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Adaptec 2169400-R User Guide - Page 165

RAID 6 Logical Drives, a RAID 60 logical drive-also referred to

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Appendix C: Selecting the Best RAID Level ● 165 RAID 6 Logical Drives A RAID 6 logical drive-also referred to as dual drive failure protection-is similar to a RAID 5 logical drive because it uses data striping and parity data to provide redundancy. However, RAID 6 logical drives include two independent sets of parity data instead of one. Both sets of parity data are striped separately across all disk drives in the logical drive. RAID 6 logical drives provide extra protection for your data because they can recover from two simultaneous disk drive failures. However, the extra parity calculation slows performance (compared to RAID 5 logical drives). RAID 6 logical drives must be built from at least four disk drives. Maximum stripe size depends on the number of disk drives in the logical drive. Disk Drive 1 250 GB Drive Segment Size (Smallest Disk Drive) Disk Drive 2 250 GB Disk Drive 3 400 GB Disk Drive 4 400 GB Disk Drives in Logical Drive Disk Drive 1 1 P1 ... P2 Disk Drive 2 2 P2 ... 449 Disk Drive 3 P1 3 ... P1 Disk Drive 4 P2 4 ... 500 Unused Space = 150 GB Unused Space = 150 GB RAID 6 = 500 GB plus Parity (P1 & P2) Logical Drive RAID 60 Logical Drives Similar to a RAID 50 logical drive (see page 164), a RAID 60 logical drive-also referred to as dual drive failure protection- is built from at least eight disk drives configured as two or more RAID 6 logical drives, and stripes stored data and two sets of parity data across all disk drives in both RAID 6 logical drives. Two sets of parity data provide enhanced data protection, and striping improves performance. RAID 60 logical drives also provide high data transfer speeds.

Section	Page
About This Guide	13
How This Guide is Organized	14
What You Need to Know Before You Begin	14
Terminology Used in this Guide	14
Part I: Getting Started	15
Introduction to Adaptec Storage Manager	16
Getting Started Checklist	17
About Adaptec Storage Manager	17
About the Adaptec Storage Manager Agent	17
Growing Your Storage Space with Adaptec Storage Manager	18
A Simple Storage Space	18
An Advanced Storage Space	18
Continuing to Grow Your Storage Space	19
Adding Enhanced Features	20
Unlocking the Enhanced Features	20
System Requirements	21
Installing and Starting Adaptec Storage Manager	22
Installing Adaptec Storage Manager	23
Installing on Windows	23
Completing a Silent Windows Installation (Advanced)	24
Example Command Line Installations	25
Installing on Linux	25
Installing on NetWare	26
Installing on UnixWare or OpenServer	26
Installing on Solaris	27
Using Adaptec Storage Manager on VMWare	27
Starting Adaptec Storage Manager	28
Starting Adaptec Storage Manager on Windows	28
Starting Adaptec Storage Manager on Linux	29
Starting Adaptec Storage Manager on NetWare	29
Starting Adaptec Storage Manager on UnixWare or OpenServer	29
Starting Adaptec Storage Manager on Solaris	29
Starting the Adaptec Storage Manager Agent Only	30
Starting the Agent on Windows	30
Starting the Agent on Linux	30
Starting the Agent on NetWare	31
Starting the Agent on UnixWare or OpenServer	31
Starting the Agent on Solaris	31
Understanding Permission Levels	32
Administrator Level	32
User Level	32
Guest Level	32
Configuring NetWare User Authentication	33
Out-of-box Authentication	33
NDS Authentication	33
Logging Out of Adaptec Storage Manager	34
Logging Back In	34
Running Adaptec Storage Manager from the CD	34
When to Choose Bootable-CD Mode	34
Bootable-CD Mode Limitations	34
Getting Started in Bootable-CD Mode	35
Running Adaptec Storage Manager from the CD	35
Exploring Adaptec Storage Manager	37
Navigating the Main Window	38
Using the Enterprise View	39
Using the Physical Devices View	40
Using the Logical Devices View	41
Revealing More Disk Drive Information	42
Checking System Status	43
Working in Adaptec Storage Manager	44
About the Actions Menu	44
Getting Help	44
Building Your Storage Space	45
Selecting a Configuration Method	46
Express Configuration: Building the Easy Way	46
Partitioning and Formatting Your Logical Drives	48
Including More Systems in Your Storage Space	49
Custom Configuration (Advanced)	49
Including More Systems in Your Storage Space	53
Building a RAID Volume	54
RAID Controller Support	55
Managing Your Storage Space	56
Customizing Adaptec Storage Manager	57
Logging In to Remote Systems	58
Removing a Remote System	59
Creating Display Groups	60
Setting Preferences and Changing Views	61
Sorting Systems in the Enterprise View	61
Setting the Standard Unit of Measure	62
Changing the Main Window Appearance	62
Customizing the Adaptec Storage Manager Agent	62
Broadcasting Event Alerts from a System	63
Changing a System’s Event Log Setting	63
Changing a System’s Audible Alarm Settings	64
Changing a System’s Agent Base Port Number	64
Part II: Using Adaptec Storage Manager	65
Managing Logical Drives and Hot Spares	66
Understanding Logical Drives	67
Creating Logical Drives	68
Setting the Size of a Logical Drive	68
Including Different-sized Disk Drives in a Logical Drive	69
Creating a Logical Drive Using Available Space	70
Fine-tuning Logical Drives	71
Renaming a Logical Drive	71
Adjusting a Logical Drive’s Advanced Settings	71
Changing the Stripe Size	72
Changing the Write Cache Setting	72
Changing the Read Cache Setting	73
Changing the Initialize Priority	73
Changing the Initialize Method	73
Verifying Logical Drives	74
Verifying and Fixing a Logical Drive	75
Verifying a Logical Drive (Without Fix)	76
Enabling/Disabling Background Consistency Check	76
Increasing the Capacity of a Logical Drive	77
Extending a Partition on a Logical Drive	78
Changing the RAID Level of a Logical Drive	79
Deleting a Logical Drive	80
Working with Hot Spares	81
Hot Spare Limitations	81
Dedicated Spare or Global Spare?	81
Designating a Global Hot Spare	82
Assigning a Dedicated Hot Spare or Pool Hot Spare	83
What Do the Hot Spare Icons Mean?	83
Removing or Deleting a Dedicated Hot Spare	84
Deleting a Global Hot Spare	84
Protecting Your Data	86
Creating a Snapshot	87
Snapshot Limitations	87
Creating a Snapshot with Backup	88
Creating a Snapshot Without Backup	88
Deleting a Snapshot	89
Enabling Copyback	89
Monitoring Your Storage Space	90
Monitoring Options	91
Checking Activity in Your Storage Space	91
Viewing the Full List of Events	92
Clearing the Event Log	92
What Do the Status Icons Mean?	92
Using Notifications to Monitor Status	93
Setting up Event Notifications	93
Opening the Notification Manager and Adding Systems	93
Sending a Test Event	95
Managing the Event Notification List	96
Modifying a System’s Address, Host Name, or Notification Level	96
Removing a System from the Notification List	96
Monitoring and Managing the Notification Log	97
Using the Notification Log	97
Clearing the Notification Log	98
Disabling Event Notifications	98
Re-enabling Event Notifications	98
Setting Up Email Notifications	99
Opening the Email Notification Manager	99
Entering the SMTP Server Settings	100
Adding an Email Recipient	100
Sending a Test Message	101
Managing the Email List	102
Modifying a Recipient’s Information	102
Removing a Recipient from the Email List	102
Monitoring and Managing the Email Log	103
Using the Email Log	103
Clearing the Email Log	103
Changing the Email Notification Manager Settings	104
Disabling Email Notifications	105
Re-enabling Email Notifications	105
Broadcasting Event Alerts to Users	105
Managing Enclosure Status	106
Silencing and Testing the Audible Alarm	107
Enabling a System’s Alarm	107
Testing the Alarm	108
Silencing the Alarm	108
Managing Tasks	109
Scheduling a Task	110
Opening the Task Manager	111
Monitoring Tasks	112
Monitoring Upcoming Tasks in the Task List	112
Checking Past Tasks and Events in the Event Log	112
Modifying a Task	113
What if a task misses its start time?	113
Deleting a Task	114
Disabling the Task Manager	114
Re-enabling the Task Manager	115
Working with Display Groups	116
Adding a System to a Display Group	117
Viewing Display Group Status	117
Moving a System from One Display Group to Another	118
Renaming a Display Group	118
Removing a System from a Display Group	119
Deleting a Display Group	119
Managing Controllers, Disk Drives, and Enclosures	120
Viewing Component Properties	121
Blinking a Component	121
Managing Disk Drives	122
Replacing Disk Drives in a Logical Drive	122
Setting a Disk Drive to ‘Failed’	122
Initializing Disk Drives	123
Managing Controllers	124
Registering New Controllers	124
Testing a Controller Alarm	124
Silencing a Controller Alarm	125
Disabling a Controller Alarm	125
Rescanning a Controller	125
Saving Your Controller Configuration	126
Managing Enclosures	126
Testing an Enclosure Alarm	126
Silencing an Enclosure Alarm	127
Disabling an Enclosure Alarm	127
Updating Controller BIOS and Firmware	128
Before You Begin	128
Updating the Controller BIOS and Firmware	128
Configuring SNMP Support	130
Configuring SNMP Support on Windows	131
Configuring SNMP Support on Linux	132
Configuring SNMP Support on NetWare	132
Solving Problems	133
Troubleshooting Adaptec Storage Manager	134
Identifying a Failed or Failing Component	134
Recovering from a Disk Drive Failure	135
Failed Disk Drive Protected by a Hot Spare	135
Failed Disk Drive Not Protected by a Hot Spare	136
Failure in Multiple Logical Drives Simultaneously	136
Disk Drive Failure in a RAID 0 Logical Drive	136
Multiple Failures in the Same Logical Drive	137
Removing a Failed Disk Drive’s Icon	137
Rebuilding Logical Drives	137
Solving Notification Problems	138
Creating a Support Archive File	138
Understanding Error and Warning Messages	139
Warning Messages	139
Error Messages	139
Part III: Quick Reference	145
Quick Answers to Common Questions...	146
How do I...?	147
Set up my storage space?	147
Create or add a new logical drive?	147
Open the Configuration wizard?	147
Turn off the alarm?	147
Add a new user to Adaptec Storage Manager?	147
Add a remote system?	147
Prevent a user from changing my storage space?	147
Check disk drive or logical drive status?	147
Access a feature with a padlock icon beside it?	147
Log out of Adaptec Storage Manager?	148
Schedule a task?	148
Find the Task Manager?	148
Find the Notification Manager?	148
Find the Email Notification Manager?	148
What’s the difference between...?	149
Adaptec Storage Manager and the Agent?	149
Internal RAID and External RAID branches of the Enterprise View?	149
Event notifications, email notifications, and event alerts?	149
What options are on the Actions menu?	150
Local and remote systems	150
Controllers?	150
Disk drives?	150
Enclosures?	151
Logical drives?	151
Internal RAID storage?	151
The Notification Manager?	151
The Email Notification Manager?	152
The Task Manager?	152
What tasks can be scheduled to run at a specified time?	152
Buttons and Icons At-a-Glance	153
Enterprise View Icons	154
Icons in the Physical Devices View	154
Enclosure Status Icons	154
Icons in the Logical Devices View	155
Buttons in the Main Window	155
Buttons in the Notification Manager	156
Buttons in the Email Notification Manager	156
Buttons in the Task Manager	156
Selecting the Best RAID Level	157
Comparing RAID Levels	158
Understanding Drive Segments	158
Non-redundant Logical Drives (RAID 0)	159
RAID 1 Logical Drives	160
RAID 1 Enhanced Logical Drives	160
RAID 10 Logical Drives	161
RAID 5 Logical Drives	162
RAID 5EE Logical Drives	163
RAID 50 Logical Drives	164
RAID 6 Logical Drives	165
RAID 60 Logical Drives	165
Glossary	166
Index	171