Hp XP P9500 Storage User Manual Page 27
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LUN Expansion
External volumes can be used in a LUSE volume with the following restrictions:
• An internal volume in the local storage system and a mapped external volume cannot be
combined to form a LUSE volume.
• Only LDEVs from the same external storage system can be used in a LUSE volume. Do not
combine LDEVs of multiple external storage systems to create a LUSE volume, otherwise the
following occurs:
◦ When one external volumes is lower performing than others, it affects the performance
of the LUSE volume.
◦ If an external volume that is part of a LUSE volume is blocked, the data reliability of the
LUSE volume deteriorates because the LUSE volume has both accessible areas and
inaccessible areas from a host.
◦ If an external volume in a LUSE volume is disconnected or reconnected, all external
volumes in the LUSE volume must be disconnected or reconnected at the same time.
• All external volumes in a LUSE volume must use the same Cache Mode setting. For more
information about this setting, see “Cache use and external storage performance” (page 14).
Performance Monitor and Auto LUN V2
Performance Monitor can be used to display monitoring information for mapped external volumes.
Mapped volumes can also be used for Auto LUN. The following figure shows an example of an
external volume used as the source volume in a Auto LUN operation. Existing data in the external
volume is migrated manually to the local system’s native internal volume.
Procedure 1 To use an external volume for volume migration
1. Map the external volume. If using the external volume as a source volume, set Emulation Type
to OPEN-V. This is required to access existing data in an external volume from the local system
(for volume migration as well as replication).
2. Ensure that both volumes have the same capacity. Adjust the capacity as needed using the
LUSE and the Virtual LVI/Virtual LUN functions.
3. Set the source and target volumes.
4. Migrate the data using Auto LUN.
LUN Expansion 27
- Abstract 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- 1 Overview 7
- Typical components 8
- External storage system 9
- External volume 9
- Internal volume 9
- Interfaces 9
- Spreadsheets 10
- 2 Requirements and planning 11
- Planning external volumes 13
- 14 Requirements and planning 14
- Mainframe volumes 15
- Open systems volumes 16
- External volume groups (ExGs) 16
- Planning external volumes 19 19
- External paths 20
- Multi path mode 21
- 22 Requirements and planning 22
- Direct connection 23
- Switch connection 23
- Default mapping settings 24
- Cache Residency 25
- Snapshot 25
- Smart Tiers Z, and Fast Snap 26
- Local replication software 26
- LUN Expansion 27
- Remote replication software 28
- 4 Setting up external volumes 29
- Mapping an external volume 30
- Mapping an external volume 31 31
- Mapping an external volume 33 33
- Using mapped volumes 35
- 5 Monitoring and maintenance 36
- 38 Monitoring and maintenance 38
- Editing external WWN settings 39
- Path maintenance 40
- Path maintenance 41 41
- Reconnecting an external path 42
- Path maintenance 43 43
- Replacing all external paths 44
- Prerequisite requirements 45
- 46 Monitoring and maintenance 46
- ◦ A pool-VOL 48
- 50 Monitoring and maintenance 50
- 6 Support and other resources 52
- Typographic conventions 53
- General troubleshooting 54
- • Illegal request 57
- • Cannot detect port 57
- HP1024/HP128 Disk Array 58
- HP512/HP48 Disk Array 59
- Thunder 9500V 59
- HUS/AMS/WMS 60
- External systems 62
- HUS VM Storage System 62
- HP P9500 62
- HP24000/HP20000 Disk Array 62
- AMS 2000 series guidelines 67
- SVS200 storage system 68
- EVA storage system 68
- Sun StorEdge 6120/6320 69
- Sun StorageTek FlexLine 380 69
- Sun StorageTek 2540 69
- Sun StorageTek V2X2 70
- EMC CLARiiON CX series 70
- EMC VNX series 70
- EMC Symmetrix series 71
- IBM V7000 series 71
- IBM SVC series 71
- IBM XIV series 72
- Fujitsu FibreCAT CX series 72
- SGI IS4600 series 73
- B Remote command devices 76
- Requirements 77
- Mapping a command device 78
- SANRISE9500V series 79
- Thunder 9500V series 79
- Mapping a command device 79 79
- Manager commands 80
- Storage window 81
- External Storage Systems tab 82
- External Paths tab 82
- External Path Groups tab 85
- • Summary (page 86) 86
- Mapped Volumes tab 87
- Add External Volumes wizard 89
- Add External Volumes window 90
- Selected External Volumes 93
- Edit Policies window 97
- Edit External Volumes wizard 99
- Confirm window 100
- Edit External WWNs wizard 103
- Edit External WWNs window 104
- Selected External Paths table 110
- Change Settings window 112
- Assign Processor Blade wizard 117
- LDEVs table 119
- Glossary 120
- 122 Index 122
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