Hp XP P9500 Storage User Manual Page 8
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Components of volumes
FS manages logical volumes of P-VOLs and V-VOLs of S-VOLs as FS pairs. Logical volumes of
P-VOLs include V-VOLs that have a provisioning type is Thin Provisioning. You can only use V-VOLs
that are used by an FS pair as an S-VOL. The differential data of P-VOLs are stored as snapshot
data in pool volumes.
To use FS, include at least one of the following volumes:
• P-VOL
• Secondary volume (V-VOL)
• FS pool-VOL, as a container for snapshot data
NOTE: FS, THP, and the other P9500 software applications require license agreements with HP.
Consistency groups
If you use the RAID Manager, you can define multiple FS pairs as a consistency group. If you
define the consistency group in advance, you can store snapshot data per consistency group.
Therefore, data of the time when the P9500 storage system receives the request of storing data
are assured.
For more information about storing snapshot data for a consistency group, see “Storing snapshot
data for a group workflow” (page 10).
Snapshot groups
When you define new pairs using FS, and you want to perform the FS task per group, add pairs
to a consistency group or a snapshot group.
The following table shows the difference between consistency groups and snapshot groups.
Snapshot groupConsistency groupItem
8,1928,192Pair limit per group
512256Group limit
Not guaranteedGuaranteedData consistency
For more information about storing snapshot data for a group, see “Storing snapshot data for a
group workflow” (page 10).
Fast Snap
You use FS on the Remote Web Console (RWC) computer that is connected to the service processor
(SVP) by means of the TCP/IP local area network (LAN). When you log in to the SVP from your
RWC computer, FS for RWC is downloaded. You can use FS for RWC to configure or view statistics
on your storage system and perform tasks on FS pairs.
Thin Provisioning
To perform FS tasks, you must install THP on the RWC computer. An THP license is required. Reserve
enough license capacity to accommodate the pairs or pools that you plan to create.
Calculate the licensed capacity for THP based on the capacity of pool-VOLs for FS and THP. These
volumes are referred to as used volumes. The licensed capacity must exceed the total capacity of
used volumes.
8 Overview of Fast Snap
- Abstract 1
- DescriptionDateEdition 2
- Contents 3
- 4 Contents 4
- Contents 5 5
- 1 Overview of Fast Snap 6
- Components of Fast Snap 7
- Components of volumes 8
- Consistency groups 8
- Snapshot groups 8
- Fast Snap 8
- How Fast Snap works 9
- Fast Snap pairs 10
- How Fast Snap works 11 11
- Snapshot data storage methods 12
- CAW storage method workflow 13
- COW storage method workflow 13
- Pair status 14
- Pair status 15 15
- Copy threshold option 16
- Data Retention 18
- Auto LUN 19
- Business Copy 19
- BC P-VOL 20
- Thin Provisioning 24
- Resource Partition 25
- 2 Planning and design 26
- Removing shared memory 27
- Fast Snap volume requirements 27
- Notes on consistency groups 30
- 104,768Extension 1 31
- 209,600Extension 2 31
- 32 Planning and design 32
- Calculating pool capacity 33
- 34 Planning and design 34
- Configuration tasks workflow 35
- Pool volumes with system area 35
- Creating Fast Snap data pools 36
- Creating V-VOLs 37
- Related topics 39
- Editing the V-VOL SSID 39
- Changing the V-VOL settings 40
- 4 Pair tasks 41
- Configuring a complex pair 43
- Splitting pairs 44
- 46 Pair tasks 46
- Restoring pairs 48
- Deleting snapshot data 49
- Deleting FS pairs 49
- 5 Monitoring and maintenance 51
- Monitoring synchronous rates 52
- Monitoring consistency groups 53
- Monitoring licensed capacity 57
- Managing pools and V-VOLs 57
- Increasing pool capacity 58
- Changing pool threshold 59
- Changing pool names 59
- Recovering pools 60
- Deleting pools 61
- Changing V-VOL names 61
- Maintenance requirements 62
- Maintenance requirements 63 63
- 6 Troubleshooting 64
- Completing SIMs 67
- 68 Troubleshooting 68
- 7 Support and other resources 69
- Typographic conventions 70
- Typographic conventions 71 71
- Support 74
- B9AD, B9AE) 74
- B Fast Snap GUI reference 80
- Local Replications window 81
- Summary tab 82
- Pairs tab 83
- Reserve Volumes tab 85
- Consistency Groups tab 86
- View Pair Properties window 87
- Pairs table 88
- View Histories window 90
- Create Pair wizard 93
- Create Pair window 94
- Select Primary Volumes window 95
- Selected LDEVs table 96
- Select Pool window 97
- Available Pools table 98
- Available LDEVs table 99
- Confirm window 101
- Split Pairs wizard 102
- Resync Pairs wizard 105
- Resync pairs window 106
- Delete Pairs window 109
- Selected Pairs table 110
- BC/FS/SS System Options table 111
- System Type: Mainframe 111
- Glossary 114
- 116 index 116
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