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Chapter 4: Getting Started ● 28
Choosing a RAID Level
This section provides a brief overview of the RAID levels supported by your ICP RAID
controller, including the minimum and maximum number of disk drives required by each.
● RAID 0 (Non-redundant Array)—Stripes data across multiple disk drives. Improved
performance but no redundancy (see page 71).
●
RAID 1 Array
—
Created from two disk drives where one disk drive is a
mirror
of the other
(the same data is stored on each disk drive). Redundancy, but reduced capacity (see page 72).
●
RAID 1E Array
—
Similar to a RAID 1 array except that data is mirrored
and
striped, and more
disk drives can be included (see page 72).
● RAID 5 Array—Stripes data for improved performance and uses parity data to provide
redundancy (see page 74).
● RAID 5EE Array—Similar to a RAID 5 array, but includes a distributed spare and must
include a minimum of four disk drives (see page 75).
● RAID 10 Array—Built from two or more equal-sized RAID 1 arrays, stripes and mirrors
data across multiple disk drives. Redundancy and improved performance (see page 73).
● RAID 50
*
Array—Built from multiple disk drives configured as two or more RAID 5
arrays, stripes stored data and parity data across all disk drives (see page 76).
● RAID 6 Array—Similar to a RAID 5 array except that it includes two independent sets of
parity data instead of one (see page 77).
● RAID 60
1
Array—Similar to a RAID 50 array except that it includes four independent sets
of parity data instead of two (see page 77).
Use the table on page 78 to see how many disk drives you must connect to your RAID
controller to support the RAID level you want.
*
Because it s four disk drives only, the ICP9047MA RAID controller can’t support RAID 50 or RAID 60.
- SAS, SATA, and SCSI 1
- RAID Controllers 1
- Copyright 2
- Trademarks 2
- Disclaimer 2
- ICP vortex Customer Support 3
- Canadian Compliance Statement 5
- Contents 6
- Using the ICP Flash Utility 10
- Safety Information 10
- Technical Specifications 10
- About This Guide 11
- How to Find More Information 12
- Kit Contents and System 13
- Requirements 13
- Kit Contents 14
- System Requirements 14
- CD drive 15
- About Your RAID Controller 16
- Array-level Features 17
- RAID Controller Battery Model 18
- About the ICP5445AU 19
- About the ICP5085AU 20
- About the ICP9085LI 21
- About the ICP5085BR 22
- About the ICP9047MA 23
- About the ICP9087MA 24
- About the ICP9014RO 25
- About the ICP9024RO 26
- Getting Started 27
- Choosing a RAID Level 28
- Selecting Disk Drives 29
- Selecting Cables 30
- SATA Cables 31
- SCSI Cables 31
- Installation Options 32
- Basic Installation Steps 32
- In this chapter 33
- Before You Begin 34
- Installing the Controller 34
- Devices on page 38 36
- Disk drives on 37
- Controller connected to 37
- Connecting External Devices 38
- Failed Device is faulty On 39
- Other No error Off 39
- Creating a Bootable Array 40
- Setting the Boot Controller 41
- Creating an Array 41
- Making Your Array Bootable 44
- Installing the Driver and an 45
- Operating System 45
- Creating a Driver Disk 46
- Installing with Windows 47
- Installing with Red Hat Linux 47
- Installing with SUSE Linux 48
- Installing with NetWare 48
- Installing with OpenServer 49
- Installing with UnixWare 49
- Installing with FreeBSD 50
- Installing on Windows 53
- Installing on NetWare 53
- Installing on OpenServer 54
- Installing on UnixWare 54
- Installing on Solaris 55
- Installing on FreeBSD 55
- Managing Your Storage Space 56
- About ICP Storage Manager 57
- About the ICP Flash Utility 58
- Which Utility Should I Use? 58
- Solving Problems 59
- Troubleshooting Checklist 60
- Silencing the Alarm 60
- Resetting the Controller 62
- In this appendix 63
- ) Web site at www.scsita.org 63
- What is SAS? 64
- What’s a Phy? 65
- What’s a SAS Port? 66
- What’s a SAS Address? 66
- What’s a SAS Connector? 66
- What do SAS Cables Look Like? 66
- Direct-attach Connections 67
- Backplane Connections 67
- SAS Expander Connections 68
- Understanding RAID 70
- Understanding Drive Segments 71
- Nonredundant Arrays (RAID 0) 71
- RAID 1 Arrays 72
- RAID 1 Enhanced Arrays 72
- RAID 10 Arrays 73
- RAID 5 Arrays 74
- RAID 5EE Arrays 75
- RAID 50 Arrays 76
- RAID 6 Arrays 77
- RAID 60 Arrays 77
- Selecting the Best RAID Level 78
- Creating a New Array 80
- Managing Existing Arrays 81
- Initializing Disk Drives 81
- Rescanning Disk Drives 81
- Secure Erasing Disk Drives 82
- Opening a -Select Utility 82
- Applying Changes and Exiting 82
- General Controller Settings 83
- Option Description 84
- Viewing the Event Log 86
- Running the ACU Using Scripts 89
- About Record Mode 90
- Required 91
- ? Description 91
- HotspareDrives=0:0:0,0:1:0 92
- Type=Volume 92
- Type=RAID1 92
- ACU exits with an error 93
- Keyword Description 94
- ACU Error Codes 95
- Sample Scripts 96
- Running the Menu-based IFU 100
- Running the 101
- Current Requirements 107
- Environmental Specifications 107
- DC Power Requirements 107
- Index ● 109 109
- Index ● 110 110
- Index ● 111 111
- Index ● 112 112
- Konrad-Zuse-Str.9 113
- 74172 Neckarsulm 113
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