Intel SRCU32 - RAID Controller User Manual
Intel
®
RAID Controller SRCU32
User’s Guide
Order Number: A77949-004
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.
Contents
1 Introduction and General Information........................................................ 13
Intended Audience..............................................................................................................13
RAID Levels ....................................................................................................................... 13
RAID 0 - Data Striping ............................................................................................... 13
RAID 1 - Disk Mirroring/Disk Duplexing ..................................................................... 14
RAID 4 - Data Striping with a Dedicated Parity Drive................................................. 15
RAID 5 - Data Striping with Striped Parity.................................................................. 15
RAID 10 - Combination of RAID 1 and RAID 0.......................................................... 16
Chaining............................................................................................................................. 17
Configuring a Chaining Set Using StorCon................................................................ 17
Configuring a Chaining Set Using StorCon+..............................................................17
Levels of Drive Hierarchy Within the Intel® RAID Controller SRCU32 Firmware................18
Level 1....................................................................................................................... 18
Level 2....................................................................................................................... 18
Level 3....................................................................................................................... 18
Level 4....................................................................................................................... 19
Transparency of Host Drives..............................................................................................19
Using CD-ROMs, DATs, Tapes, etc........................................................................... 20
2 Getting Started.............................................................................................. 21
What is the Intel RAID Controller SRCU32 Firmware?........................................................21
Standard Firmware.................................................................................................... 21
RAID Hardware Installation and Setup ............................................................................... 22
Minimum Hardware Requirements............................................................................. 22
Installing and Removing the SDRAM......................................................................... 22
Installing the SDRAM........................................................................................ 22
Removing the SDRAM...................................................................................... 23
Install the Intel RAID Controller SRCU32 in the Intel® Server Board ........................ 23
Programming the FLASH Memory............................................................................. 24
SCSI Termin a tion ...................................................................................................... 24
Termination....................................................................................................... 24
Setting the Termination Mode of the Intel RAID Controller SRCU32 ................. 25
Configurable SCSI Parameters.................................................................................. 25
Choosing a Configuration.......................................................................................... 26
How Many Hard Drives Should Be Integrated Into the Disk Array?................... 26
What Level of Redundancy is Needed?.............................................................26
Are Hot Fix Drives Needed?.............................................................................. 27
Intel RAID Controller Hardware Features................................................................... 27
Architecture Features (HW)............................................................................... 27
Environmental Characteristics........................................................................... 28
Hard Drive Connectivity (SCSI Specifics)........................................................................... 28
Supported Hard Drive Technology............................................................................. 28
Support for Non-Hard-Disk-Drive SCSI Devices (Non-Direct-Access Devices).......... 29
Array Roaming Compatibility...................................................................................... 30
Number of Supported Devices .......................................................................... 30
iii
SCSI Connectors ....................................................................................................... 30
LED Indicators.................................................................................................................... 31
Function Check.......................................................................................................... 31
Channel Mode........................................................................................................... 31
PCI Bus Clock ........................................................................................................... 31
Jumpers ............................................................................................................................. 31
External LED Connectors .......................................................................................... 32
Terminator Power...................................................................................................... 32
Acoustical Alarm................................................................................................................. 32
Silencing the Acoustical Alarm in StorCon................................................................. 32
Silencing the Acoustical Alarm in StorCon+............................................................... 32
Compatible Intel RAID Controllers...................................................................................... 33
Optional RAID Features Implemented in the Intel RAID Controller SRCU32...................... 33
Adapter Device Limitation Support............................................................................. 33
PCI Hot Plug.............................................................................................................. 33
Operational States of an Intel RAID Controller SRCU32 Firmware Disk Array.................... 34
Operational States for RAID 4/5.................................................................................34
Methods for Hard Drive Replacement................................................................................. 36
Intel RAID Controller SRCU32 Quick Start......................................................................... 37
Make an OS Instal l a tion Diskette............................................................................... 37
Install the SDR A M..................................................................................................... 38
Install the Intel RAID Controller SRCU32 in the Intel Server Board............................ 38
Use StorCon to Create a RAID Volume..................................................................... 38
Set the BIOS Boot Order ........................................................................................... 41
Install the Operating System (choose from Windows 2000 or Red Hat Linux 7.1)...... 42
Installing Windows 2000.................................................................................... 42
Installing Red Hat Linux 7.1...............................................................................43
Alternative Method to Creating an Intel RAID Controller SRCU32 Installation Diskette....... 44
Windows NT†............................................................................................................ 44
Windows 2000........................................................................................................... 44
SCO UnixWare†........................................................................................................ 44
How to Use Auto Hot Plug with SAF-TE............................................................................. 45
Setting Up Auto Hot Plug........................................................................................... 45
3 Installing Microsoft Windows NT or Windows 2000.................................. 47
Operating System Installation Procedures.......................................................................... 47
Pre-Installation Requirements Checklist .................................................................... 47
Minimum Hardware Requirements.................................................................... 47
Minimum Software Requirements......................................................................48
Installing an Operating System onto a RAID Volume or Single Disk ......................... 48
Windows 2000 / NT 4.0 Installation Procedures................................................ 49
Installing the OS................................................................................................ 49
Installing an OS onto an IDE or SCSI Hard Drive Not Attached to the Intel RAID
Controller SRCU32..................................................................................... 50
Windows 2000 / NT 4.0 Installation Procedures................................................ 50
Upgrading an OS (Windows NT 4.0 to Windows 2000) that is Currently Installed
on a RAID Volume or Single Disk ............................................................... 52
Installation to an Existing OS.............................................................................53
Installing Drivers for the Intel RAID Controller SRCU32 ...................................................... 54
iv Intel RAID Controller SRCU32 User’s Guide
4 Installing Linux ............................................................................................. 55
Before you Begin................................................................................................................55
Available Drivers and Tools on the Intel RAID Controller SRCU32 Software Suite CD-
ROM.................................................................................................................... 55
Assumptions About Path Names ............................................................................... 55
General Installation Notes .................................................................................................. 56
Minimum Hardware Requirements............................................................................. 56
Minimum Software Requirements.............................................................................. 56
Installing Red Hat Linux 7.x on a RAID Volume (Host Drive)............................................. 56
Installing an Intel RAID Controller SRCU32 onto an Existing Linux Server......................... 57
Installation of Driver Sources from the Intel RAID Controller SRCU32 CD-ROM........ 57
GDT Driver Parameters...................................................................................................... 58
Reservation of SCSI Devices..................................................................................... 58
Further Driver Parameters......................................................................................... 59
Installation of Intel RAID Controller SRCU32 StorCon Monitoring Utility............................. 60
Installation of StorCon from the Intel RAID Controller SRCU32 CD-ROM.................. 60
Using StorCon Monitoring Utility................................................................................ 60
Remote Monitoring with the Intel® SRCD Remote Access Service.................................... 61
SRCD Installation Instructions from the Intel RAID Controller SRCU32 CD-ROM...... 61
5 Installing Novell Netware............................................................................. 63
Pre-Installation Requirements Checklist............................................................................. 63
Minimum Hardware Requirements.................................................................... 63
Minimum Software Requirements......................................................................63
New Installation of NetWare 4.2 and 5.1............................................................................. 64
New Installation of NetWare 4.2 with the SRCRX.HAM Driver................................... 64
New Installation of NetWare 5.xx with the SRCRX.HAM Driver................................. 64
Adding Intel RAID SRCU32 Controller(s), Drivers, and/or StorCon to an Existing NetWare
Installation....................................................................................................................65
Installing the Intel RAID Controller SRCU32 Driver Package..................................... 65
Installing the Intel RAID Controller SRCU32 Tools Kit Package................................. 66
Configuring To o ls for Remote Access............................................................... 66
ASPI Support for NetWare 4.2 and 5.1............................................................................... 66
Tips and Tricks................................................................................................................... 67
Optimize Data Throughput......................................................................................... 67
“Cache Memory Allocator Out of Available Memory” in PCI-ISA Systems.................. 68
Installing NetWare 4.1 - Wrong Drive Name.............................................................. 68
NetWare-Server Not Stable When Under High Utilization.......................................... 68
Intel RAID Controller SRCU32 and Non-ASPI Compatible Controllers....................... 69
Last Status Information.............................................................................................. 69
Adding Additional Capacity After an Online Capacity Expansion ............................... 69
Notes on ARCserve†.......................................................................................................... 70
6 Installing UnixWare ...................................................................................... 71
General Installation Notes .................................................................................................. 71
Minimum Hardware Requirements............................................................................. 71
Minimum Software Requirements.............................................................................. 71
Installing the Intel RAID Controller SRCU32 as an Additional Controller............................. 72
No Intel RAID Controller SRCU32 Has Yet Been Configured for UnixWare............... 72
Contents v
An Intel RAID Controller SRCU32 Has Already Been Configured for UnixWare.........72
Installing an Operating System onto a Host Drive or Single Disk........................................ 72
Installation of the RAID Software Suite for UnixWare......................................................... 73
Coordinates of SCSI Devices............................................................................................. 73
Host Adapter Number (HA)........................................................................................ 73
UnixWare Bus Number, Target ID and LUN...............................................................74
Configuration Example...................................................................................... 74
Additional Information......................................................................................................... 75
7 Storage Console...........................................................................................77
StorCon Features............................................................................................................... 77
StorCon Is.......................................................................................................................... 77
Loading StorCon.................................................................................................................78
Loading the StorCon Program Under NetWare.......................................................... 78
Loading StorCon on a Fileserver ............................................................................... 78
Loading StorCon on a Workstation............................................................................ 78
Loading the StorCon Program Under Windows NT/2000........................................... 79
Uninstalling the RAID Software Suite......................................................................... 81
Loading the StorCon Program Under Windows 95/98................................................ 82
Loading StorCon Under Linux.................................................................................... 82
Loading StorCon Under SCO UnixWare.................................................................... 83
The StorCon Program........................................................................................................ 83
Select Interface.......................................................................................................... 84
Select Controller........................................................................................................ 85
Monitor and Express / Advanced Setup..................................................................... 86
Monitor Menu.................................................................................................... 86
Express Setup / Advanced Setup Menus .......................................................... 86
Monitor Menu ..................................................................................................................... 87
View Statistics ........................................................................................................... 87
View Events............................................................................................................... 88
View Hard Drive Info.................................................................................................. 89
The Retries Counter.......................................................................................... 89
The Reassigns Counter..................................................................................... 89
The Grown Defects Counter.............................................................................. 90
Last Status........................................................................................................ 90
Save Information........................................................................................................ 91
Express Setup.................................................................................................................... 92
Configure Host Drives................................................................................................ 92
Host Drive States.............................................................................................. 92
Configure New Host Drive................................................................................. 94
Host Drive Options............................................................................................ 96
Repair Array Drives ................................................................................................... 98
Advanced Setup............................................................................................................... 100
Configure Controller................................................................................................. 100
Controller Settings........................................................................................... 100
Firmware Update............................................................................................. 101
Intelligent Fault Bus......................................................................................... 101
Non-Intelligent Enclosures............................................................................... 102
Advanced Settings.......................................................................................... 103
vi Intel RAID Controller SRCU32 User’s Guide
Clear Log Buffer.............................................................................................. 104
Configure Physical Devices..................................................................................... 104
Keyboard Commands......................................................................................104
SCSI Parameter / Initialize .............................................................................. 105
Check Surface................................................................................................. 106
View Status/Defects........................................................................................ 107
De-Initialize Disk............................................................................................. 107
Lock/Unlock Disk............................................................................................. 107
Enclosure Status............................................................................................. 107
Configure Logical Drives................................................................................. 110
Keyboard Commands......................................................................................110
Configure Array Drives............................................................................................. 112
Keyboard Commands......................................................................................112
Change Drive Name........................................................................................ 113
Expand Array Drive......................................................................................... 113
Add RAID 1 Component.................................................................................. 114
Replace Array Component.............................................................................. 114
Remove RAID 1 Component........................................................................... 114
Remove Array Drive........................................................................................ 114
Add Hot Fix Drive............................................................................................ 115
In the Event of a Drive Failure.................................................................................. 115
Remove Hot Fix Drive..................................................................................... 116
Hot Fix Pool Access........................................................................................ 116
Parity Verify..................................................................................................... 116
Periodic Parity Verify....................................................................................... 116
Build/Rebuild Progress.................................................................................... 117
Create New Array Drive........................................................................................... 117
Notes on the Configuration of RAID 0, 1, 4, 5 and 10 Arrays Drives................ 119
Configure Host Drives.............................................................................................. 120
Change Drive Name........................................................................................ 120
Swap Host Drives............................................................................................ 120
Remove Host Drives....................................................................................... 121
Split Host Drive ............................................................................................... 121
Merge Host Drives .......................................................................................... 121
Partition Host Drives........................................................................................ 121
Overwrite Master Boot Code........................................................................... 121
8 Storage Console Plus ................................................................................ 123
Introduction....................................................................................................................... 123
Monitoring of the Whole Subsystem......................................................................... 123
Remote Configuration and Maintenance.................................................................. 123
The StorCon+ Controls..................................................................................................... 124
The Toolba r............................................................................................................. 124
The Status Bar......................................................................................................... 125
Window Menu Commands....................................................................................... 125
Help Menu Commands............................................................................................ 125
File Menu Commands.............................................................................................. 126
View Menu Commands............................................................................................ 126
The Chart Menu....................................................................................................... 126
Contents vii
The Configuration Menu Commands....................................................................... 127
Select Controller............................................................................................................... 128
Physical Configuration Window................................................................................ 130
Controller Configuration Settings............................................................................. 132
Change Settings..............................................................................................132
Save Information............................................................................................. 132
Firmware Update..................................................................................................... 133
I/O Processors......................................................................................................... 134
Channel Settings............................................................................................. 136
Rescan ID(s)................................................................................................... 136
Hot Plug: Add Disk......................................................................................... 136
Direct Access Devices............................................................................................. 137
The SCSI Parameter/Initialize......................................................................... 139
Synchronous Transfer..................................................................................... 139
Disconnect...................................................................................................... 140
Tagged Queues.............................................................................................. 140
SCSI Read Cache / SCSI Write Cache........................................................... 140
De-Initialize a Physical Disk............................................................................ 140
Lock / Unlock a Removable Disk ..................................................................... 140
Non Direct Access Devices (Raw Devices).............................................................. 141
Logical Configuration Window.......................................................................................... 142
Host Drives.............................................................................................................. 142
Normal Host Drive........................................................................................... 142
Array Drives............................................................................................................. 142
Logical Drives.......................................................................................................... 144
Physical Drives........................................................................................................ 144
The Host Drive Information Window......................................................................... 145
The Array Drive Information Window ....................................................................... 146
The Logical Drive Information Window..................................................................... 148
Change the Name of a Drive.................................................................................... 149
Remove a Host Drive............................................................................................... 149
Create a New Host Drive......................................................................................... 150
Parity Verify............................................................................................................. 151
Parity Recalculate.................................................................................................... 152
Progress Information............................................................................................... 152
Expansion of an Array.............................................................................................. 153
Add a Hot Fix Drive.................................................................................................. 155
Remove a Hot Fix Drive........................................................................................... 156
Hot Fix Pool Access................................................................................................. 156
Add a RAID 1 Component (Mirror a Drive)............................................................... 156
Remove a RAID 1 Component (Remove a Mirror Drive).......................................... 157
Replace a Logical Drive........................................................................................... 158
The Different States of an Array Drive..................................................................... 158
The Ready State............................................................................................. 158
The Idle State.................................................................................................. 159
The Build / Rebuild State................................................................................. 159
The Fail State.................................................................................................. 160
The Error State................................................................................................ 160
The Statistics Window...................................................................................................... 161
viii Intel RAID Controller SRCU32 User’s Guide
The Controller Events Window......................................................................................... 162
StorCon+ Help.................................................................................................................. 163
Intel RAID Controller SRCU32 Service and Intel RAID Controller SRCU32 Mail............... 165
9 Getting Help ................................................................................................ 171
World Wide Web............................................................................................................... 171
Telephone........................................................................................................................ 171
In U.S. and Canada:................................................................................................ 171
In Europe:................................................................................................................ 171
In Asia-Pacific Region:............................................................................................. 172
In Japan:.................................................................................................................. 172
In Latin America:...................................................................................................... 172
10 Regulatory and Certification Information................................................. 173
Product Regulatory Compliance....................................................................................... 173
Product Safety Compliance ..................................................................................... 173
Product EMC Compliance........................................................................................ 173
Product Regulatory Compliance Markings............................................................... 174
Electromagnetic Compatibility Notices.............................................................................. 175
FCC Verification Statement (USA)........................................................................... 175
ICES-003 (Canada)................................................................................................. 176
CE Declaration of Conformity (Europe).................................................................... 176
BSMI (Taiwan)......................................................................................................... 176
Warnings and Cautions.................................................................................................... 176
Warnings................................................................................................................. 176
Cautions.................................................................................................................. 176
11 Appendix ..................................................................................................... 177
BIOS Informa ti o n.............................................................................................................. 177
Background I/O’s..................................................................................................... 177
BIOS Boot Messages...............................................................................................177
FLASH Memory Programming.......................................................................................... 179
Firmware Update Procedure via XROM StorCon..................................................... 179
Firmware Recovery .......................................................................................................... 180
PCI Hot Plug Overview..................................................................................................... 181
Hot Insertion............................................................................................................ 181
Hot Removal............................................................................................................ 181
Contents ix
Figures
Figure 1. RAID 0 – Data Striping ....................................................................................... 13
Figure 2. RAID 1 – Disk Mirroring...................................................................................... 14
Figure 3. RAID 1 – Disk Duplexing.................................................................................... 14
Figure 4. RAID 4................................................................................................................ 15
Figure 5. RAID 5................................................................................................................ 16
Figure 6. RAID 10..............................................................................................................16
Figure 7. Installing the SDRAM.......................................................................................... 23
Figure 8. External LED Connectors................................................................................... 32
Figure 9. Operational State Diagram for RAID 4/5............................................................. 35
Figure 10. Controller Settings............................................................................................ 49
Figure 11. Component Selection (Windows NT)................................................................ 80
Figure 12. Component Selection (Windows 2000)............................................................. 80
Figure 13. Add/Remove Programs (Windows 2000 Example)........................................... 81
Figure 14. Select Interface................................................................................................. 84
Figure 15. Remote Machine...............................................................................................85
Figure 16. Select Controller............................................................................................... 85
Figure 17. Monitor and Express Setup / Advanced Setup Menu........................................ 86
Figure 18. View Statistics Menu......................................................................................... 87
Figure 19. Physical Drive Statistics.................................................................................... 88
Figure 20. Logfile Name .................................................................................................... 88
Figure 21. Controller Events.............................................................................................. 89
Figure 22. Hard Drive Information...................................................................................... 89
Figure 23. Hard Drive Last Status...................................................................................... 90
Figure 24. Save Information .............................................................................................. 91
Figure 25. Screen Service Messages and Async. Events.................................................. 92
Figure 26. Select Host Drive.............................................................................................. 93
Figure 27. Choose Type.................................................................................................... 95
Figure 28. Create Host Drive Confirmation........................................................................ 95
Figure 29. Hard Drive Capacity..........................................................................................95
Figure 30. Drive Status...................................................................................................... 96
Figure 31. Host Drive Options............................................................................................96
Figure 32. Array Drive Summary....................................................................................... 98
Figure 33. Failed Hard Drive .............................................................................................. 98
Figure 34. Select Drive to Repair....................................................................................... 98
Figure 35. Replace Hard Drive Prompt.............................................................................. 99
Figure 36. Add Disk to Array Confirmation......................................................................... 99
Figure 37. Array Drive Summary....................................................................................... 99
Figure 38. Array Drive Error State Dialog........................................................................... 99
Figure 39. Controller Settings Dialog............................................................................... 100
Figure 40. Select Enclosure............................................................................................. 102
Figure 41. Enclosure Slots............................................................................................... 103
Figure 42. Advanced Settings Dialog............................................................................... 103
Figure 43. Select Physical Drive...................................................................................... 104
Figure 44. Initialize Disk................................................................................................... 105
Figure 45. Disk Initialization Confirmation........................................................................ 106
Figure 46. View Status/Defects........................................................................................107
Figure 47. Enclosure Status.............................................................................................108
Figure 48. Enclosure Slots............................................................................................... 108
x Intel RAID Controller SRCU32 User’s Guide
Figure 49. Block Diagram of a SAF-TE Subsystem ......................................................... 109
Figure 50. Select Logical Drive........................................................................................ 110
Figure 51. Select Physical Drive...................................................................................... 110
Figure 52. Create Single Drive......................................................................................... 111
Figure 53. Drive Size....................................................................................................... 111
Figure 54. Select Array Drive ........................................................................................... 112
Figure 55. Array Drive Menu............................................................................................ 112
Figure 56. Expand Array Dialog....................................................................................... 113
Figure 57. Remove Drive Confirmation............................................................................ 114
Figure 58. Progress Information...................................................................................... 116
Figure 59. Create New Array Drive.................................................................................. 117
Figure 60. Choose Type.................................................................................................. 118
Figure 61. Strip Size........................................................................................................ 118
Figure 62. Choose Build Type......................................................................................... 118
Figure 63. Create Array Drive Confirmation..................................................................... 118
Figure 64. Drive Size Dialog............................................................................................ 119
Figure 65. Array Drive Status...........................................................................................119
Figure 66. Host Drive Configuration................................................................................. 120
Figure 67. StorCon+ Plus Toolbar ................................................................................... 124
Figure 68. Status Bar....................................................................................................... 125
Figure 69. Window Menu................................................................................................. 125
Figure 70. Help Menu...................................................................................................... 125
Figure 71. File Menu........................................................................................................ 126
Figure 72. View Menu...................................................................................................... 126
Figure 73. Chart Menu..................................................................................................... 126
Figure 74. Physical Configuration Menu.......................................................................... 127
Figure 75. Logical Configuration Menu............................................................................ 127
Figure 76. Refresh Rate Settings Dialog.......................................................................... 127
Figure 77. Logical Configuration Menu............................................................................ 128
Figure 78. Select Controller............................................................................................. 129
Figure 79. Sockets........................................................................................................... 129
Figure 80. Physical Configuration Icon............................................................................ 130
Figure 81. Example of a Physical Configuration and the Controller Settings.................... 130
Figure 82. Controller Icon................................................................................................ 131
Figure 83. Controller Settings Dialogs............................................................................. 131
Figure 84. Processor Information..................................................................................... 135
Figure 85. Physical Drive Information.............................................................................. 138
Figure 86. Logical Configuration...................................................................................... 142
Figure 87. Host Drive Information Window....................................................................... 145
Figure 88. Array Drive Information Window..................................................................... 146
Figure 89. Logical Drive Information Window................................................................... 148
Figure 90. Create a New Host Drive................................................................................ 150
Figure 91. Array Build Information Dialog ........................................................................ 151
Figure 92. Parity Verify.................................................................................................... 151
Figure 93. Parity Verify Progress Information .................................................................. 152
Figure 94. Logical Configuration...................................................................................... 154
Figure 95. Add Hot Fix Drive............................................................................................ 155
Figure 96. Add RAID 1 Component ................................................................................. 157
Figure 97. The Ready State............................................................................................. 158
Contents xi
Figure 98. The Idle State................................................................................................. 159
Figure 99. The Build / Rebuild State................................................................................ 159
Figure 100. The Fail State............................................................................................... 160
Figure 101. The Error State............................................................................................. 160
Figure 102. Statistics Window Icon.................................................................................. 161
Figure 103. Statistics Window..........................................................................................161
Figure 104. Controller Events Window Icon..................................................................... 162
Figure 105. Controller Events.......................................................................................... 163
Figure 106. StorCon+ Help.............................................................................................. 164
Figure 107. Services........................................................................................................ 165
Figure 108. RAID Configuration Services........................................................................ 166
Figure 109. RAID Configuration Service Add/Remove Users........................................... 167
Figure 110. RAIDMail...................................................................................................... 168
Figure 111. Log File Name.............................................................................................. 168
Figure 112. Workstation Names...................................................................................... 169
Figure 113. RAID Mail Utility............................................................................................ 169
Figure 114. BIOS Boot Message..................................................................................... 177
Tables
Table 1. Hard Drive SCSI Parameters............................................................................... 25
Table 2. RAID Level, Array Type, and Hard Drive Requirements....................................... 26
Table 3. RAID Level, Hard Drives, and Usable Storage Capacity...................................... 27
Table 4. Hardware Architecture......................................................................................... 27
Table 5. Environmental Specifications............................................................................... 28
Table 6. SCSI Drive Standards.......................................................................................... 29
Table 7. Function Check.................................................................................................... 31
Table 8. Disk, Volume, and Array Limitations .................................................................... 33
Table 9. Operational States for RAID 4/5........................................................................... 34
Table 10. Additional Operational States.............................................................................36
Table 11. Hard Drive Replacement Options.......................................................................36
Table 12. Linux Path Names..............................................................................................55
Table 13. UnixWare Bus Number, Target ID, and LUN...................................................... 74
Table 14. Host Drive Types............................................................................................... 84
Table 15. Controller Settings........................................................................................... 100
Table 16. Advanced Settings........................................................................................... 103
Table 17. View Status/Defects......................................................................................... 107
Table 18. Tool b a r Icons................................................................................................... 124
Table 19. Configuration Menu Refresh Settings............................................................... 128
Table 20. Controller Settings........................................................................................... 132
Table 21. I/O Processor Icons......................................................................................... 134
Table 22. Direct Access Device Icons.............................................................................. 137
Table 23. Data Transfer Rate s.........................................................................................139
Table 24. Non Direct Access Devices.............................................................................. 141
Table 25. Host Drive Icons .............................................................................................. 142
Table 26. Array Drive Icons............................................................................................. 143
Table 27. Logical Drive Icons...........................................................................................144
Table 28. Physical Drive Icon.......................................................................................... 144
Table 29. Event Window Icons........................................................................................ 162
xii Intel RAID Controller SRCU32 User’s Guide
1 Introduction and General Information
Intended Audience
To use this product you should have experience in configuring computer equipment. You should
be able to install and configure the operating system (OS) to recognize peripherals and you should
be able to use software utilities to configure and troubleshoot those installed components. Be sure
that you are familiar with the installation and setup of the OS that you are installing. For detailed
OS installation procedures, consult the documentation that came with the OS.
Read and adhere to all warnings, cautions, and notices in this guide and the other documents in the
user documentation set supplied with this product. Read and adhere to the computer system safety
installation instructions.
RAID Levels
RAID 0 - Data Striping
Data blocks are split into stripes based on the adjusted stripe size (for example, 128 KB) and the
number of hard drives. Each stripe is stored on a separate hard drive. Significant improvement of
the data throughput is achieved using this RAID level, especially with sequential read and write.
RAID 0 (Figure 1) includes no redundancy. When one hard drive fails, all data is lost. RAID 0
requires a minimum of two disks.
Figure 1. RAID 0 – Data Striping
13
RAID 1 - Disk Mirroring/Dis k Duplexing
All data is stored twice on two identical hard drives. When one hard drive fails, all data is
immediately available on the other without any impact on performance and data integrity.
With Disk Mirroring (Figure 2) two hard drives are mirrored on one I/O channel. If each hard drive
is connected to a separate I/O channel, it is called Disk Duplexing (Figure 3).
RAID 1 represents an easy and highly efficient solution for data security and system availability. It
is especially suitable for installations that are not too large (the available capacity is only half of the
installed capacity). RAID 1 requires a minimum of two disks.
Figure 2. RAID 1 – Disk Mirroring
Figure 3. RAID 1 – Disk Duplexing
14 Intel RAID Controller SRCU32 User’s Gu ide
RAID 4 - Data Striping with a Dedicated Parity Drive
RAID 4 (Figure 4) works in the same way as RAID 0. The data is striped across the hard drives
and the controller calculates redundancy data (parity information) that is stored on a separate hard
drive (P1, P2). Should one hard drive fail, all data remains fully available. Missing data is
recalculated from existing data and parity information.
Unlike in RAID 1 only the capacity of one hard drive is needed for redundancy. For example, in a
RAID 4 disk array with five hard drives, 80% of the installed hard drive capacity is available as
user capacity, only 20% is used for redundancy. In systems with many small data blocks, the parity
hard drive becomes a throughput bottleneck. With large data blocks, RAID 4 shows significantly
improved performance. RAID 4 requires a minimum of three disks.
Figure 4. RAID 4
RAID 5 - Data Striping with Striped Parity
Unlike RAID 4, the parity data in a RAID 5 disk array are striped across all hard drives (Figure 5).
The RAID 5 disk array delivers a balanced throughput. Even with small data blocks, which are
very likely in a multi-tasking and multi-user environment, the response time is very good. RAID 5
offers the same level of security as RAID 4. When one hard drive fails, all data is still fully
available. Missing data is recalculated from the existing data and parity information. RAID 4 and
RAID 5 are particularly suitable for systems with medium to large capacity requirements, due to
their efficient ratio of installed and available capacity. RAID 5 requires a minimum of three disks.
Introduction and General Information 15
Figure 5. RAID 5
RAID 10 - Combination of RAID 1 and RAID 0
RAID 10 is a combination of RAID 0 (Performance) and RAID 1 (Data Security). Unlike RAID 4
and RAID 5, there is no need to calculate parity information. RAID 10 disk arrays offer good
performance and data security (Figure 6). As in RAID 0, optimum performance is achieved in
highly sequential load situations. Identical to RAID 1, 50% of the installed capacity is lost through
redundancy. RAID 10 requires a minimum of four disks.
16 Intel RAID Controller SRCU32 User’s Gu ide
Figure 6. RAID 10
Chaining
The Intel RAID Controller SRCU32 firmware supports Drive Chaining (also referred to as Disk
Spanning). Drive Chaining is the process of linking several individual drives to form a large single
drive. Chaining is only available after having selected two or more drives in the Storage Console
(StorCon) or Storage Console Plus (StorCon+). Chaining is an inexpensive method to obtain a
large logical unit from many smaller hard drives.
WARNING
Disk Chaining does not offer any form of data protection and can result in loss of data. It is
therefore recommended not to use logical drives of the type chain as components of array drives.
Configuring a Chaining Set Using StorCon
1. Select “Create New Host Drive.”
2. Select two or more drives.
3. Select “Chaining.”
Configuring a Chaining Set Using StorCon+
1. Click the “New host drive” icon.
2. Select “Configuration,” “Host Drive,” and “Create New.” A new host drive window appears.
3. Select a drive(s) using <Shift> and arrow keys. Chaining is grayed out before selecting two
drives and is available after selecting two drives.
4. Select “Chaining” and press <Enter>.
The System will configure the chain set that is now a logical drive.
Introduction and General Information 17
Levels of Drive Hierarchy Within the Intel® RAID
Controller SRCU32 Firmware
The Intel® RAID Controller SRCU32 firmware is based on four fundamental levels of hierarchy.
Each level has its own drives (components). The basic rule is to build up a drive on a given level of
hierarchy. The drives of the next lower level of hierarchy are used as components.
Level 1
Physical drives are hard drives and removable hard drives. Some Magneto Optical (MO) drives are
located on the lowest level. Physical drives are the basic components of all “drive constructions.”
However, before they can be used by the firmware, these hard drives must be “prepared” through a
procedure called initialization. During this initialization each hard drive receives information,
which allows an univocal identification even if the SCSI ID or the controller is changed. For
reasons of data coherency, this information is extremely important for any drive construction
consisting of more than one physical drive.
Level 2
On the next higher level are the logical drives. Logical drives are introduced to obtain full
independence of the physical coordinates of a physical device. This is necessary to easily change
the Intel RAID Controller SRCU32 and the channels, IDs, without loosing the data and the
information on a specific disk array.
Level 3
On this level of hierarchy, the firmware forms the array drives. Depending on the firmware
installed an array drive can be:
• Single Disks: one disk or a JBOD (just a bunch of drives)
• Chaining sets (concatenation of several hard drives)
• RAID 0 array drives
• RAID 1 array drives, RAID 1 array drives plus a hot fix drive
• RAID 4 array drives, RAID 4 array drives plus a hot fix drive
• RAID 5 array drives, RAID 5 array drives plus a hot fix drive
• RAID 10 array drives, RAID 10 array drives plus a hot fix drive
18 Intel RAID Controller SRCU32 User’s Gu ide
Level 4
On level 4, the firmware forms the host drives. Only these drives can be accessed by the host
operating system of the computer. The firmware automatically transforms each newly installed
logical drive and array drive into a host drive. This host drive is then assigned a host drive number
which is identical to its logical drive or array drive number.
The firmware is capable of running several kinds of host drives at the same time. For example, in
Windows
is a single hard drive. On this level the user may split an existing array drive into several host
drives.
After a capacity expansion of a given array drive the added capacity appears as a new host drive on
this level. It can be either used as a separate host drive, or merged with the first host drive of the
array drive. Within StorCon, each level of hierarchy has its own menu:
Level 1 - Configure Physical Devices
Level 2 - Configure Logical Drives
Level 3 - Configure Array Drives
†
2000, drive C is a RAID 5 type host drive (consisting of five SCSI hard drives), drive D
Level 4 - Configure Host Drives
Generally, each installation procedure passes through these four menus, starting with level 1.
Installation includes the initializing the physical drives, configuring the logical drives, configuring
the array drives (for example, RAID 0, 1, 4, 5, and 10) and configuring the host drives.
Transparency of Host Drives
The structure of the host drives installed with StorCon (see Chapter 7, Storage Console) is not
known to the operating system. For example, the operating system does not recognize that a given
host drive consists of a number of hard drives forming a disk array.
To the operating system this host drive simply appears as one single hard drive with the capacity of
the disk array. This complete transparency represents the easiest way to operate disk arrays under
the operating system. Neither operating system nor the PCI computer need to be involved in the
administration of these complex disk array configurations.
Introduction and General Information 19
Using CD-ROMs, DATs, Tapes, etc.
A SCSI device that is not a SCSI hard drive or a removable hard drive, or that does not behave like
one, is called a Non-Direct Access Device. Such a device is not configured with StorCon and does
not become a logical drive or host drive. SCSI devices of this kind are either operated through the
Advanced SCSI programming Interface (ASPI) (MS-DOS
or are directly accessed from the operating system (UNIX
NOTE
✏
Hard disks and removable hard disks are called Direct Access Devices. However, there are some
Non-Direct Access Devices, for example, certain MO drive that can be operated just like removable
hard disks if they have been appropriately configured (for example, by changing their jumper
settings).
†
, Windows, Novell NetWare† or OS/2†),
†
, Windows NT†).
20 Intel RAID Controller SRCU32 User’s Gu ide
2 Getting Started
What is the Intel RAID Controller SRCU32 Firmware?
We refer to firmware as the operating system that controls the Intel RAID Controller SRCU32 with
all of its functions and capabilities. The firmware exclusively runs on the Intel RAID Controller
SRCU32 and is stored in the Flash-RAM on the Intel RAID Controller SRCU32 PCB. The
controlling function is entirely independent of the PCI computer and the host operating system, and
does not drain computing power or time from the PCI computer. According to the system
requirements needed, the Intel RAID Controller SRCU32 is available with two firmware variants.
The firmware is either already installed on the controller upon delivery, or can be added as an
upgrade.
Unlike pure software solutions, for example, for Windows NT, the Intel RAID Controller SRCU32
is a pure hardware RAID solution. All Intel RAID Controllers are equipped with hardware that is
well suited for disk arrays. The Intel RAID Controller SRCU32 firmware uses this hardware with
efficiency and therefore allows you to configure disk arrays that do not load the host computer
(whereas all software-based RAID solutions more or less reduce the overall performance of the host
computer).
The basic concept of the Intel RAID Controller SRCU32 firmware is strictly modular, and
consequently, in its functioning it appears to the user as a unit construction system.
Standard Firmware
In addition to simple controlling functions regarding SCSI hard drives or removable hard drives,
this version of firmware supports disk chaining and array drive configuration (data striping
(RAID 0) and disk mirroring or duplexing (RAID 1)).
WARNING
Disk Chaining does not offer any form of data protection and can result in loss of data. It is
therefore recommended not to use logical drives of the type chain as components of array drives.
21
RAID Hardware Installation and Setup
NOTE
✏
The Intel RAID Controller SRCU32 will work in a 32-bit, 33 or 64 MHz PCI slot; however, a 64-bit
66 MHz slot is recommended for maximum performance.
Minimum Hardware Requirements
• Computer with CD-ROM drive (not attached to the Intel RAID Controller SRCU32).
Computer must be on the supported hardware list. For a supported list refer to:
http://support.intel.com/support/motherboards/server/
• One available PCI slot. See Note above.
• PCI 2.2 compliant System BIOS.
• SCSI hard drive(s) (the minimum required to meet the desired RAID level).
Installing and Removing the SDRAM
Installing the SDRAM
1. With clips A1 and A2 (see Figure 7) in the open position (position 2), insert the DIMM into the
DIMM connector (the DIMM and connector are keyed to ensure proper insertion).
CAUTION
Align the DIMM carefully to prevent damaging the conductor pads on the DIMM orthe
connector. Apply firm pressure but do not force.
2. With the thumbs positioned on each end of the DIMM and two fingers on the DIMM
connector, press the thumb and fingers firmly together until the DIMM clips snap into the close
position (position 1).
22 Intel RAID Controller SRCU32 User’s Gu ide
Removing the SDRAM
1. With the thumbs on the DIMM clips, swing the clips from the close position to the open
position.
2. Grasp the corners of the DIMM with both hands and firmly pull from the DIMM connector.
Figure 7. Installing the SDRAM
Install the Intel RAID Controller SRCU32 in the Intel®
Server Board
The RAID firmware has already been programmed into the memory. Prior to installing the Intel
RAID Controller SRCU32 into the computer, an approved memory module must be installed in the
controller. For a list of approved memory modules refer to:
http://support.intel.com/support/motherboards/server/
CAUTION
Contact the RAID vendor for a list of approved memory modules.
Getting Started 23
WARNING
SHOCK HAZARDS may be present inside the unit in which this card is being installed.
Disconnect all power cords to the unit before removal of any covers. Follow the warnings noted
in the computer’s user or service manual before installing this board. ONLY after all the covers
are reinstalled should you reattach the power cords and power up the unit for the software
installation and use.
NOTE
✏
Take precautions to prevent electrostatic discharge (ESD) damage before handling the Intel RAID
Controller SRCU32.
Install the Intel RAID Controller SRCU32 into an available PCI slot. Refer to the board
documentation for details.
1. Shut down and power-off the computer system.
2. Disconnect power cord(s) and remove the system cover.
3. Insert the Intel RAID controller into an available PCI slot.
4. Connect one end of the SCSI cable to the internal (68 pin) or external (VHDCI) SCSI
connector located on the SRCU32 Controller. Connect the other end of the SCSI cable to the
SCSI drives or drive enclosure.
5. Replace the system cover; reconnect power cord(s).
Programming the FLASH Memory
The Intel RAID Controller SRCU32 normally comes ready to be immediately installed into the
computer server board. However, you may need to reprogram the RAID Firmware that’s located in
the flash memory of the Intel RAID Controller SRCU32. Refer to section 11 Appendix Firmware
Update for a normal reprogram of the firmware.
SCSI Termination
Termination
Termination is a commonly overlooked requirement when connecting SCSI devices together.
When these devices are connected together, the resulting set of devices is typically referred to as a
SCSI bus. SCSI devices such as hard drives and tape drives must be terminated if they are the last
physical devices at either end of the SCSI bus (if nothing else is actively terminating the end of the
bus such as a terminator or backplane). If a device is inserted into the middle of the SCSI bus, then
it (the device itself) should not be terminated. Only terminate each end of the bus.
24 Intel RAID Controller SRCU32 User’s Gu ide
Setting the Termination Mode of the Intel RAID Controller SRCU32
The onboard termination of the RAID controller can be changed within Storage Console. The
default setting is "Auto" (jumpers in ‘Soft-Switch mode). In this mode, the controller automatically
activates/ deactivates termination based on cable connection (if internal and external connectors are
used of a specific channel then the termination is off, otherwise on). "On", "Off" turns the
termination on or off regardless of the connected cables. In addition to the "soft-switch" jumper
setting, termination jumpers force termination always ON or OFF - no matter of the software
settings or cables detected.
Configurable SCSI Parameters
When a SCSI hard drive is initialized the first time by the RAID controller, its SCSI parameters are
automatically set to their optimal settings. Manual configuration is not required. However, the
RAID controller allows for the custom configuration of several SCSI parameters on a hard
drive-by-hard drive basis. There are several settings that can be configured by using the Storage
Console menu Advanced Setup!Configure Physical Devices!Select Physical Drive !SCSI
Parameter/Initialize. Most settings are set automatically and cannot be configured manually. See
the following table.
Table 1. Hard Drive SCSI Parameters
Parameter Setting/Value Description
Synch. Transfer Not
Configurable
Synch. Transfer
Rate
Disconnect Not
Not
Configurable
Configurable
This setting, when enabled, allows the controller to operate in
synchronous transfer mode.
Allows for the setting of the speed for the SCSI hard drives (160 MB/sec
for U160 drives). No matter the setting, the SCSI bus will negotiate the
fastest speed up to this setting. Lowering the setting will force the hard
drive to transfer at the lower speed.
Enabling this setting allows for the hard drive to disconnect from the
SCSI bus when it’s not participating in a transfer. This allows for
optimal bus utilization by all devices on the bus.
(continued)
Getting Started 25
Table 1. Hard Drive SCSI Parameters (continued)
Parameter Setting/Value Description
Tagged Queues Not
Configurable
Disk Read and
Write Cache
Domain
Validation
On / Off For performance reasons, the Read Ahead and Write cache of the hard
Not
Configurable
When enabled, this feature allows the SCSI hard drive to execute more
than one command at a time.
drives should always be on.
Using the <F4> key while in this menu accesses this parameter. When
Domain Validation is set to On, Domain validation allows for a cyclical
check of the correct data transfer at a given rate.
Choosing a Configuration
How Many Hard Drives Should Be Integrated Into the Disk Array?
The number of physical drives the Intel RAID Controller SRCU32 can run determines the
maximum number of physical drives in a disk array. The minimum number of hard drives required
for any array depends of the RAID level you wish to realize. The desired usable disk space of the
disk array as well as the issues discussed in the following sections (What Level of Redundancy is
Needed and Are Hot Fix Drives Needed) have a direct impact on the number of physical hard
drives needed for an array.
Table 2. RAID Level, Array Type, and Hard Drive Requirements
RAID Level
RAID 0 Data Striping 2
RAID 1 Disk Mirroring 2
RAID 4 Data Striping with Parity Drive 3
RAID 5 Data Striping with Striped Parity 3
RAID 10 Data Striping and Mirroring 4
Disk Array Type
Minimum Number of
Hard Drives Required
What Level of Redundancy is Needed?
RAID 0 (data striping) provides no redundancy but has high data throughput. With RAID 1
(disk mirroring) the data is 100% redundant because it is mirrored on other SCSI hard drives.
RAID 1 provides the highest level of redundancy, but is also the most expensive solution. A
combination of RAID levels 0 and 1 is RAID 10. Two RAID 0 stripe sets are mirrored. If one
drive fails, the data is available on the mirrored drive.
With RAID 4 (data striping with a dedicated parity drive) and RAID 5 (data striping with parity
striped across all RAID disks), parity information is calculated from the data with a simple
mathematical operation (eXclusive OR, XOR), and stored either on one dedicated drive (RAID 4)
or to all drives (RAID 5). Should one drive fail, the data of the defective drive can be reconstructed
using the remaining user data and the previously calculated parity data. RAID levels 4, 5 and 10
can tolerate the failure of one drive just as RAID 1, however RAID 4, RAID 5, or RAID 10 are less
expensive because of their efficient ratio of available to installed capacity.
26 Intel RAID Controller SRCU32 User’s Gu ide
Table 3. RAID Level, Hard Drives, and Usable Storage Capacity
RAID Level
RAID 0 2 GB 3 GB 4 GB 5 GB
RAID 1 1 GB 1 GB 1 GB 1 GB
RAID 4 NA 2 GB 3 GB 4 GB
RAID 5 NA 2 GB 3 GB 4 GB
RAID 10 NA NA 2 GB NA
* Each hard drive is assumed to have 1 GB capacity.
Available
Capacity with
2 Hard Drives*
Available
Capacity with
3 Hard Drives*
Available
Capacity with
4 Hard Drives*
Available
Capacity with
5 Hard Drives*
Are Hot Fix Drives Needed?
Assume that one of the hard drives of the RAID 5 disk array fails (Hot Fix drives are available with
RAID 1, 4, 5, and 10 arrays). The disk array is without redundancy. Time Without Redundancy
(TWR) starts to run. Any unnecessary prolongation of the TWR (the time required to get a
replacement drive, or because you did not immediately recognize the failure) increases the risk of
data loss that will occur should a second drive fail. Therefore, redundancy should be restored as
soon as possible and in an automated manner. Integrating a Hot Fix drive (also referred to as hot
spare) as an immediately available and auto-replacing drive is the most effective way to keep the
TWR as short as possible. Only a Hot Fix drive can ensure optimal disk array security and constant
data availability.
Using a Hot Fix drive is not compulsory. If you control the disk array at regular intervals and
immediately replace a defective drive (by shutting down the system or hot-plugging), you can
operate the system without a Hot Fix drive.
Intel RAID Controller Hardware Features
This section provides a summary of the key features, configuration options and support interface
technology supported by the IIR controller.
Architecture Features (HW)
Table 4. Hardware Architecture
Component Feature
I/O Microprocessor The 80303 uses the 100MHz Intel 80960JT-100 core with a
100MHz/64-bit internal bus
800MB/sec,
Cache Memory The SRCU32 supports up to 256MB of 64-bit ECC SDRAM
operating at 100MHz. Memory is expandable to 64, 128, or 256MB.
Flash Memory 3.3v, 16Mb (2MB) flash memory chip is used to store the RAID
firmware
I/O interface (PCI) PCI 2.2 compliant, universally keyed for 3.3 and 5 volt PCI slots
PCI Transfer Rate 528MB/sec (Burst)
PCI Signaling 5 or 3.3 volt
SCSI Controller: LSI SYM53C1010 Dual channel Ultra160
to and from the internal IOP peripherals.
with an internal throughput of up to
Getting Started 27
Environmental Characteristics
Table 5. Environmental Specifications
Attribute Condition
Thermal: Non-Operating -10
Humidity: Non-Operating 20% to 75% Relative Humidity, non-condensing
Operating Temperature & Voltage
Margin
Form Factor (physical dimensions) Height: 98 mm (3.86 inches)
Weight .35 kg (.77 lb)
o
C (Celsius) to 60o C
o
0
C to 55o C +/- 5% Vcc
Length: 200 mm (7.87 inches)
Hard Drive Connectivity (SCSI Specifics)
The RAID adapter supports up to 15 SCSI devices per SCSI channel. It supports up to 15 hard disk
drives (or 14 hard disks drives if one of the SCSI ID’s is occupied by a SAF-TE processor) per
channel of the SCSI controller (30 disk drives total for the dual channel SRCU32 controller).
Supported Hard Drive Technology
The IIR controller supports both Single-ended (SE) and Low Voltage Differential (LVD) devices
but it is recommended that you use only one type of drive technology (SE or LVD) on any one
channel at a time.
The IIR controller supports single-ended drives which operate at up to 40MB/sec depending upon
the speed of the drives attached.
The IIR controller supports Ultra-2 LVD SCSI devices operating at up to 80MB/sec and Ultra160
LVD SCSI devices operating at up to 160MB/sec.
NOTE
✏
If both SE and LVD devices are attached to the same channel/bus, the entire bus will operate at the
single-ended speed of the slowest device. See Table 6 for the maximum cable length distances that
apply to each mode.
The IIR controller is designed to use Ultra160 SCSI hard drives and is backward compatible with
older SCSI hard drive specifications. See Table 6 for the SCSI standards supported.
28 Intel RAID Controller SRCU32 User’s Gu ide
Table 6. SCSI Drive Standards
SCSI Drive
Standard
Single-Ended LVD
SCSI-1 (2)
Fast SCSI (2)
Fast Wide SCSI
Ultra SCSI (2)
Ultra SCSI (2)
Wide Ultra SCSI
Wide Ultra SCSI
Wide Ultra SCSI
Ultra2 SCSI (2, 4)
Wide Ultra2 (4)
Ultra160 (Ultra3)
Notes:
1. May be exceeded in Point-to-Point and engineered specific applications.
2. Use of the word "Narrow", preceding SCSI, Ultra SCSI, or Ultra2 SCSI (for example, Narrow SCSI) is optional.
3. LVD was not defined in the original SCSI standards for this speed. If all devices on the bus support LVD, then
12-meters operation is possible at this speed. However, if any device on the bus is singled-ended only, then the
entire bus switches to single-ended mode and the distances in the single-ended column apply.
4. Single-ended is not defined for speeds beyond Ultra.
After Ultra2 all new speeds are wide only.
Speed
(MB/Sec)
5 8 6
10 8 3
20 16 3
20 8 1.5
20 8 3 N/A 4
40 16 N/A
40 16 1.5 N/A 8
40 16 3 N/A 4
40 8
80 16
160 16
Bus Width
(Bits)
Maximum Cable Length (meters) (1) Adapter Maximum
(3)
(3)
(3)
(3)
(3)
(4)
(4)
(4)
12 8
12 16
12 16
Devices per SCSI Channel
8
8
16
8
16
Support for Non-Hard-Disk-Drive SCSI Devices (Non-DirectAccess Devices)
The RAID controller will pass through to the host operating system direct access to nondirectaccess SCSI devices that are connected to a SCSI bus (channel) of the RAID controller. The RAID
controller passes through all control of these devices to the host operating system.
Types of supported non-Direct-Access SCSI devices (this does not cover specific vendors and
models):
• SAF-TE Processors
• Tape Devices
• CD-ROMs
Getting Started 29
Array Roaming Compatibility
Array Roaming allows the user the ability to move a complete RAID array from one computer system
to another computer system and preserve the RAID configuration information and user data on that
RAID array. Compatible RAID controllers must control the RAID subsystems of the two computer
systems (see list of compatible controllers in this section). The transferred RAID array may be brought
online while the target server continues to run if the hard disk drives and disk enclosure support hotplug capabilities. The hard disk drives are not required to have the same SCSI ID in the target system
that they did in the original system that they are removed from. The RAID array drive that is being
roamed must not be of type Private. This includes all non-private host, array, and logical drives.
WARNING
The SRCU32 adapter, with firmware 2.33.xx, is not compatible with some previous versions of IIR
RAID FW running on IIR controllers. Only the versions listed below are compatible. Do not
attempt RAID Array Drive Roaming between RAID controllers that are not compatible with the
SRCU32 adapter. Unpredictable behavior may include, but is not limited to, data loss or
corruption.
Compatible adapters inc lud e:
• SRCU31 - Firmware version 6.2.32.xx (the 6 will not show on boot)
• SRCU31L - Firmware version 6.2.32.xx (the 6 will not show on boot)
• SRCU32 - Firmware version 2.33.xx
• SRCMR - Firmware version 2.32.xx
NOTE
✏
Compatibility refers only to how data and RAID configuration information are written to the hard
disks. Compatible adapters have the same data file format.
Number of Supported Devices
The Intel RAID Controller SRCU32 supports up to 15 different SCSI devices (single hard drives,
drive enclosures, controllers, CD-ROM’s, tapes, etc). In certain configurations, this number is
reduced.
Example: Up to 14 SCSI devices if a SAF-TE processor occupies one of the SCSI ID’s.
SCSI Connectors
The Intel RAID Controller SRCU32 includes two internal SCSI-3 Ultra Wide 68-pin connectors
and two external VHDCI (Very High Density Connector Interface) 68-pin connectors. Each
connector can be fully populated with up to 15 SCSI devices (not to exceed an additive total of
15 devices per channel when using both he internal and external connector for the channel) as long
as cable length limitations for each segment are not exceeded.
30 Intel RAID Controller SRCU32 User’s Gu ide
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