 sequence) or Quad-Core (5300 sequence) Intel®Xeon®
processors, twelve SATA/SAS hard disk drive carriers, dual Intel® PRO/1000 Network
connections, and a single 850 W power supply (dual redundant 1+1 capable).
Intel®-based system boards and chassis have feature sets designed to support the high-density
storage market.
Figure 1. Intel® Storage Server SSR212MC2

Feature Summary Intel® Storage Server SSR212MC2
2 Revision 1.2
Table 1: Intel® Storage Server SSR212MC2 Hardware Feature Summary
Raw Storage Capacity Expandable to 3.0 TB – using twelve 250 GB drives.
Expandable to 4.8 TB – using twelve 400 GB drives.
Expandable to 6.0 TB – using twelve 500 GB drives.
Expandable to 9.0 TB – using twelve 750 GB drives
Expandable to 12.0 TB – using twelve 1 TB drives
External Drive Bays 12 Hot Pluggable.
Hard Disk Drive
Supported (external
storage)
3.5 inch SATA , SAS.
NOTE: For specific drive family and capacities supported, please
refer to the SSR212MC2 Tested Hardware and OS List (THOL).
Hard Disk Drive
Supported (internal
boot)
2.5 inch SATA, SAS.
NOTE: For specific drive family and capacities supported, please
refer to the SSR212MC2 Tested Hardware and OS List (THOL).
Processor Support for one or two Dual-Core (5100 sequence) or Quad-Core (5300
sequence) Intel®Xeon®processors.
NOTE: The Intel® Storage Server SSR212MC2 does not ship with
processors installed. Please refer to the SSR212MC2 Configuration
Guide for a list of supported processors.
Memory Capacity Expandable to 32 GB maximum.
NOTE: The Intel® Storage Server SSR212MC2 does not ship with
memory installed. Please refer to the SSR212MC2 Tested Memory
List for a list of supported memory.
Memory Type FBDIMM.
DIMM Slots Eight.
Enclosure Controller On-board Vitesse** VSC410 micro-controller.
Temperature Sensor Two temperature sensors are located on the backplane and baseboard
that allows drive cage temperature monitoring by enclosure management.
Network Connectivity Dual GB Ethernet.
Front Panel
Buttons and Switches 3x: Power, Reset, ID.
LEDs 3x: Fault, ID, Power.
Hard Disk Drive Carrier
LEDs 2x: Activity, Fault.
Back Panel
Buttons and Switches 2x: ID LED button, NMI button.
I/O Connectors 1x DB-9 Serial port, 2x RJ-45 Ethernet ports, 1x DB-15 Video connector,
4x 2.0 USB port, 1x Stacked PS/2 Mouse/Keyboard connector.
Power Receptacle 1x IEC AC per installed power supply module.
Chassis
Form Factor 2U rack-mount chassis
Height 87.9 mm, 3.46 in
Width 447 mm, 17.6 in (across body of chassis)
Depth 707 mm, 27.83 in (from rack posts to max extremity of chassis)

Intel® Storage Server SSR212MC2 Feature Summary
Revision 1.2 3
Weight As shipped (zero drives): approximately 20 kg, 44 pounds
Fully configured (twelve drives): approximately 30 kg, 66 pounds
Shipping container: 3.2 kg, 7 pounds
Color Black
Rack Support Rail mount, compatible with four-post rack mount only, and compliant to
the SSI Server Rack specification and EIA 310-D.
System Cooling
Fans Chassis includes ten hot-swappable redundant system fans for cooling the
hard drives, baseboard and SAS Host Bus Adapter (HBA) card.
Power
Configuration 850 W continuous, 1+1 redundant power supplies. Intel Storage System
SSR212MC2 ships with one 850W power supply
Environment
Ambient Temperature Operating (system): 10 degrees Celsius to +35 degrees Celsius, with
maximum change not to exceed 10 degrees Celsius per hour; non-
operating (system): -40 degrees Celsius to +70 degrees Celsius.
Relative Humidity Non-operating: 90% @ 35 degrees Celsius non-condensing
Acoustics < 7.0 BA (rack-mount) in an idle state in an normal office environment
(23 degrees Celsius)
Electrostatic Discharge 15 KV per Intel test specification
Safety Compliance
Argentina IRAM
Canada UL60950 – CSA (60950 (UL and cUL)
China GB4943- CNCA Certification
Europe, CE Mark EN60950 (complies with73/23/EEC)
Germany GS License
International IEC60950 (CB Report and Certificate)
Nordic Countries EMKO-TSE (74-SEC) 207/94
Russia GOST 50377-92
United States UL– 60950 – CSA 60950 (UL and cUL)
Electromagnetic Capability (Class A) (EMC)
Australia/New Zealand AS/NZS 3548 (based on CISPR 22)
Canada ICES-003
China GB 9254 - CNCA Certification
GB 17625 - (Harmonics) CNCA Certification
Europe, CE Mark
EN55022; EN55024 & EN61000-3-2;-3-3 (complies with 89/336/EEC)
International CISPR 22
Japan VCCI
Korea RRL, MIC 1997-41 & 1997-42
Russia GOST 29216-91 & 50628-95
Taiwan CNS13438
United States FCC, Part 15
RoHS European Directive 2002/95/EC

Feature Summary Intel® Storage Server SSR212MC2
4 Revision 1.2
1.1 System Components
A block diagram of the SSR212MC2R sku (with RAID card) is shown below.
Figure 2. Intel® Storage Server SSR212MC2R Block Diagram

Intel® Storage Server SSR212MC2 Feature Summary
Revision 1.2 5
A block diagram of the SSR212MC2 sku (without RAID card) is shown below.
Enclosure Management Card
BACK
PLANE
Cold
Presence
Drive
Pin11
1.5 / 3Gbps (Data)
Alarm
High Power
Connector
VSC410
Enclosure
Controller
SAS / SATA
SAS / SATA
SAS / SATA
SAS / SATA
4 LANE
SAS / SATA
SAS / SATA
SAS / SATA
SAS / SATA
SAS / SATA
SAS / SATA
SAS / SATA
SAS / SATA
12 x Drive
Activity
12 x Drive
Fault
12
12
4 LANE4 LANE
GPIO
Expander
SPI
FLASH
FAN
CONTROL
GPIO
10 x FAIL LED
10 x PRESENT
10 x TACHO
5 x PWM
12
12
Temp
Sensor
EEPROM
High Power
Connector
10 x FAN (5 banks)
individually hot plugable
Memory
+12V
Z
I
F
Control SSI
+12V
+5V+5V
Remote
(Ops)
serial
ICE
RS232USB 2.0
LEDs
(Ops)
I2C
Master
I2C
Slave
I2C
Master
SES
23
SAS
EXPANDER
4 Lane
4 LANE
SES
4 Lane4 Lane
I2C
Slave
IPMI
Header
“Pass Thru” Cable
SMBus or BMC
Power Button
Reset Button
Intrusion Switch
Rear ID LED
internal COM header
ATX
PMC
24 port
Ops Panel
PWR
Z
I
F
U
S
B
PWR FAULT ID
Temp
Sensor
RST ID
Flex Cable
PDB PSU 850W
Dual Redundant
POWER &
PSU Status
3 x +12V Rails
+5V, +3.3V Rails
+5V Standby
4 x PSU Status
High Power
Connector
PSMI
Figure 3. Intel® Storage Server SSR212MC2 Block Diagram

Feature Summary Intel® Storage Server SSR212MC2
6 Revision 1.2
The components included with the storage system are diagrammed below.
Figure 4. System Components

Intel® Storage Server SSR212MC2 Feature Summary
Revision 1.2 7
1.2 System Board Feature Set
The Intel®Server Board S5000PSL provides the following feature set, as implemented in the
Intel Storage System SSR212MC2:
Table 2: Intel®Server Board S5000PSL features
Feature Description
Processors Socket J (771-pin LGA sockets) supporting one or two Dual-Core (5100 sequence)
or Quad-Core (5300 sequence) Intel®Xeon®processors, with system bus speeds of
1066 MHz and 1333 MHz.
NOTE: The Intel® Storage Server SSR212MC2 does not include processors. See the SSR212MC2
Configuration Guide for a list of supported processors.
Memory Eight DIMM sockets supporting fully buffered DIMM technology (FBDIMM) memory.
240-pin DDR2-533 and DDR2-677 FBDIMMs can be used.
NOTE: The type of memory selected (DDR2-533 or DDR2-667) should be matched with the type of
processor used. See the SSR212MC2 Tested Memory List for a list of supported memory modules.
Chipset Intel®S5000P chipset, consisting of:
Intel®5000P Memory Controller Hub, and Intel®ESB2-E I/O Controller.
Video 2D Graphics Accelerator: ATI* ES1000 Video Controller w/ 16MB of video DDR
SDRAM memory.
Connectors/
Headers
Stacked PS/2* ports for keyboard and mouse
Stacked video / DB9 serial port A connector
Two RJ45 / 2xUSB connectors for 10 / 100 / 1000 Mb and USB 2.0 support
One USB 2x5 pin header, which supports two USB ports
One USB port Type A connector
One DH10 serial port B header
Two SATA connectors and four SAS connectors
One ATA100 40-pin connector
SSI-compliant front panel header
SSI-compliant 24-pin main power connector, supporting the ATX-12 V standard
on the first 20 pins
Expansion Slots:
Add-in PCI, PCI-
X*, PCI Express*
Cards
Two low profile PCI-X 64-bit slot with up to 100/133-MHz support (bus segment
PXA) NOTE: one slot occupied by the BBU, if ordered with an Intel® RAID Controller
SRCSAS144E (product code SSR212MC2R).
Two low profile PCI Express* x4 slots (bus segments PE1 & PE2)
Two low profile PCI Express* x8 slots (bus segments PE5 & PE7) NOTE: one
slot occupied if ordered with an Intel® RAID Controller SRCSAS144E (product code
SSR212MC2R).
LAN Two 10 / 100 / 1000 Intel®82563EB PHYs supporting Intel®I/O Acceleration
Technology (Intel® I/OAT).
Please refer to the Intel®Server Board S5000PSL Technical Product
Specification available at http://support.intel.com for more information on the
Storage System SSR212MC2’s server board.

Feature Summary Intel® Storage Server SSR212MC2
8 Revision 1.2
1.3 Serial Attached SCSI (SAS) Host Bus Adapter
The Intel® Storage Server SSR212MC2R sku ships with a single Intel®RAID Controller
SRCSAS144E, x4 PCI Express to SAS Host Bus Adapter (HBA). The SAS HBA board provides
the following feature set:
Table 3: Intel®RAID Controller SRCSAS144E features
Feature Intel®RAID Controller SRCSAS144E
RAID levels 0, 1, 5, 10, 50
Number of devices Up to 32 devices per controller
NOTE: Up to 12 front accessible carrier mounted hard disk drives are supported in the
Intel® Storage Server SSR212MC2. The remaining 20 devices may be supported via the
external SAS connector & external JBOD.
Device types SAS or SATA hard drives
Data transfer rate 300 MB/s per port
PCI bus x4 PCI Express*
Memory 128 MB ECC DDR2 400 SDRAM Integrated on the Controller
Battery backup External battery module (AXRIBBU1)
SAS connector One internal SSF8087 connector and one external SFF8470 connector.
IOP Intel®80333 I/O processor, which performs hardware exclusive OR (XOR) assistance
Card dimensions 7.71 inches by 2.525 inches
Serial port 4-pin serial debug (requires transceiver)
Compatible devices 32 physical devices, 64 logical drive, mixed capacity, mixed SATA and SAS (not
recommended)
Firmware 4 Mbit in flash ROM
Please refer to the Intel® RAID Controller SRCSAS144E Hardware Users Guide
available at http://support.intel.com for more information.
1.4 Hot Swap Backplane
The SATA/SAS Hot Swap backplane board provides the following feature set:
Table 4: SATA/SAS Hot Swap backplane features
Feature Description
Supports up to 12
drives.
Slots provided for docking up to twelve 1.5 or 3.0 Gigabits per second (Gb/s)
SAS or SATA hot swap hard drives
Enclosure
Management
Controller
•On-board Vitesse** VSC055 micro-controller with 256Kbit external SRAM
memory2 SAS Host Controller I2C Interfaces
•SATA and SAS extension compatibility
•Hot swap support for up to 12 SAS or SATA Drives
FRU/Configuration
SEEPROM
A Vitesse** VSC055* provides a serial EEPROM memory for storage of
configuration and product FRU information.

Intel® Storage Server SSR212MC2 Feature Summary
Revision 1.2 9
Feature Description
Drive Status LEDs Support for separate drive status LEDs (via pin 11) that are visible at the front of
each drive carrier. These LED’s indicate the following:
•Green LED –
oON, drive spinning, but idle.
oON, no drive present.
oBLINKING, I/O activity.
oOFF, drive not spun up.
•Amber LED –
oON, drive fault.
1.5 Enclosure Management Card
1.5.1 Summary Of Card Features
•Vitesse* VSC410 Baseboard and Storage Management Controller (SEP)
oembedded 32-bit RISC core with 8Kbytes of SRAM
oSPI memory interface
oFirmware Upgradeability through serial port interface
oI
2C/IPMI communication with ATX motherboard
oI
2C/SES communication with SAS Expander Card
oI
2C communication to local management peripherals
•8 Mbit of Serial Flash Memory for code storage
•Drive fault and presence detection
•Support for up to 10 hot-swap fan modules with fault and presence detection
•Closed-loop thermal control through temperature monitoring and fan speed control
•no dependency on host system BIOS and software
•PSU status monitoring
•audible alarm control
•EEPROM for FRU data storage
•JTAG test & debug access
•dedicated Card ID and Firmware ID Bit Monitoring
•connectivity hub to backplane, ops panel, host system and PSU
•chassis intrusion switch
1.5.2 VSC410 Storage Management Controller
The VSC410 is a highly integrated controller for baseboard, storage or embedded system
management. It contains a high-performance 32-bit RISC engine, four master/slave mode Two-
Wire Serial interfaces, two general purpose UART, two 32-bit timers, up to 40 bits of general
purpose I/O, 8Kbytes of high-speed SRAM, a SPI memory interface and an EJTAG port for
firmware debug.

Feature Summary Intel® Storage Server SSR212MC2
10 Revision 1.2
Figure 5: Vitesse* VSC410 Block Diagram
A PLL is used to generate the internal core clock of 40.0MHz from an external 4.0MHz clock
source or crystal. Additional external component are limited to a single SPI Flash memory
device and Two-Wire Serial peripherals dedicated to system management functions.
1.6 SAS Expander
The PMC-Sierra* PM8388 SXP 24×3G device is a 24-port SAS Expander device featuring low
latency connection arbitration, table routing, arbitrary SAS wide ports, SAS SSP/STP targets,
integrated RISC processor for SAS SMP functions and SES support.
All target ports support spin-up control and the STP bridge function allowing either a SAS or
SATA target device to be attached. The PM8388 device supports table routing of up to 1024
entries, direct routing and subtractive routing methods. The non-blocking crossbar in the data
path allows any-port to any-port connections including arbitrary wide port configurations.
The PM8388 device provides in-band access to the Expander internal state information via
proprietary commands within the integrated SMP function. The PM8388 device provides three
multi-master TWI interfaces with independent reset for device configuration or control of
peripheral devices. One UART interface is provided for debugging support.

Intel® Storage Server SSR212MC2 Feature Summary
Revision 1.2 11
Figure 6: PMC* PM8388 Block Diagram
1.6.1 Embedded Processor
The embedded RISC Processor is a MIPS Technologies* MIPS4K with an EJTAG debugging
interface.
It supports the SMP protocol and SES and is connected as a virtual port with the device base
SAS address. SMP commands are uploaded from Flash memory.
1.6.2 Memory Interface & Device Initialization
The PM8388 device has a 16-bit wide asynchronous memory interface. It is able to address 4
banks of Flash or SRAM of 2 Mbytes each. The memory banks can be 8-bit or 16-bit wide.
The Flash Memory Interface provides a way to configure device features during the reset
sequence. After system reset the processor loads an 8-Kbyte initialization string.
This initialization string contains information such as the SAS base address of the PM8388
device, identification of a subtractive port, per port configuration of the transmitter pre-emphasis
level, per port configuration of receiver equalization level, per port configuration of the transmit
swing, HDD spin-up delay values, HDD spin-up delay interval values, GPIO control and
manufacturer specific information.

Feature Summary Intel® Storage Server SSR212MC2
12 Revision 1.2
Optionally, the initialization string can point to an external EEPROM. This EEPROM is used to
store initialization parameters that are card-specific, like the SAS Base address. Once read, the
parameters from the EEPROM will replace those from Flash memory.
Expander Port Configuration
The PM8388 supports 24 ports. 12 of those ports are connected to disk drives with a fixed port-
drive slot mapping. Four ports are used for host connection to a SAS HBA in the server sub
system. Four other ports are reserved for expansion purpose and are routed to a dedicated
SAS-4i connector on the expander card. The remaining four ports are not used and must be
disabled.
Table 5: SXP Port Configuration
PM8388 Connects To PM8388 Connects To
Port0 Drive 1 Port12 Expansion 1
Port1 Drive 0 Port13 Drive 7
Port2 Drive 2 Port14 Host 0
Port3 Drive 3 Port15 Drive 10
Port4 N/C Port16 Drive 5
Port5 N/C Port17 Expansion 2
Port6 N/C Port18 Drive 6
Port7 Expansion 3 Port19 Host 1
Port8 Expansion 0 Port20 Drive 9
Port9 Drive 4 Port21 Drive 8
Port10 N/C Port22 Host 2
Port11 Drive 11 Port23 Host 3