Seagate ST39173WC Specifications Page 51
- Page / 122
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
Chapter 3 RAID Manager Installation and Configuration 3-7
Caution – If write cache is turned on in dual/active mode you must also have it
mirrored. Failure to do so may result in data corruption if a controller fails.
3.2.5 Reconstruction Rate
■ Reconstruction rate depends on the "Reconstruction Rate setting" and the I/O
load on the module. Refer to Chapter 7 "Maintenance and Tuning" in the Sun
StorEdge RAID Manager User’s Guide.
■ Under optimal conditions (system idle with no other I/Os to the A3x00), it takes
about two minutes to reconstruct a 1-GB (4+1) RAID 5 LUN under RAID Manager
6.22. If the LUN is active with host I/O request, it could take up to 10 minutes to
reconstruct 1 GB of storage.
■ Reconstruction can start only if certain requirements have been met. If a controller
has failed, no reconstruction will start until the controller is Optimal.
■ Only one reconstruction can be in progress at a time for a given controller.
■ The reconstruction rate can vary by 50%, depending on the model of disk drive in
the trays.
■ LUNs can only be reconstructed by the controllers that own them.
■ The following sequence of events indicates how the LUN status changes:
1. Initially, in a (4+1) RAID 5 configuration, LUN X is Optimal.
2. RAID Manager 6 detects a bad drive in LUN X.
3. The status of LUN X then changes to degraded.
If there is a GHS, LUN X status changes to reconstructing; otherwise, LUN X
remains in degrade.
Note – The GHS must be of a size greater than or equal to the failed drive.
LUN X will remain in the reconstructing state until reconstruction with GHS has
been completed, even though the bad disk has been replaced.
After the reconstruction with GHS has been completed, LUN status switches to
Optimal. Copyback to the replaced drive starts when LUN status changes to
Optimal. New data will continue to be written to the GHS until the copyback
process is complete. Then the GHS returns to the GHS pool.
■ For recovery under RAID Manager 6.1.1, refer to Chapter 5 in the Sun StorEdge
RAID Manager 6.1.1 User’s Guide for details.
■ For recovery under RAID Manager 6.22, refer to Chapter 6 in the Sun StorEdge
RAID Manager 6.22 User’s Guide for details.
- Sun StorEdge 1
- A1000 and 1
- A3x00/A3500FC Best Practices 1
- Contents 3
- Contents v 5
- Contents vii 7
- Figures ix 9
- Tables xi 11
- Before You Read This Book 13
- How This Book Is Organized 14
- Using UNIX Commands 14
- Typographic Conventions 15
- Shell Prompts 15
- Related Documentation 16
- Accessing Sun Documentation 17
- Sun Welcomes Your Comments 17
- Troubleshooting Overview 19
- A3x00/A3500FC disk array 20
- 1.2.1 Documentation 21
- 1.2.2 Web Sites 22
- 1.2.3 Internal Directory 22
- Supported 23
- 1.2.6 Serial Cable 23
- 1.3 Tips for Filing a Bug 24
- 1.4 FINs and FCOs 24
- Date Product Description 25
- Hardware Installation and 31
- Configuration 31
- 2.1 New Installation 32
- 2.1.3 Power Sequencer 33
- 2.1.4 Local/Remote Switch 33
- Switch Settings 34
- 2.1.7 World Wide Name (WWN) 35
- Existing A3x00 Arrays 36
- Chaining Configurations 40
- 2.7 Supported Configurations 41
- 2.7.2 Onboard SOC+ 42
- 2.7.6 HBAs 43
- 2.8 SCSI to FC-AL Upgrade 44
- RAID Manager Installation and 45
- 3.1.1 Software Installation 46
- 3.1.2 Software Configuration 47
- 3.2 LUN Creation/RAID Level 49
- 3.2.2 LUN Numbers 50
- 3.2.3 The Use of RAID Levels 50
- 3.2.4 Cache Mirroring 50
- 3.2.5 Reconstruction Rate 51
- 3.2.7 DacStor Size (Upgrades) 52
- 3.4.1 NVSRAM Settings 53
- 3.4.2 Parity Check Settings 54
- 3.4.2.3 Parity Repair 55
- 4.1 Installation 58
- 4.2 Solaris Kernel Driver 58
- 0 0x0 0x0 0x0 0xe 0x12 59
- 4.3 format and lad 60
- 4.3.1 Volume Labeling 61
- 4.4.1 Removing Ghost Drives 64
- 4.5 Device Tree Rearranged 65
- 4.5.1.1 Workaround 66
- 4.6 SNMP 67
- Managers 68
- 4.7.3 Sun Cluster 69
- 4.7.4 High Availability (HA) 69
- 4.7.5 Quorum Device 70
- Maintenance and Service 71
- 5.1.1 Disk Drives 73
- 5.1.2 Disk Tray 74
- 5.1.3 Power Sequencer 75
- 5.1.4 SCSI Cables 76
- 5.1.5 SCSI ID Jumper Settings 77
- 5.1.7 LED Indicators 77
- 5.1.8 Backplane Assembly 77
- 5.1.9 D1000 FRUs 77
- 5.1.10 Verifying the HBA 78
- A3x00/A3500FC 78
- 5.1.12 Controller Board LEDs 79
- 5.2 FRU Replacement 80
- 5.2.2 Interconnect Cables 81
- 5.2.3 Power Cords 81
- 5.2.4 Power Sequencer 81
- 5.2.5 Hub 82
- 5.2.8 Battery Unit 83
- 5.2.7 Amount of Cache 83
- 5.2.9 Cooling 84
- 5.2.10 Disk Drives 84
- 5.2.11 Disk Tray 84
- 5.2.12 Midplanes 85
- 5.3.2 RAID Manager 6 Upgrade 88
- 5.3.3 Firmware Upgrade 88
- How to Recover 92
- 6.2 LUNs Not Seen 96
- Reinitialization 97
- VKI_EDIT_OPTIONS 100
- 6.4 Dynamic Reconfiguration 101
- Takes Too Long 102
- 6.6 GUI Hang 103
- Problems 103
- Manager 6.22 104
- is running 107
- reading past the end of the 107
- Reference 109
- A.1 Scripts and man Pages 110
- Information for CPRE/PDE 111
- PCI/SBus Systems 112
- A.4 A3500/A3500FC Electrical 113
- Specifications 113
- A.5 Product Names 115
- NVSRAM Product ID 116
- NUMERICS 117
- command, 6–17 119
© 2020, manymanuals.com. All rights reserved. | 0.400 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals