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Adaptec 3405 User Guide - Page 82

Understanding RAID

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Understanding RAID B In this appendix... Understanding Drive Segments 83 Non-redundant Arrays (RAID 0 83 RAID 1 Arrays ...84 RAID 1 Enhanced Arrays...84 RAID 10 Arrays ...85 RAID 5 Arrays ...86 RAID 5EE Arrays...87 RAID 50 Arrays ...88 RAID 6 Arrays ...89 RAID 60 Arrays ...89 Selecting the Best RAID Level 90 When you create arrays (or logical drives), you can assign a RAID level to protect your data. Each RAID level offers a unique combination of performance and redundancy. RAID levels also vary by the number of disk drives they support. This appendix describes the RAID levels supported by your Adaptec RAID controller, and provides a basic overview of each to help you select the best level of protection for your data storage.

Section	Page
About This Guide	12
What You Need to Know Before You Begin	13
Terminology Used in this Guide	13
How to Find More Information	13
Kit Contents and System Requirements	14
Kit Contents	15
System Requirements	15
About Your RAID Controller	17
Standard RAID Controller Features	18
Array-level Features	18
Advanced Data Protection Suite	19
Adding a Battery Backup Module	19
Upgrading the Controller Firmware	19
About the Adaptec RAID 5085	20
About the Adaptec RAID 5405	21
About the Adaptec RAID 5445	22
About the Adaptec RAID 5805/5805Q	23
About the Adaptec RAID 51245	24
About the Adaptec RAID 51645	25
About the Adaptec RAID 52445	26
About the Adaptec RAID 5405Z	27
About the Adaptec RAID 5445Z	28
About the Adaptec RAID 5805Z/5805ZQ	29
About the Adaptec RAID 3085	30
About the Adaptec RAID 3405	31
About the Adaptec RAID 3805	32
About the Adaptec RAID 31205	33
About the Adaptec RAID 31605	34
About the Adaptec RAID 2045	35
About the Adaptec RAID 2405/2405Q	36
About the Adaptec RAID 2805	37
Getting Started	38
Choosing a RAID Level	39
Selecting Disk Drives and Cables	40
Disk Drives	40
Cables	40
Installation Options	41
Basic Installation Steps	42
Installing with an Operating System	42
Installing on an Existing Operating System	42
Installing the Controller and Disk Drives	43
Before You Begin	44
Installing the Controller	44
Installing a RAID Controller	44
Installing a RAID Controller with Zero Maintenance Cache Protection	45
Connecting Disk Drives to Your Controllers	46
Connecting Directly to the Controller	46
Connecting to a System Backplane	47
Connecting MaxIQ Solid State Drives and other SSDs	48
Connecting External Devices	50
Next Steps	50
Creating a Bootable Array	51
Setting the Boot Controller	52
Creating an Array	52
Creating an Array with the ACU	52
Creating an Array with Adaptec Storage Manager	54
Making Your Array Bootable	55
Installing the Driver and an Operating System	56
Before You Begin	57
Creating a Driver Disk	57
Installing with Windows	58
Installing with Windows Server 2003 or Windows XP	58
Installing with Windows Server 2008, Windows 7, or Windows Vista	58
Installing with Red Hat Linux	59
Installing with SUSE Linux	59
Installing with OpenServer	59
Installing with UnixWare	60
Installing with Solaris	60
Installing with VMware	61
Installing with FreeBSD	61
Installing the Driver on an Existing Operating System	62
Before You Begin	63
Creating a Driver Disk	63
Installing on Windows	64
Installing on Windows Server 2003 or Windows XP	64
Installing with Windows Server 2008, Windows 7, or Windows Vista	64
Installing on Red Hat or SUSE Linux	64
Installing on OpenServer	65
Installing on UnixWare	65
Installing on Solaris	65
Installing on VMware	66
Installing on FreeBSD	66
Managing Your Storage Space	67
About Adaptec Storage Manager	68
Installing Adaptec Storage Manager	68
About the Adaptec RAID Controller Configuration Utility	68
About the Adaptec RAID Configuration Utility	69
About the Adaptec Flash Utility	69
Which Utility Should I Use?	69
Solving Problems	70
Troubleshooting Checklist	71
Monitoring Disk Drives Status	71
Silencing the Alarm	71
Recovering from a Disk Drive Failure	72
Failed Disk Drive Protected by a Hot Spare	72
Failed Disk Drive Not Protected by a Hot Spare	72
Failure in Multiple Arrays Simultaneously	72
Disk Drive Failure in a RAID 0 Array	73
Multiple Failures in the Same Array	73
Failed Drive in MaxIQ Pool	73
Resetting the Controller	73
Introduction to SAS	75
Terminology Used in This Chapter	76
What is SAS?	76
How Do SAS Devices Communicate?	77
What’s a Phy?	77
What’s a SAS Port?	78
What’s a SAS Address?	78
What’s a SAS Connector?	78
What do SAS Cables Look Like?	78
How are Disk Drives Identified in SAS?	79
What are the SAS Connection Options?	79
Direct-attach Connections	79
Backplane Connections	79
SAS Expander Connections	80
How is SAS Different from Parallel SCSI?	81
Understanding RAID	82
Understanding Drive Segments	83
Non-redundant Arrays (RAID 0)	83
RAID 1 Arrays	84
RAID 1 Enhanced Arrays	84
RAID 10 Arrays	85
RAID 5 Arrays	86
RAID 5EE Arrays	87
RAID 50 Arrays	88
RAID 6 Arrays	89
RAID 60 Arrays	89
Selecting the Best RAID Level	90
Using the Adaptec RAID Configuration Utility	91
Introduction to the ARC Utility	92
Running the ARC Utility	92
Navigating the ARC Utility	92
Using the ACU to Create and Manage Arrays	92
Creating a New Array	92
Managing Existing Arrays	93
Creating Bootable Arrays	93
Modifying Power Management Settings	93
Modifying Cache Settings	94
Initializing Disk Drives	94
Rescanning Disk Drives	95
Secure Erasing Disk Drives	95
Stopping a Secure Erase	95
Managing Global Hot Spares	95
Using the ACU to Create and Manage JBODs	96
Creating a New JBOD	96
Managing Existing JBODs	96
Converting a JBOD Into a Simple Volume	96
Using the ACU to Manage the MaxIQ Pool	96
Using SerialSelect to Modify Controller Settings	97
Opening SerialSelect	97
Applying Changes and Exiting	97
Modifying Your Controller’s Configuration	97
General Controller Settings	98
Power Management Settings	99
PHY Settings	99
Formatting and Verifying Disk Drives	99
Locating Disk Drives	100
Identifying Disk Drives	100
Viewing the Event Log	102
Using the Array Configuration Utility for DOS	103
Getting Started	104
Working in the ACU Using Menus	104
Running the ACU Using Scripts	105
About Playback Mode	105
About Record Mode	106
Creating the Script File Manually	106
Entering Comments in the Script File	106
Array Definition Block Keywords	107
Array Keyword	107
Drives Keyword	107
End Keyword	108
HotspareDrives Keyword	108
InitializeAll Keyword	108
Method Keyword	109
ReadCache Keyword	109
Size Keyword	109
StripeSize Keyword	109
Type Keyword	110
Wait Keyword	110
WriteCache Keyword	110
ACU Error Codes	110
Sample Scripts	111
Using the Adaptec Flash Utility	113
System Requirements	114
Compatibility Notes	114
Before You Begin	114
Obtaining the Firmware	114
Creating the Firmware Update Disks	115
Running the Menu-based AFU	115
Running the AFU from the Command Line	116
AFU Commands	116
List	116
Save	116
Update	117
Verify	118
Version	118
Help	118
Updating the Flash Using the AFU Command Line	119
Controller LED and I2C Connector Quick Reference	120
Adaptec RAID 5085 LED Connector Specification	121
Adaptec RAID 5405/5405Z LED and I2C Connector Specification	123
Adaptec RAID 5445/5445Z LED and I2C Connector Specification	124
Adaptec RAID 5805/5805Q/5805Z/5805ZQ LED and I2C Connector Specification	126
Adaptec RAID 51245 LED and I2C Connector Specification	128
Adaptec RAID 51645 LED and I2C Connector Specification	130
Adaptec RAID 52445 LED and I2C Connector Specification	132
Adaptec RAID 3085 LED Connector Specification	135
Adaptec RAID 3405 LED and I2C Connector Specification	135
Adaptec RAID 3805 LED and I2C Connector Specification	137
Adaptec RAID 31205 LED and I2C Connector Specification	139
Adaptec RAID 31605 LED and I2C Connector Specification	142
Adaptec RAID 2045 LED Connector Specification	147
Adaptec RAID 2405/2405Q LED and I2C Connector Specification	147
Adaptec RAID 2805 LED and I2C Connector Specification	148
Safety Information	150
Electrostatic Discharge (ESD)	150
Technical Specifications	151
Environmental Specifications	152
DC Power Requirements	152
Current Requirements	152

Match case Limit results 1 per page

Understanding RAID

In this appendix...

Understanding Drive Segments

.............................................................................................

Non-redundant Arrays (RAID 0)

..........................................................................................

RAID 1 Arrays

........................................................................................................................

RAID 1 Enhanced Arrays

.......................................................................................................

RAID 10 Arrays

......................................................................................................................

RAID 5 Arrays

........................................................................................................................

RAID 5EE Arrays

....................................................................................................................

RAID 50 Arrays

......................................................................................................................

RAID 6 Arrays

........................................................................................................................

RAID 60 Arrays

......................................................................................................................

Selecting the Best RAID Level

................................................................................................

When you create arrays (or logical drives), you can assign a RAID level to protect your data.

Each RAID level offers a unique combination of performance and redundancy. RAID levels

also vary by the number of disk drives they support.

This appendix describes the RAID levels supported by your Adaptec RAID controller, and

provides a basic overview of each to help you select the best level of protection for your data

storage.