Adaptec 6320SS - DuraStor Hard Drive Array Guide de l'utilisateur Page 110
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- Table des matières
- DEPANNAGE
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
A-7
Storage Concepts
The types of arrays you can create depends on the maximum
number of disk drives you can use on the controller.
RAID 5 set ■ Lower cost than RAID 1
■ Very hig h re ad
performance (similar to
RAID 0)
■ Very high data protection
(similar to RAID 1)
■ Supports multiple
simultaneous read and
write operations
■ Can be optimized for
large, sequential requests
■ Write performance is
slower than a stripe set
(RAID 0) or mirror set
(RAID 1)
Stripe set of
mirror sets
(RAID 0/1)
■ Very high performance
■ Highest data protection;
can tolerate some cases of
multiple disk drive
failures
■ High inherent cost,
because twice the
storage capacity is
required. Requires a
minimum of four disk
drives
Stripe set of
RAID 5 sets
(RAID 50)
■ Lower cost than RAID 0/1
■ Higher performance than
RAID 5
■ Very hig h re ad
performance
■ Very high data protection
■ Optimized for multiple
simultaneous read and
write operations
■ High inherent cost,
because twice the
storage capacity is
required. Requires a
minimum of four disk
drives
Table A-1. Common Array Types
Array Type Strengths Weaknesses
- Adaptec Disk Array 1
- Administrator 1
- Copyright 2
- Trademarks 2
- Disclaimer 2
- Contents 3
- 3 Monitoring System Status 4
- 4 Managing Spares 4
- 5 Configuring the Controller 4
- 7 Troubleshooting 5
- A Storage Concepts 6
- B SAF-TE Implementation 6
- Getting Started 7
- Getting Online Help 8
- ↑ or ↓ key 10
- Changing the Screen Display 11
- Creating and Managing 12
- Arrays and Partitions 12
- Managing Arrays 20
- Viewing Array Status 22
- Viewing Disk Drive Status 23
- Verifying an Array 24
- Viewing Verification Status 25
- Reconstructing an Array 26
- Expanding Array Capacity 27
- Viewing Expansion Status 28
- Changing an Array Name 29
- Changing Array Ownership 29
- Trusting an Array 30
- Deleting an Array 32
- Managing Partitions 33
- Viewing Partition Status 35
- Viewing Partition Statistics 36
- ■ I/O size 37
- Expanding a Partition 38
- Changing a Partition Name 38
- Changing a Partition LUN 39
- Deleting a Partition 40
- Monitoring System Status 41
- Viewing the Most Recent Event 43
- Viewing One Event at a Time 43
- Information 44
- Displaying Overall Statistics 47
- Resetting Overall Statistics 49
- Managing Spares 50
- Managing Dedicated Spares 51
- Enabling Dynamic Spares 52
- Managing the Spare Pool 54
- Displaying the Spare Pool 55
- Configuring the Controller 56
- Rebooting the Controller 57
- Changing the Date and Time 57
- Configuring the Host Channels 58
- Configuring the SCSI Channels 61
- Understanding Operating Modes 63
- Changing the Operating Mode 65
- Managing the Other Controller 66
- Killing the Other Controller 68
- Disabling SCSI Channel 3 69
- Changing the Sample Rate 70
- Locking the Cache 72
- Configuring the Battery 73
- 2 Select Yes and press Enter 74
- 3 Press Enter to reboot 74
- Changing the Utility Priority 75
- Rescanning All Channels 76
- Pausing I/O 77
- Restoring Default Settings 78
- Managing Disk Drives and 79
- Enclosures 79
- Displaying All Disk Drives 80
- Displaying Disk Cache Status 82
- Blinking a Disk Drive LED 83
- Taking Down a Disk Drive 84
- Testing a Disk Drive 85
- Managing SAF-TE Enclosures 86
- ■ Type NONE and press Enter 87
- Input Problems 90
- Array Problems 91
- Host SCSI Channel Problems 92
- Device SCSI Channel Problems 93
- Problems During Bootup 94
- Warning and Error Events 96
- Disk Channel 99
- Sense Key 99
- Sense Code 99
- Sense Code Qualifier 99
- Disk Channel SCSI ID 101
- Error Code 101
- Troubleshooting 103
- Storage Concepts 104
- Channels 105
- Disk Drives 105
- Controllers 105
- Storage Systems 105
- Free Space 107
- Partitions 107
- Array on Virtual 108
- Redundancy 109
- Array Types 109
- Volume Set 111
- Stripe Set (RAID 0) 111
- Mirror Set (RAID 1) 113
- , with one chunk of each 114
- Figure A-6 RAID 5 set 115
- SAF-TE Implementation 119
- Enclosure Considerations 120
- Host Communication Methods 121
- Glossary 122
- Glossary-2 123
- Glossary-3 124
- Glossary-4 125
- Glossary-5 126
- Glossary-6 127
- Glossary-7 128
- . See also 129
- Glossary-9 130
- Glossary-10 131
- Glossary-11 132
- Adaptec, Inc 139
- 691 South Milpitas Boulevard 139
- Milpitas, CA 95035 USA 139
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