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VSP G1500
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Hitachi VSP G1500 - User Guide Manual
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Hitachi Thin Image
User Guide
Hitachi Virtual Storage Platform G1000 and G1500
Hitachi Virtual Storage Platform F1500
Hitachi Virtual Storage Platform G200, G400, G600, G800
Hitachi Virtual Storage Platform F400, F600, F800
MK-92RD801
1-12
June 2017
2
Table of Contents
Main Page
Default Chapter
3
Table of Contents
3
Preface
9
Intended Audience
10
Product Version
10
Release Notes
10
Changes in this Revision
10
Related Documents
10
Document Conventions
11
Conventions for Storage Capacity Values
13
Accessing Product Documentation
14
Getting Help
14
Comments
14
1 Overview of Thin Image
15
About Thin Image
16
Workflow for Storing Thin Image Snapshot Data
17
Components of Thin Image
18
Thin Image Pairs
18
Volume Components
19
Snapshot Tree Components
20
Consistency and Snapshot Groups
20
Snapshot Clones
21
Snapshot Trees and Cascaded Pairs
22
Creating Cascaded Pairs
22
VSP Family Software Applications for Thin Image
25
How Thin Image Works
26
How Thin Image Uses Pools and Pool Volumes
26
Usage Level Rebalancing Among Parity Groups
27
How Thin Image Uses V-Vols
28
How Thin Image Pairs Are Created
29
Using Snapshot Pairs (Not Cascaded)
29
Using Cascaded Pairs
30
Workflow for Creating Groups and Storing Snapshot Data Using CCI
33
Methods of Storing Snapshot Data
35
Thin Image Pair Restoration
37
How Thin Image Pair Status Changes
37
Thin Image Host Access and Pair Status
39
Workflow for Thin Image Pair Status Changes
40
Copy Threshold Option and Host Server I/O Performance for Thin Image
41
Sharing Thin Image Volumes with Other Software Applications
42
Sharing Thin Image Volumes that Have Data Retention Utility Access Attributes
44
Sharing Thin Image Volumes with Hitachi Volume Migration
47
Sharing Thin Image Volumes with Shadowimage
47
Sharing Thin Image Volumes with Truecopy and Universal Replicator
49
Volume Backup with Thin Image, Truecopy, and Universal Replicator in a 3DC Multitarget Configuration Workflow
51
Volume Backup with Thin Image and Universal Replicator in a 3DC Multitarget Configuration Workflow (VSP G1000, G1500, and VSP F1500)
52
Volume Backup with Thin Image and Universal Replicator in a 3DC Cascade Configuration Workflow (VSP G1000, G1500, and VSP F1500)
52
Sharing Thin Image Volumes with Global-Active Device
53
Storage System Configuration with Thin Image and GAD
54
Consistency Group Configuration with Thin Image and GAD
58
Snapshot Group Configuration with Thin Image and GAD
60
Sharing Thin Image Volumes with Dynamic Provisioning and Dynamic Provisioning for Mainframe in a Single Storage System
62
Sharing Thin Image Volumes with Resource Partition Manager
63
System Option Modes for Thin Image
63
Storage System
64
Acronyms and Abbreviations for VSP Family Storage System Software Applications Used in this Guide
66
2 Thin Image System and Planning Requirements
67
Thin Image System Requirements
68
Installing Thin Image
68
Uninstalling Thin Image
68
Thin Image Licensed Capacity Requirements
68
Thin Image Shared Memory Requirements
69
Thin Image Volume Requirements
70
Thin Image Data Pool Requirements
73
Thin Image Consistency Group Requirements
74
Thin Image Snapshot Group Requirements
75
Thin Image Planning Requirements
76
Calculating the Number of Thin Image Pairs Based on Pair Tables
76
Calculating Thin Image Pairs Based on the Snapshot Estimated Manageable Capacity
76
Calculating Thin Image Pairs Based on Cache Management Devices
77
Calculating the Number of Cache Management Devices
77
Calculating the Thin Image Pair Capacity for DP Pools
78
Thin Image Cache Management Device Requirements
80
Calculating and Assigning Pool Capacity
80
Resolving Insufficient Pool Capacity
81
Pool Capacity Calculations
82
Creating a Backup of Data
82
Universal Volume Manager and External Volumes Used as Pool-Vols
82
Simultaneous Processing of Multiple Thin Image Pair Tasks
83
Pair Operations When Pairs Are Cascaded
83
Pair Operations When Pairs Are Not Cascaded
94
Pair Operations When a P-VOL Is Shared by Multiple S-Vols
95
Differences between Thin Image and Shadowimage
96
3 Configuring Thin Image
99
Prerequisites for Configuring Thin Image
100
Workflow for Configuring Thin Image
100
Workflow for Creating and Managing Thin Image Pairs
101
Creating Thin Image Data Pools
101
Selecting Pool Volumes
104
Pool Creation and Data Drive Type Priority
106
Workflow for Registering Virtual Volumes
107
Editing the SSID for Virtual Volumes (VSP G1000, G1500, and VSP F1500)
107
Changing V-VOL Settings
110
Creating V-Vols for Thin Image S-Vols
113
Removing Ldevs from Registering Tasks
117
Recognizing Devices from the Host Server
119
Host Server Stoppages and Device Recognition Issues
120
Overview of Using CCI to Run Commands through In-Band Connections
120
Changing System Options that Affect Thin Image Performance
121
4 Managing Thin Image Pairs
125
Thin Image Pair Tasks
127
Checking Thin Image Pair Status
127
Reloading Thin Image Configuration Information
128
Workflow for Creating and Managing Thin Image Pairs
128
Workflow for Creating Thin Image Pairs Using Device Manager - Storage Navigator
129
Creating Thin Image Pairs Using Device Manager - Storage Navigator
130
Selecting a Pool as Your Primary Volume
133
Example of Creating Complex Thin Image Pairs
133
Creating Thin Image Pairs and Defining Them in Snapshot or Consistency Groups Using CCI
134
Workflow for Defining Thin Image Pairs and Defining Them in Snapshot or Consistency Groups Using Device Manager - Storage Navigator
135
Storing Snapshot Data or Cloning Pairs
135
Splitting Thin Image Pairs to Store Snapshot Data
136
Splitting Thin Image Pairs to Store Snapshot Data Using CCI
137
Workflow for Storing Snapshot Data or Clone Pairs in Consistency Groups
137
Using Consistency Group Pair-Split with Shared Volumes
138
Restoring Thin Image Pairs
141
Failure During Thin Image Pair Restore
142
Restoring Suspended Thin Image Pairs
143
Thin Image Pair Resynchronization
143
Pair Resynchronization Methods
143
Resynchronizing Thin Image Pairs
144
Assigning MU Numbers to Deleted Snapshot Data
145
Deleting Snapshot Data
145
Deleting Thin Image Pairs
146
Accelerating the Thin Image Pair Deletion Process
148
Removing Thin Image Snapshot Groups
148
Assigning Secondary Volumes to Thin Image Pair Snapshot Data
148
Assigning Secondary Volumes to Snapshot Data after Creating New Thin Image Pairs
149
Assigning Secondary Volumes to Snapshot Data of Existing Thin Image Pairs
151
Releasing Assignment of Secondary Volumes from Thin Image Pair Snapshot Data
152
Changing Assignment of Secondary Volumes to Thin Image Pair Snapshot Data
153
5 Monitoring and Maintaining Thin Image
155
Monitoring Pair Information
156
Viewing Summary Replication Information
156
Viewing Local Replication Summary Information
157
Viewing the Number of Pairs
158
Viewing the List of Primary Volumes
159
Viewing Pair Properties
160
Thin Image Pair Status Definitions
160
Viewing Pair Synchronization Rates
161
Monitoring Consistency Groups
163
Viewing the Number of Consistency Groups
163
Viewing the List of Consistency Groups
164
Viewing Consistency Group Properties
165
Viewing Thin Image Pair Task History
167
Thin Image Task Code Definitions
168
Viewing Licensed Capacities
169
Viewing the Number of Cache Management Devices
170
Managing Pools
170
Monitoring Pool Information
170
Viewing Used Pool Capacity (VSP G1000, G1500, and VSP F1500)
172
Viewing Used Capacity by Pool
172
Viewing Used Capacity of the Physical Capacity by Pool
172
Viewing Used Pool Capacity by Thin Image Pair's Root Volume
172
Viewing Formatted Pool Capacity and Pool Usage Rates
173
Increasing Pool Capacity
173
Failure of Available Pool Capacity Formatting and Pool Capacity Increase
177
Decreasing Pool Capacity
177
Stopping the Process of Decreasing Pool Capacity
179
Editing the Data Pool Warning Threshold
181
Editing Pool Names
183
Workflow for Recovering Blocked Pools
185
Recovering Blocked Pools
186
Workflow for Deleting Pools
187
Deleting Pools
187
Managing Virtual Volumes
188
Editing Virtual Volume Names
188
Workflow for Deleting V-Vols Specified for Thin Image S-Vols
191
Deleting Virtual Volumes
191
Viewing Snapshot Data Capacity (VSP G1000, G1500, and VSP F1500)
192
Maintaining Pairs During Storage System Maintenance
193
Switching off the Power Supply
193
Power Supply and Existing Shared Memory
194
Power Supply and Losing Data in Shared Memory
194
Replacing the Microcode (or Firmware) Offline
194
Definition of Failure
195
6 Troubleshooting Thin Image
197
Troubleshooting Pools, Pairs, and Volumes Related to Thin Image
198
Workflow for Correcting Pool-Related Failures (SIM = 601Xxx, 602Xxx, 604Xxx, 605Xxx, and 606Xxx)
200
Workflow to Perform When Sims Related to the Pool Usage Rate Were Reported
201
Workflow to Perform When Sims Related to the Capacity Ensured for Writing Were Reported
204
Workflow for Fixing Errors When Sims Related to Cache Management Devices Are Reported
206
Calculating the Number of Remaining Cache Management Devices
207
Workflow for Fixing Errors When Pool-Related Sims Are Reported
207
Completing Sims (VSP G1000, G1500, and VSP F1500)
209
Automatic Completion of Sims
209
Manually Completing Sims
209
Contacting Customer Support
210
A CCI Command Reference for Thin Image
211
Pair Tasks Using CCI or Device Manager - Storage Navigator
212
CCI Pair Command Results
213
Troubleshooting with Command Control Interface
213
Command Control Interface SSB2 Codes
214
Notes on Using Thin Image Primary Volumes as Truecopy, Shadowimage, or Universal Replicator Pair Volumes
222
Notes on Storing Snapshot Data, and on Cloning Pairs
223
B Thin Image GUI Windows and Wizards
225
Replication Window
226
Local Replication Window
228
View Pair Synchronization Rate Window
239
View Pair Properties Window
242
History Window
247
Consistency Group Properties Window
248
Create TI Pairs Wizard
251
Create TI Pairs Window
251
Assign Secondary Volumes Window
258
Create TI Pairs Confirmation Window
263
Select Pool Window
267
Split Pairs Wizard
269
Split Pairs Window
269
Split Pairs Confirmation Window
271
Resync Pairs Wizard
273
Resync Pairs Window
273
Resync Pairs Confirmation Window
275
Delete Pairs Window
277
Edit Local Replica Options Wizard
279
Edit Local Replica Options Window
279
Edit Local Replica Options Confirmation Window
283
TI Pairs Window
285
Assign Secondary Volumes Wizard
288
Assign Secondary Volumes Window
289
Assign Secondary Volumes Confirmation Window
293
Remove Secondary Volumes Window
296
Glossary
299
Cascade Configuration
300
Command Device
301
Configuration Definition File
301
Data Consistency
302
Disaster Recovery
302
External Volume
304
Host Failover
305
Initial Copy
305
Journal Volume
306
Local Copy
307
Pair Status
310
Quorum Disk
312
Raid Group
312
Raid Level
312
Remote Site
313
Severity Level
315
Index
321
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