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HP StorageWorks LUN Configuration Manager XP: user’s guide
Note the following limitations:
• You cannot combine LDEVs from different control units.
• Windows NT hosts cannot access more than 32 logical units.
• Some operating systems may experience slow disk access times with
large logical units.
The following are guidelines for LU Size Expansion:
• A maximum of 256 expanded LUNs can be configured on the same
port.
• The LDEVs that will become members of the LUSE must not have
SCSI paths assigned. These are known as free (or available) LDEVs.
• To make an LDEV free, it must have its SCSI paths deleted, which
requires that it be offline (unmounted from all hosts).
• Combining nonsequential LDEVs into a LUSE is supported, provided
they are on the same CU.
• Combining customized volumes into a LUSE is supported, provided
they have the same size, emulation type, and CU. The order of
operations is important: you must first create the volumes, and then
combine those volumes into a LUSE volume.
• Combining customized volumes and normal volumes into the same
LUSE is not supported.
• Combining command devices into a LUSE is not supported.
• Combining RAID1 and RAID5 into the same LUSE is not supported.
• Combining emulation types (OPEN-x) into the same LUSE is not
supported.
• Factors relevant to recommended LUSE size include the following:
Some operating systems may exhibit slow disk access times with large
logical units if they contain too many high usage files. The size of a
LUSE can also affect the amount of time required to perform backups.
• The queue depth for open systems can vary depending on the platform.
- HP StorageWorks LUN 1
- Configuration Manager XP 1
- Contents 3
- About this guide 5
- Conventions 6
- Getting help 6
- HP technical support 7
- HP storage website 7
- HP authorized reseller 8
- Revision history 9
- Warranty statement 10
- About this guide 11 11
- Introduction 13
- Installation requirements 14
- Important terms and concepts 15
- Installation 17
- Installation 19 19
- Installation 21 21
- Operation 23
- Operation 25 25
- Option Description 26
- Operation 27 27
- Operation 29 29
- Operation 31 31
- Operation 33 33
- Configuration window 35
- Setting the host mode 36
- Operation 37 37
- Port box 38
- 5. Select Confirm 38
- Operation 39 39
- To set a command device: 41
- Operation 43 43
- To reset a command device: 44
- SCSI paths with the 45
- Operation 47 47
- Operation 49 49
- Operation 53 53
- Operation 55 55
- Operation 57 57
- LU size expansion 59
- Creating expanded LUNs 61
- Operation 63 63
- Operation 65 65
- Expanding dispersed LUNs 67
- Operation 69 69
- 6. Select the OK button 70
- 8. Select the Detail button 71
- Operation 73 73
- Releasing an expanded LUN 74
- Operation 75 75
- Operation 77 77
- VSC operations 79
- • “VSC parameters” (page 81) 80
- VSC parameters 81
- Custom volume capacity 82
- XP256 VSC operations 83
- Starting VSC operations 84
- VSC operations 85 85
- VSC operations 87 87
- 6. Select Define 88
- VSC operations 89 89
- VSC operations 93 93
- 3. Select Next to continue 94
- VSC operations 95 95
- Installing custom volumes 97
- 7. Select Define 99
- VSC operations 101 101
- Deinstalling custom volumes 102
- VSC operations 103 103
- 6. Select Detail 104
- 8. Select Delete CV 105
- A confirmation window opens 105
- VSC operations 107 107
- VSC operations 109 109
- 7. Select Delete CV 110
- 8. Select Yes to continue 110
- VSC operations 111 111
- XP512 VSC operations 113
- VSC operations 115 115
- VSC operations 117 117
- VSC operations 119 119
- VSC operations 121 121
- VSC operations 123 123
- VSC operations 125 125
- CV(s), and select Detail 126
- VSC operations 127 127
- Configuring new volumes 128
- VSC operations 129 129
- VSC operations 131 131
- Deleting VSC volumes 133
- VSC operations 135 135
- Troubleshooting 137
- Error conditions 138
- Calling the HP Support Center 138
- Glossary 139
- Glossary 141 141
- Index 143 143
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