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Common Layers, RAID Firmware - drivers

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Intel® Integrated RAID Controller SRCS14L 3.1.3 3.1.3.1 3.1.3.2 3.1.3.3 3.1.3.4 3.1.4 Common Layers PCI BIOS The PCI BIOS is the Expansion ROM software as defined in the PCI specification. It performs IIR initialization from host system memory during POST. IIR API The IIR API is a C++ class library consisting of OS-independent classes and methods. This layer encapsulates sequences of lower level C library API functions and builds OS independent data structures used for communicating with the HBA. This API relies on an OS dependent layer that communicates with the local driver (if one is present) or a remote driver via the TCP/IP or IPX/ SPX network protocol. Operating System Driver The IIR device driver is the OS specific driver that communicates between the host resident application and the IIR HBA using the IIR communications protocol. RAID Configuration Service The IIR Service / IIRD allows remote access to the IIR HBA. It runs as a service on Windowsbased systems and as a daemon on Unix-based systems. In order to use the remote access capability, an administrator has to create user accounts. The passwords for these accounts are encrypted for security. RAID Firmware The IIR firmware is composed of multiple software layers allowing for maximum flexibility, reuse and maintainability. At the highest level is a host interface abstraction layer in the common firmware that is also composed of multiple internal layers of service and library modules. The I/O Device pictured next to the firmware (Figure 4: RAID Software Stack Architecture Block Diagram) also communicates over an abstraction layer allowing for elegant integration of multiple I/O device types from different vendors. 16 Technical Product Specification

Section	Page
Intel® Integrated RAID Controller SRCS14L	1
Introduction 1	5
1.1 Acronyms	5
Table 1. Common Acronyms (Sheet 1 of 2)	5
1.2 Documentation Conventions	6
1.3 Product Overview	6
1.4 Operating System Support	6
1.5 List of Features	6
Hardware 2	8
2.1 Physical Layout	8
Figure 1. SRCS14L RAID Controller Physical Layout	8
2.2 Major Components	8
2.2.1 Intel® 80303® Intelligent I/O Processor	8
2.2.1.1 Processor Core	9
2.2.1.2 PCI-to-PCI Bridge	9
2.2.1.3 Memory Controller Unit	9
2.2.2 Intel® Smart 3 FlashFile™ Flash Memory	9
2.2.3 SDRAM (Cache)	9
2.2.4 SATA Controllers	9
2.2.5 Audible Alarm	9
2.2.6 SATA Connectors	10
2.2.7 PCI Interface	10
2.2.8 SRCS14L Jumpers	10
Figure 2. Jumper Settings and Pin Numbers	10
Table 2. Controller Jumper Settings	11
2.2.9 Diagnostic Features	11
Figure 3. LED Labels and Colors	11
Table 3. LED Descriptions	11
Table 4. Beep Sequences	12
2.3 Architecture Features (HW)	13
Table 5. Hardware Architecture	13
2.4 Electrical Characteristics	13
Table 6. Electrical Specifications	13
2.5 Environmental Specifications	13
Table 7. Environmental Test Results	13
2.6 Supported Hard Drive Technology	13
Software 3	14
3.1 Software Architecture Overview	14
Figure 4. RAID Software Stack Architecture Block Diagram	14
3.1.1 User Interface	15
3.1.1.1 Storage Console	15
3.1.1.2 Storage Console+	15
3.1.2 System Management	15
3.1.2.1 RAID Mail Utility	15
3.1.2.2 SNMP Extension Agent	15
3.1.3 Common Layers	16
3.1.3.1 PCI BIOS	16
3.1.3.2 IIR API	16
3.1.3.3 Operating System Driver	16
3.1.3.4 RAID Configuration Service	16
3.1.4 RAID Firmware	16
RAID Functionality and Features 4	17
4.1 Hierarchy	17
4.1.1 Level 1: Physical Drives	17
4.1.2 Level 2: Logical Drives	17
4.1.3 Level 3: Array Drives	17
4.1.4 Level 4: Host Drives	18
4.1.5 RAID Host/Array Drive Statuses	19
Table 8. Host Array Drive Statuses	19
4.1.6 Logical Drive Statuses	20
Table 9. Logical Drive Statuses	20
4.1.7 RAID Controller Drive Limitations (Host, Array, Logical, and Physical)	20
Table 10. RAID Controller Drive Maximum Limitations (SRCS14L)	20
4.2 Utilities and Tools	21
Table 11. Utilities And Tools	21
4.3 RAID Features	22
4.3.1 RAID Level Support	22
Table 12. Supported RAID Levels	22
4.3.2 Caching	22
4.3.2.1 Controller Cache Selections	23
4.3.2.2 Physical Disk Cache Selections	23
Table 13. Supported Cache Settings	23
4.3.3 Hot Fix (Spare) Disks	24
Table 14. Example of a 9GB Pooled Hot Fix Drive Selected to Protect Four Raid Array Drives	24
4.3.4 Auto-detection of Hot-Plug Disk Drives in a Non-Intelligent Drive Enclosure	25
4.3.5 Auto-declare Hot Fix (Spare) Drive	25
4.3.6 RAID Array Drive Roaming	25
4.3.7 On-line RAID Array Configurations	25
4.3.7.1 Capacity Expansion Without Reboot	25
4.3.7.2 RAID Level Migration	26
4.3.7.3 Data Strip Size Configurable per RAID Array	26
4.3.8 Background Initialization and Instant Availability	27
4.3.9 PCI Hot Plug	27
Certifications and Supported Technologies 5	28
5.1 OS Certifications	28
Table 15. OS Certification Requirements	28
5.2 Electronic Regulatory Agencies Certifications (Hardware)	29
Table 16. Electronic Equipment Regulatory Certifications	29
5.3 Supported Specifications and Standards	31
Table 17. Supported Standards and Specifications	31
Technical Drawings and Diagrams 6	32
Figure 5. Controller PBA Drawing, Front View	32
Figure 6. Controller PBA Drawing, Back View	32
Appendices 7	33
7.1 Referenced Documentation	33
Table 18. Referenced Documentation	33

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Technical Product Specification

Intel

Integrated RAID Controller SRCS14L

3.1.3

Common Layers

3.1.3.1

PCI BIOS

The PCI BIOS is the Expansion ROM software as defined in the PCI specification.

It performs

IIR initialization from host system memory during POST.

3.1.3.2

IIR API

The IIR API is a C++ class library consisting of OS-independent classes and methods. This layer

encapsulates sequences of lower level C library API functions and builds OS independent data

structures used for communicating with the HBA. This API relies on an OS dependent layer that

communicates with the local driver (if one is present) or a remote driver via the TCP/IP or IPX/

SPX network protocol.

3.1.3.3

Operating System Driver

The IIR device driver is the OS specific driver that communicates between the host resident

application and the IIR HBA using the IIR communications protocol.

3.1.3.4

RAID Configuration Service

The

IIR Service / IIRD

allows remote access to the IIR HBA. It runs as a service on Windows-

based systems and as a daemon on Unix-based systems. In order to use the remote access

capability, an administrator has to create user accounts. The passwords for these accounts are

encrypted for security.

3.1.4

RAID Firmware

The IIR firmware is composed of multiple software layers allowing for maximum flexibility, re-

use and maintainability. At the highest level is a host interface abstraction layer in the common

firmware that is also composed of multiple internal layers of service and library modules.

The I/O Device pictured next to the firmware (

Figure 4: RAID Software Stack Architecture Block

Diagram

) also communicates over an abstraction layer allowing for elegant integration of multiple

I/O device types from different vendors.