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Hitachi G200 User Guide
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Hit
achi T
rueCopy
®
User Guide
Hit
achi Virtual S
torage Plat
form G200, G400, G600, G800
Hit
achi V
irtual S
torage Plat
form F400, F600, F800
MK-94HM8019-04
May 2016
2
Table of Contents
Default Chapter
1
Hitachi Truecopy
1
Table of Contents
3
Preface
9
Intended Audience
10
Product Version
10
Release Notes
10
Changes in this Revision
10
Referenced Documents
11
Document Conventions
11
Convention for Storage Capacity Values
13
Accessing Product Documentation
13
Getting Help
14
Comments
14
1 Truecopy Overview
15
Hitachi Truecopy
16
System Components
16
Storage Systems
18
Volume Pairs
18
Data Path
19
Consistency Groups
19
Interfaces
19
Failover Software
20
Overview of Initial, Update Copy Operations
20
Initial Copy
21
Update Copy
21
Pair Status
22
2 Requirements and Specifications
23
System Requirements and Specifications
24
3 Planning for Truecopy
29
Storage System Preparation
30
Cache, Additional Control Memory Requirements
30
Workflow for Adding and Removing Cache Memory
31
Workflow for Adding Control Memory
31
Workflow for Removing Control Memory
31
System Option Modes
32
System Performance Considerations
33
Determining Round Trip Time
33
Determining Minimum Number of Remote Paths
35
Analyzing Workload, Planning Data Paths
36
Planning Pairs and Pair Volumes
36
Pair Volume Requirements and Recommendations
37
Allowing I/O to the S-VOL
38
Allowing I/O to the P-VOL after a Split-Fence Level Options
38
Differential Data
39
Maximum Number of Pairs Supported
40
Calculating Maximum Number of Pairs
41
Priority for Initial Copy Operations and Scheduling Order
43
Example 1: more Initial Copies than Previously Specified
43
Example 2: Initial Copy Started, New Pairs Added
43
Consistency Group Planning
44
Consistency Group for Pairs in One Primary and One Secondary System
44
Consistency Group for Pairs in Multiple Primary and Secondary Systems
45
System Configurations for Consistency Groups
47
Registering Pairs to a New Consistency Group
47
Registering Pairs to an Existing Consistency Group
48
Consistency Group Requirements
48
Split Behaviors
49
Operation When a Split Command Is Issued During I/O Processing (for Truecopy)
50
Operation When an I/O Request Is Received While a Split Command Is in Progress
50
Host Access after Split
50
Pair Status before and after a Split Operation
51
Consistency Group 127
51
CTG 127 Behavior and Restrictions When a Pair Is Suspended
52
CTG 127 Behavior and Restrictions When the Data Path Fails
52
Host Failover Software
53
Data Path Requirements and Configurations
53
Ports
54
Bandwidth Requirements
54
Fibre Channel Data Path Requirements
54
Iscsi Data Path Requirements
55
Supported Data Path Configurations
57
Direct Connection
57
Switch Connection
58
Extender Connection
60
4 Sharing Truecopy Volumes
63
Volume Types that Can be Shared with Truecopy
64
Data Retention Utility
66
Dynamic Provisioning
67
LUN Manager
68
Performance Monitor
68
Universal Replicator
69
Shadowimage
69
Configurations with Shadowimage P-Vols
69
Configurations with Shadowimage S-Vols
72
Status Reporting and Data Currency
73
Virtual LUN
74
Volume Migration
74
Restrictions
74
Global Storage Virtualization
75
5 TC Configuration
77
Configuration Workflow
78
Adding Remote Connections
78
Changing Remote Replica Options
80
6 TC Pair Operations
85
Pair Operations Workflow
86
Checking Pair Status
86
Creating Pairs
87
Splitting Pairs
90
Resynchronizing Pairs
92
Deleting Pairs
94
7 Monitoring and Maintaining the TC System
97
Monitoring Pair Status, License Capacity
98
How Pair Status Changes
99
Pair Status Definitions
100
Split Types
101
System Behavior
102
Monitoring TC Pair Synchronization Rate
103
Monitoring TC Operations History
103
Operation Descriptions
104
Changing the Fence Level
105
Forcibly Deleting Pairs
106
Saving Pair Information to a Text File
107
Monitoring and Maintaining Remote Connections and Paths
107
Viewing Remote Connection Status and Path Information
108
Configuring Additional Remote Paths
110
Changing Minimum Paths, Round Trip Time, Other Remote Connection Options
111
Replacing a Data Path
113
Deleting Remote Paths
113
Deleting Truecopy Remote Connections
114
Managing Power-Off for Systems and Network Devices
115
General Information
116
Planned Outage of the Primary System
116
Planned Outage of the Secondary System or Remote Path
116
Planned Outage of both Primary and Secondary Systems
117
8 Data Migration
119
Migration Overview
120
Migrating Data
120
9 Disaster Recovery
123
Disaster Recovery Overview
124
Sense Information Shared between Sites
124
File and Database Recovery
124
Switching Operations to the Secondary Site
125
Checking S-VOL Consistency with the P-VOL
126
Transferring Operations Back to the Primary Site
127
10 Troubleshooting
129
Error Codes and Messages
130
General Troubleshooting
130
Remote Path Status Problems
131
Split Pair Problems
133
Troubleshooting Using CCI
134
SSB2 Error Codes When SSB1 = 2E31/B901/B90A/B90B/B912/D004
135
Error Code Description
136
SSB2=B992 Error Codes When SSB1 = B901 or B90A
144
SSB2 Error Codes When SSB1 = B90B
145
SSB2 Error Codes When SSB1 = B912
145
SSB2 Error Codes When SSB1 = B980
145
Service Information Messages (Sims)
145
Pinned Track Recovery
146
Calling Hitachi Data Systems Customer Support
146
A TC CLI Reference
147
Configuration Commands and Options
148
Consistency Group Commands and Options
148
Pair Operation Commands and Options
149
Monitoring Commands and Options
149
Maintenance Commands and Options
150
B TC GUI Reference
151
Replication Window
151
Remote Replication Window
151
Remote Connections Window
166
Add Remote Connection Wizard
170
Add Remote Connection Window
170
Add Remote Connection Confirmation Window
173
View Remote Connection Properties Window
174
Remove Remote Connections Window
176
Edit Remote Connection Options Wizard
177
Edit Remote Connection Options Window
177
Edit Remote Connection Options Confirmation Window
178
Add Remote Paths Wizard
179
Add Remote Paths Window
179
Add Remote Paths Confirmation Window
182
Remove Remote Paths Wizard
183
Remove Remote Paths Window
183
Remove Remote Paths Confirmation Window
186
Edit Remote Replica Options Wizard
187
Edit Remote Replica Options Window
187
Change CU Options Window
190
Edit Remote Replica Options Confirmation Window
191
Create Pairs Wizard
192
Create TC Pairs Window
192
Change Settings Window
199
Create TC Pairs Confirmation Window
201
Split Pairs Wizard
203
Split Pairs Window
203
Split Pairs Confirmation Window
206
Resync Pairs Wizard
207
Resync Pairs Window
207
Resync Pairs Confirmation Window
210
Delete Pairs Wizard
211
Delete Pairs Window
211
Delete Pairs Confirmation Window
214
Force Delete Pairs (TC Pairs) Window
215
Edit Pair Options Wizard
216
Edit Pair Options Window
216
Edit Pair Options Confirmation Window
217
View Pair Properties Window
217
View Pair Synchronization Rate Window
220
History Window
222
Glossary
225
Audit Log
226
Cascade Configuration
227
Command Device
228
Configuration Definition File
228
Data Consistency
230
External Volume
232
Host Failover
233
Journal Volume
235
Port Mode
239
Preview List
239
Quorum Disk
240
Raid Group
241
Raid Level
241
Remote Site
241
Severity Level
243
Index
247
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Technical Reference
55 pages
Hardware Reference Guide
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Quick Start
4 pages
Reference Guide
132 pages
4
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Hitachi G200 Specifications
General
Model
G200
Category
Storage
Data Reduction
Compression and Deduplication
Operating System Compatibility
VMware, Microsoft, Linux
Form Factor
Rack-mountable
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