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Adaptec 2110S User Guide - Page 128

RAID 5 Set, if one drive fails.

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Adaptec Storage Manager Pro User's Guide RAID 5 Set The RAID 5 set is similar to a stripe set, except that it uses parity to provide redundancy. A RAID 5 set must be made up of at least three equal-sized partitions on different drives, and the data is striped evenly across its respective drives in equal-sized chunks. You must have at least three partitions to permit the system to rebuild the data if one drive fails. As data is striped across the partitions, one chunk of each stripe is used for parity data. The parity chunks are distributed across all participating drives of the RAID 5 set, so parity operations are evenly divided among all the partitions in the array. Figure A-6 represents a RAID 5 set made up of four partitions, each on different drives. The free space of the larger drive is not used. RAID 5 Set A 12 GB Chunks 1,2,3,4,5,6,7,8, 9,10,11,12,13,14,15... Drive 1 Partition A1 4 GB Chunks 1,P*,7,10,13... *P = Parity Drive 2 Drive 3 Partition A2 4 GB Chunks 2,4,P*,11,14... Partition A3 4 GB Chunks 3,5,8,P*,15... Drive 4 Free Space Partition A4 4 GB Chunks P*,6,9,12,P*... Figure A-6. RAID 5 set A-10

Section	Page
Adaptec Storage Manager™ Pro v1.11	1
Copyright	2
Trademarks	2
Changes	2
Disclaimer	2
Adaptec Software License Agreement	3
Adaptec, Inc. Legal Department 691 South Milpitas Boulevard Milpitas, California 95035	5
Contents	7
Getting Started	12
About This Guide	13
Conventions	13
Getting Online Help	13
Starting Adaptec Storage Manager Pro	14
Checking to See If the Service or Daemon Is Running	14
Starting the Service or Daemon Manually	15
Logging In to Storage Manager Pro	15
Starting Storage Manager Pro on Windows NT/2000 or Windows 95/98	16
Starting Storage Manager Pro on NetWare	17
Starting Storage Manager Pro on Linux/FreeBSD	18
Understanding the Dashboard	19
System Commands	20
General Commands	20
Changing How the Dashboard Looks	21
Using System Filters	22
Understanding the System Browser	23
System Browser Window Parts	24
Navigating the System Browser Window	25
Changing How the System Browser Looks	28
Uninstalling Storage Manager Pro	28
Windows NT, 2000, 95, or 98	28
NetWare	28
Linux/FreeBSD	30
Creating an Array	31
Creating an Array Using the Wizard	32
Creating a Custom Array	34
Understanding the Selected Drive Icons	38
Viewing and Setting the Default Array Creation Properties	38
Stripe Size	41
Write Cache Settings	42
Making the Array Available for Use	43
Managing Arrays	44
Replacing a Failed Drive in an Array	44
Expanding Array Capacity	45
Changing Array Settings or Properties	47
Changing the Write Cache Properties	47
Saving and Restoring a Configuration to a File	48
Deleting an Array	50
Viewing Array Properties	51
Managing Controllers on Remote Systems	53
Understanding Remote Access	54
Setting Up Remote Access for the First Time	56
Setting Up Remote Access from the Directory Manager	56
Setting Up Remote Access from a Member of the Management Set	58
Adding a System to an Existing Management Set	59
Accessing Remote Systems	61
How Storage Manager Pro Handles Duplicate Login Names	61
Checking Which System Is the Directory Manager	62
Moving a System from One Management Set to Another	62
Removing a System from a Management Set	63
Moving the Directory Manager to Another System	64
Managing Storage Manager Pro Users	66
Understanding User Accounts	66
Adding User Accounts	68
Changing User Accounts	70
Deleting User Accounts	71
Changing Your Password	72
Monitoring System Status	74
Monitoring Events	74
Viewing Events	75
Using the System Filter	75
Using the Time and Date Filter	76
Deleting Events	77
Viewing Task Progress	78
Understanding Array Creation	79
Terminating a Task	79
Understanding the Details Pane Status Column	79
Setting Up Event Notification	80
Defining and Modifying Notification E-mail Settings	81
Adding Notification Recipients	82
Changing Recipient Properties	84
Deleting Notification Recipients	86
Sending a Test E-mail Notification	86
Managing Spares	88
Understanding How Spares and Failover Work	88
Managing the Spare Pool	89
Adding a Drive to the Spare Pool	89
Removing a Drive from the Spare Pool	90
Viewing Spare Assignments and Status	91
Spare Management Guidelines	91
Managing Disk Drives and Partitions	93
Understanding Disk Drives	93
Replacing Disk Drives	94
Formatting a Disk Drive	95
Blinking a Disk Drive	96
Viewing Disk Drive Properties	96
Understanding Partitions	97
Viewing Partition Properties	98
Managing Controllers	99
Setting Controller Task Priority	99
Rescanning a Controller	100
Reconditioning the Battery	101
Testing the Alarm on the Controller	103
Viewing Controller Properties	104
Viewing Channel Properties	105
Managing Enclosures	106
Understanding Enclosures	106
Viewing Enclosure Status	107
Turning Off Enclosure Alarms	108
Setting the Fan Speed	109
Preparing and Activating Slots	111
Identifying Slots	112
Turning Power Supplies On and Off	113
Viewing Enclosure Properties	113
Troubleshooting	115
Problems Installing and Starting Storage Manager Pro	115
Resolving Problems Shown by the Status Indicators	116
Using the Diagnose Button	116
Managing Controllers on Remote Systems	118
Storage Concepts	119
Devices	119
Controllers	120
Channels	120
Disk Drives	120
Free Space	121
Partitions	121
Redundancy	122
Arrays	122
Array Types	124
Volume Set	125
Stripe Set (RAID 0)	126
Mirror Set (RAID 1)	127
RAID 5 Set	128
Stripe Set of Mirror Sets (RAID 0/1)	129
Stripe Set of RAID 5 Sets (RAID 0/5)	130
Choosing Your Array Type	131
If You Are New to Arrays	132
If You Have Experience with Arrays	132
Storage Manager Pro Array Types	132
Array Selection Examples	134
Array Decision Chart	136
Understanding the Array Selection Criteria	138
Comparing the Selection Criteria	139
Glossary	140
A	140
B	140
C	140
D	141
E	141
F	142
H	142
J	142
L	142
M	143
P	143
R	143
S	144
T	145
V	146
Z	146
Index	147
A	147
B	148
C	148
D	149
E	150
F	151
G	151
H	151
I	151
J	151
L	151
M	152
N	152
O	153
P	153
R	153
S	154
T	156
U	157
V	157
W	157