Fujitsu ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Design Manual

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

Design Guide (Basic)

P3AM-7722-25ENZ0

System configuration design

1. Function Overview 14

2. Basic Functions 16

RAID Functions.............................................................................................................................. 16

Supported RAID

User Capacity (Logical Capacity)............................................................................................................................22

RAID Group............................................................................................................................................................24

Volume..................................................................................................................................................................26

Hot Spares.............................................................................................................................................................28

.....................................................................................................................................................16

Data Protection............................................................................................................................. 31

Data Block Guard ..................................................................................................................................................31

Disk Drive Patrol....................................................................................................................................................33

Redundant Copy....................................................................................................................................................34

Rebuild..................................................................................................................................................................35

Fast Recovery ........................................................................................................................................................36

Copyback/Copybackless.........................................................................................................................................37

Protection (Shield)................................................................................................................................................39

Reverse Cabling.....................................................................................................................................................41

Operations Optimization (Virtualization/Automated Storage Tiering)........................................... 42

Thin Provisioning ..................................................................................................................................................42

Flexible Tier ..........................................................................................................................................................49

Extreme Cache ......................................................................................................................................................55

Extreme Cache Pool ..............................................................................................................................................56

Optimization of Volume Configurations ........................................................................................ 57

RAID Migration......................................................................................................................................................59

Logical Device Expansion......................................................................................................................................61

LUN Concatenation ...............................................................................................................................................62

Wide Striping ........................................................................................................................................................65

Data Encryption ............................................................................................................................ 66

Encryption with Self Encrypting Drive (SED)..........................................................................................................67

Firmware Data Encryption.....................................................................................................................................68

Key Management Server Linkage..........................................................................................................................69

User Access Management ............................................................................................................. 72

Account Management...........................................................................................................................................72

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

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Table of Contents

User Authentication ..............................................................................................................................................74

Audit Log

..............................................................................................................................................................76

Environmental Burden Reduction ................................................................................................. 77

Eco-mode..............................................................................................................................................................77

Power Consumption Visualization .........................................................................................................................80

Operation Management/Device Monitoring.................................................................................. 81

Operation Management Interface.........................................................................................................................81

Performance Information Management................................................................................................................82

Event Notification .................................................................................................................................................84

Device Time Synchronization.................................................................................................................................87

Power Control ............................................................................................................................... 88

Power Synchronized Unit.......................................................................................................................................88

Remote Power Operation (Wake On LAN) .............................................................................................................89

Backup (Advanced Copy) .............................................................................................................. 90

Backup (SAN)........................................................................................................................................................91

Performance Tuning.................................................................................................................... 104

Striping Size Expansion.......................................................................................................................................104

Assigned CMs ......................................................................................................................................................105

Smart Setup Wizard..................................................................................................................... 106

3. SAN Functions 112

Operations Optimization (Deduplication/Compression).............................................................. 112

Deduplication/Compression

Improving Host Connectivity ....................................................................................................... 120

Host Affinity ........................................................................................................................................................120

iSCSI Security.......................................................................................................................................................122

Stable Operation via Load Control............................................................................................... 122

Quality of Service (QoS).......................................................................................................................................122

Host Response ....................................................................................................................................................124

Storage Cluster....................................................................................................................................................125

Data Migration............................................................................................................................ 128

................................................................................................................................112

Storage Migration ...............................................................................................................................................128

Non-disruptive Storage Migration............................................................................................... 130

Server Linkage Functions ............................................................................................................ 132

Oracle VM Linkage ..............................................................................................................................................132

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

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Table of Contents

VMware Linkage..................................................................................................................................................133

Veeam Storage Integration

Microsoft Linkage................................................................................................................................................141

OpenStack Linkage .............................................................................................................................................142

Logical Volume Manager (LVM) ..........................................................................................................................143

.................................................................................................................................138

4. Connection Configuration 144

SAN Connection .......................................................................................................................... 144

Host Interface

Access Method ....................................................................................................................................................146

Remote Connections ................................................................................................................... 149

Remote Interfaces...............................................................................................................................................150

Connectable Models............................................................................................................................................152

LAN Connection .......................................................................................................................... 153

LAN for Operation Management (MNT Port) .......................................................................................................153

LAN for Remote Support (RMT Port)....................................................................................................................155

LAN Control (Master CM/Slave CM)......................................................................................................................158

.....................................................................................................................................................144

Network Communication Protocols .....................................................................................................................160

Power Supply Connection............................................................................................................ 162

Input Power Supply Lines ....................................................................................................................................162

UPS Connection...................................................................................................................................................162

Power Synchronized Connections................................................................................................ 163

Power Synchronized Connections (PWC) .............................................................................................................163

Power Synchronized Connections (Wake On LAN) ...............................................................................................166

5. Hardware Configurations 167

Configuration Schematics ........................................................................................................... 167

Optional Product Installation Conditions

Cache Memory ....................................................................................................................................................175

Memory Extension ..............................................................................................................................................177

Extreme Cache ....................................................................................................................................................178

Host Interfaces....................................................................................................................................................179

Unified License....................................................................................................................................................180

..................................................................................... 174

Drive Enclosures..................................................................................................................................................181

Drives..................................................................................................................................................................182

Standard Installation Rules......................................................................................................... 185

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

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Table of Contents

Cache Memory ....................................................................................................................................................185

Extreme Cache

Host Interface .....................................................................................................................................................187

Drive Enclosure ...................................................................................................................................................188

Rack Installation Diagram...................................................................................................................................189

Drive ...................................................................................................................................................................195

....................................................................................................................................................187

Recommended RAID Group Configuration................................................................................... 200

6. Maintenance/Expansion 208

Hot Swap/Hot Expansion ............................................................................................................ 208

SSD Sanitization

.......................................................................................................................... 209

A. Function Specification List 210

List of Supported Protocols.......................................................................................................... 210

Target Pool for Each Function/Volume List

Target RAID Groups/Pools of Each Function.........................................................................................................211

.................................................................................. 210

Target Volumes of Each Function ........................................................................................................................212

Combinations of Functions That Are Available for Simultaneous Executions............................... 214

Combinations of Functions That Are Available for Simultaneous Executions.......................................................214

Number of Processes That Can Be Executed Simultaneously...............................................................................216

Capacity That Can Be Processed Simultaneously .................................................................................................216

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

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List of Figures

Figure 1 RAID0 Concept..........................................................................................................................................17

Figure 2

Figure 3 RAID1+0 Concept......................................................................................................................................18

Figure 4 RAID5 Concept..........................................................................................................................................18

Figure 5 RAID5+0 Concept......................................................................................................................................19

Figure 6 RAID6 Concept..........................................................................................................................................20

Figure 7 RAID6-FR Concept.....................................................................................................................................21

Figure 8 Example of a RAID Group .........................................................................................................................25

Figure 9 Volume Concept .......................................................................................................................................26

Figure 10 Hot Spares................................................................................................................................................28

Figure 11 Hot Spare Selection Criteria......................................................................................................................30

Figure 12 Data Block Guard......................................................................................................................................31

Figure 13 Disk Drive Patrol.......................................................................................................................................33

Figure 14 Redundant Copy Function ........................................................................................................................34

Figure 15 Rebuild.....................................................................................................................................................35

Figure 16 Fast Recovery ...........................................................................................................................................36

Figure 17 Copyback..................................................................................................................................................37

Figure 18 Copybackless............................................................................................................................................38

Figure 19 Protection (Shield) ...................................................................................................................................39

Figure 20 Reverse Cabling........................................................................................................................................41

Figure 21 Storage Capacity Virtualization.................................................................................................................43

Figure 22 TPV Balancing (When Allocating Disproportionate TPV Physical Capacity Evenly) ....................................46

Figure 23 TPV Balancing (When Distributing Host Accesses Evenly after TPP Expansion) ........................................46

Figure 24 TPV/FTV Capacity Optimization .................................................................................................................48

Figure 25 Flexible Tier..............................................................................................................................................50

Figure 26 FTV Configuration.....................................................................................................................................51

Figure 27 FTRP Balancing.........................................................................................................................................54

Figure 28 Extreme Cache .........................................................................................................................................55

Figure 29 Extreme Cache Pool..................................................................................................................................56

Figure 30 RAID Migration (When Data Is Migrated to a High Capacity Drive)...........................................................59

Figure 31 RAID Migration (When a Volume Is Moved to a Different RAID Level) ......................................................59

Figure 32 RAID Migration.........................................................................................................................................60

Figure 33 Logical Device Expansion (When Expanding the RAID Group Capacity)....................................................61

Figure 34 Logical Device Expansion (When Changing the RAID Level).....................................................................61

Figure 35 LUN Concatenation ..................................................................................................................................62

Figure 36 LUN Concatenation (When the Concatenation Source Is a New Volume)..................................................63

Figure 37 LUN Concatenation (When the Existing Volume Capacity Is Expanded) ...................................................63

Figure 38 Wide Striping............................................................................................................................................65

Figure 39 Data Encryption with Self Encrypting Drives (SED) ...................................................................................67

Figure 40 Firmware Data Encryption........................................................................................................................68

Figure 41 Key Management Server Linkage.............................................................................................................70

Figure 42 Account Management ..............................................................................................................................72

Figure 43 Audit Log..................................................................................................................................................76

Figure 44 Eco-mode.................................................................................................................................................77

Figure 45 Power Consumption Visualization ............................................................................................................80

Figure 46 Event Notification ....................................................................................................................................84

Figure 47 Device Time Synchronization....................................................................................................................87

RAID1 Concept..........................................................................................................................................17

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

Design Guide (Basic)

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List of Figures

Figure 48 Power Synchronized Unit..........................................................................................................................88

Figure 49

Wake On LAN ...........................................................................................................................................89

Figure 50 Example of Advanced Copy ......................................................................................................................90

Figure 51 REC...........................................................................................................................................................93

Figure 52 Restore OPC..............................................................................................................................................96

Figure 53 EC or REC Reverse .....................................................................................................................................96

Figure 54 Targets for the Multi-Copy Function .........................................................................................................97

Figure 55 Multi-Copy................................................................................................................................................97

Figure 56 Multi-Copy (Including SnapOPC+) ............................................................................................................98

Figure 57 Multi-Copy (Using the Consistency Mode)................................................................................................98

Figure 58 Multi-Copy (Case 1: When Performing a Cascade Copy for an REC Session in Consistency Mode) .............99

Figure 59 Multi-Copy (Case 2: When Performing a Cascade Copy for an REC Session in Consistency Mode) .............99

Figure 60 Cascade Copy..........................................................................................................................................100

Figure 61 Cascade Copy (Using Three Copy Sessions).............................................................................................103

Figure 62 Cascade Copy (Using Four Copy Sessions)...............................................................................................103

Figure 63 Assigned CMs .........................................................................................................................................105

Figure 64 RAID Configuration Example (When 12 SSDs Are Installed) ...................................................................109

Figure 65 RAID Configuration Example (When 15 SAS Disks Are Installed) ............................................................111

Figure 66 Deduplication/Compression Overview ....................................................................................................112

Figure 67 Deduplication Overview .........................................................................................................................113

Figure 68 Compression Overview ...........................................................................................................................113

Figure 69 Details of the Deduplication/Compression Function ...............................................................................118

Figure 70 Host Affinity ...........................................................................................................................................120

Figure 71 Associating Host Groups, CA Port Groups, and LUN Groups.....................................................................121

Figure 72 QoS.........................................................................................................................................................122

Figure 73 Copy Path Bandwidth Limit....................................................................................................................123

Figure 74 Host Response........................................................................................................................................124

Figure 75 Storage Cluster .......................................................................................................................................125

Figure 76 Mapping TFOVs, TFO Groups, and CA Port Pairs ......................................................................................126

Figure 77 Storage Migration ..................................................................................................................................128

Figure 78 Non-disruptive Storage Migration ..........................................................................................................130

Figure 79 Oracle VM Linkage .................................................................................................................................132

Figure 80 VMware Linkage.....................................................................................................................................133

Figure 81 VVOL (Operational Configuration)..........................................................................................................135

Figure 82 VVOL (System Configuration) .................................................................................................................136

Figure 83 Veeam Storage Integration ....................................................................................................................138

Figure 84 Microsoft Linkage...................................................................................................................................141

Figure 85 Logical Volume Manager (LVM) .............................................................................................................143

Figure 86 Single Path Connection (When a SAN Connection Is Used — Direct Connection) .....................................146

Figure 87 Single Path Connection (When a SAN Connection Is Used — Switch Connection) ....................................146

Figure 88 Multipath Connection (When a SAN Connection Is Used — Basic Connection Configuration)...................147

Figure 89 Multipath Connection (When a SAN Connection Is Used — Switch Connection).......................................147

Figure 90 Multipath Connection (When a SAN Connection Is Used — for Enhanced Performance)..........................148

Figure 91 Example of Non-Supported Connection Configuration (When Multiple Types of Remote Interfaces Are In-

stalled in the Same ETERNUS DX/AF)......................................................................................................149

Figure 92 Example of Supported Connection Configuration (When Multiple Types of Remote Interfaces Are Installed

in the Same ETERNUS DX/AF) .................................................................................................................149

Figure 93 An FC Connection for a Remote Copy between ETERNUS DX/AF Storage Systems (When Redundant Paths

Are Used) ...............................................................................................................................................150

Figure 94 An FC Connection for a Remote Copy between ETERNUS DX/AF Storage Systems (When Lines Are Used).....

...............................................................................................................................................................150

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Design Guide (Basic)

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List of Figures

Figure 95 An iSCSI Connection for a Remote Copy between ETERNUS DX/AF Storage Systems (When Lines Are Used).

...............................................................................................................................................................

151

Figure 96 Connection Example without a Dedicated Remote Support Port ............................................................154

Figure 97 Connection Example When the IP Address of the Slave CM Is Set (and a Dedicated Remote Support Port Is

Not Used)...............................................................................................................................................154

Figure 98 Overview of the AIS Connect Function ....................................................................................................155

Figure 99 Security Features....................................................................................................................................156

Figure 100 Connection Example with a Dedicated Remote Support Port..................................................................157

Figure 101 Connection Example When the IP Address of the Slave CM Is Set (and a Dedicated Remote Support Port Is

Used) .....................................................................................................................................................158

Figure 102 LAN Control (Switching of the Master CM)..............................................................................................159

Figure 103 LAN Control (When the IP Address of the Slave CM Is Set)......................................................................159

Figure 104 Power Supply Control Using a Power Synchronized Unit (When Connecting One or Two Servers)...........163

Figure 105 Power Supply Control Using a Power Synchronized Unit (When Connecting Three or More Servers).......165

Figure 106 Power Supply Control Using Wake On LAN .............................................................................................166

Figure 107 Minimum Configuration Diagram...........................................................................................................167

Figure 108 ETERNUS DX500 S4/DX500 S3 Maximum Configuration Diagram ...........................................................168

Figure 109 ETERNUS DX600 S4/DX600 S3 Maximum Configuration Diagram ...........................................................170

Figure 110 Enclosure Connection Paths (ETERNUS DX500 S4/DX500 S3) .................................................................172

Figure 111 Enclosure Connection Paths (ETERNUS DX600 S4/DX600 S3) .................................................................173

Figure 112 Cache Memory Installation Diagram (ETERNUS DX500 S4/DX500 S3).....................................................185

Figure 113 Cache Memory Installation Diagram (ETERNUS DX600 S4/DX600 S3).....................................................186

Figure 114 Extreme Cache Module Installation Diagram .........................................................................................187

Figure 115 Host Interface Installation Diagram (ETERNUS DX500 S4/DX500 S3)......................................................188

Figure 116 Host Interface Installation Diagram (ETERNUS DX600 S4/DX600 S3)......................................................188

Figure 117 Rack Installation Example (ETERNUS DX500 S4/DX500 S3 2U DE)..........................................................189

Figure 118 Rack Installation Example (ETERNUS DX500 S4/DX500 S3 4U DE)..........................................................190

Figure 119 Rack Installation Example (ETERNUS DX500 S4/DX500 S3 2U/4U DE) ....................................................191

Figure 120 Rack Installation Example (ETERNUS DX600 S4/DX600 S3 2U DE)..........................................................192

Figure 121 Rack Installation Example (ETERNUS DX600 S4/DX600 S3 4U DE)..........................................................193

Figure 122 Rack Installation Example (ETERNUS DX600 S4/DX600 S3 2U/4U DE) ....................................................194

Figure 123 Drive Installation Diagram for High-Density Drive Enclosures ................................................................196

Figure 124 Installation Diagram for 2.5" Drives .......................................................................................................198

Figure 125 Installation Diagram for 3.5" Drives .......................................................................................................199

Figure 126 Drive Combination 1 ..............................................................................................................................200

Figure 127 Drive Combination 2 ..............................................................................................................................201

Figure 128 Drive Combination 3 ..............................................................................................................................201

Figure 129 Drive Combination 4 ..............................................................................................................................202

Figure 130 Drive Combination 5 ..............................................................................................................................202

Figure 131 Recommended RAID1/RAID1+0 Configuration Example (ETERNUS DX500 S4/DX500 S3) .......................203

Figure 132 Recommended RAID5/RAID5+0/RAID6 Configuration Example (ETERNUS DX500 S4/DX500 S3).............203

Figure 133 Recommended RAID6-FR Configuration Example (ETERNUS DX500 S4/DX500 S3).................................204

Figure 134 Recommended RAID1/RAID1+0 Configuration Example (ETERNUS DX600 S4/DX600 S3) .......................205

Figure 135 Recommended RAID5/RAID5+0/RAID6 Configuration Example (ETERNUS DX600 S4/DX600 S3).............206

Figure 136 Recommended RAID6-FR Configuration Example (ETERNUS DX600 S4/DX600 S3).................................207

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List of Tables

Table 1 Basic Functions ........................................................................................................................................14

Table 2

Table 3 RAID Level Comparison ............................................................................................................................21

Table 4 Formula for Calculating User Capacity for Each RAID Level .......................................................................22

Table 5 User Capacity per Drive.............................................................................................................................23

Table 6 RAID Group Types and Usage....................................................................................................................24

Table 7 Recommended Number of Drives per RAID Group ....................................................................................25

Table 8 Volumes That Can Be Created...................................................................................................................27

Table 9 Hot Spare Installation Conditions.............................................................................................................29

Table 10 Hot Spare Selection Criteria (Condition 1) ................................................................................................30

Table 11 Hot Spare Selection Criteria (Condition 2) ................................................................................................30

Table 12 TPP Maximum Number and Capacity........................................................................................................43

Table 13 Chunk Size According to the Configured TPP Capacity...............................................................................44

Table 14 Levels and Configurations for a RAID Group That Can Be Registered in a TPP...........................................44

Table 15 TPP Thresholds .........................................................................................................................................45

Table 16 TPV Thresholds .........................................................................................................................................45

Table 17 Chunk Size and Data Transfer Unit ..........................................................................................................49

Table 18 The Maximum Number and the Maximum Capacity of FTSPs...................................................................51

Table 19 Levels and Configurations for a RAID Group That Can Be Registered in a FTSP .........................................52

Table 20 FTRP Thresholds .......................................................................................................................................53

Table 21 FTV Thresholds .........................................................................................................................................53

Table 22 Optimization of Volume Configurations....................................................................................................57

Table 23 Functional Comparison between the SED Authentication Key (Common Key) and Key Management Server

Table 24 Available Functions for Default Roles .......................................................................................................73

Table 25 Client Public Key (SSH Authentication).....................................................................................................74

Table 26 Eco-mode Specifications...........................................................................................................................78

Table 27 ETERNUS Web GUI Operating Environment ..............................................................................................81

Table 28 Levels and Contents of Events That Are Notified ......................................................................................84

Table 29 SNMP Specifications .................................................................................................................................85

Table 30 Control Software (Advanced Copy) ...........................................................................................................90

Table 31 Characteristics of SnapOPC/SnapOPC+ Operations with Each Type of Copy Destination Logical Volume .......

Table 32 REC Data Transfer Mode ...........................................................................................................................93

Table 33 Available Cascade Copy Combinations (When a Cascade Copy Performs Session 1 Followed by Session 2) ..

Table 34 Available Cascade Copy Combinations (When a Cascade Copy Performs Session 2 Followed by Session 1) ..

Table 35 Available Stripe Depth............................................................................................................................104

Table 36 Guideline for the Number of Drives and User Capacities (When 1.92TB SSDs Are Installed) ...................106

Table 37 Guideline for the Number of Drives and User Capacities (When 1.2TB SAS Disks Are Installed)..............109

Table 38 Deduplication/Compression Function Specifications...............................................................................114

Table 39 Method for Enabling the Deduplication/Compression Function..............................................................115

Table 40 Volumes That Are to Be Created depending on the Selection of "Deduplication" and "Compression"......116

Table 41 Deduplication/Compression Setting for TPPs Where the Target Volumes Can Be Created .......................116

Table 42 Target Deduplication/Compression Volumes of Each Function ...............................................................119

Table 43 Storage Cluster Function Specifications ..................................................................................................126

SAN Functions ..........................................................................................................................................15

Linkage ....................................................................................................................................................69

.................................................................................................................................................................91

...............................................................................................................................................................100

...............................................................................................................................................................101

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

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List of Tables

Table 44 Specifications for Paths and Volumes between the Local Storage System and the External Storage System

...............................................................................................................................................................

130

Table 45 Maximum VVOL Capacity........................................................................................................................137

Table 46 VVOL Management Information Specifications ......................................................................................137

Table 47 Volume Types That Can Be Used with Veeam Storage Integration..........................................................140

Table 48 Ethernet Frame Capacity (Jumbo Frame Settings)..................................................................................145

Table 49 Connectable Models and Available Remote Interfaces ...........................................................................152

Table 50 LAN Port Availability...............................................................................................................................160

Table 51 Estimated Cache Memory Capacity (ETERNUS DX500 S4) .......................................................................176

Table 52 Estimated Cache Memory Capacity (ETERNUS DX600 S4) .......................................................................176

Table 53 Estimated Cache Memory Capacity (ETERNUS DX500 S3) .......................................................................176

Table 54 Estimated Cache Memory Capacity (ETERNUS DX600 S3) .......................................................................177

Table 55 Installable PFM Capacity for Each Storage System..................................................................................178

Table 56 Number of Installable Drive Enclosures..................................................................................................181

Table 57 Drive Characteristics ...............................................................................................................................184

Table 58 Number of Installable Drives..................................................................................................................184

Table 59 Hot Swap and Hot Expansion Availability for Components.....................................................................208

Table 60 List of Supported Protocols.....................................................................................................................210

Table 61 Combinations of Functions That Can Be Executed Simultaneously (1/2) ................................................214

Table 62 Combinations of Functions That Can Be Executed Simultaneously (2/2) ................................................214

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

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Preface

Fujitsu would like to thank you for purchasing the FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 (hereinafter collectively referred to as ETERNUS DX).

The ETERNUS DX is designed to be connected to Fujitsu servers ( and other servers) or non-Fujitsu servers.

This manual provides the system design information for the ETERNUS DX storage systems. This manual is intended for use of the ETERNUS DX in regions other than Japan. This manual applies to the latest controller firmware version.

Fujitsu SPARC Servers, PRIMEQUEST, PRIMERGY,

Twenty-Fifth Edition

April 2019

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

Design Guide (Basic)

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Preface

Trademarks

Third-party trademark information related to this product is available at:

http://www.fujitsu.com/global/products/computing/storage/eternus/trademarks.html

About This Manual

Intended Audience

This manual is intended for field engineers or system administrators who design ETERNUS DX systems or use the ETERNUS DX.

Document Conventions

■

Third-Party Product Names

Oracle Solaris may be referred to as "Solaris", "Solaris Operating System", or "Solaris OS".

•

Microsoft® Windows Server® may be referred to as "Windows Server".

■

Notice Symbols

The following notice symbols are used in this manual:

Indicates information that you need to observe when using the ETERNUS storage system. Make sure to read the information.

Indicates information and suggestions that supplement the descriptions included in this manual.

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

Design Guide (Basic)

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Warning level indicator

Warning type indicator

Warning details

•

To avoid damaging the ETERNUS storage system, pay attention to the

following points when cleaning the ETERNUS storage system:

Warning layout ribbon

Example warning

- Make sure to disconnect the power when cleaning.

- Be car

eful that no liquid seeps into the ETERNUS storage system

when using cleaners, etc.

- Do not use alcohol or other solvents to clean the ETERNUS storage system.

CAUTION

Preface

Warning Signs

Warning signs are shown throughout this manual in order to prevent injury to the user and/or material damage. These signs are composed of a symbol and a message describing the recommended level of caution. The following explains the symbol, its level of caution, and its meaning as used in this manual.

The following symbols are used to indicate the type of warnings or cautions being described.

This symbol indicates the possibility of serious or fatal injury if the ETERNUS DX is not used properly.

This symbol indicates the possibility of minor or moderate personal injury, as well as damage to the

ETERNUS DX and/or to other users and their property, if the ETERNUS DX is not

used properly.

This symbol indicates IMPORTANT information for the user to note when using the ETERNUS DX.

The triangle emphasizes the urgency of the WARNING and CAUTION contents. Inside the

triangle and above it are details concerning the symbol (e.g. Electrical Shock).

The barred "Do Not..." circle warns against certain actions. The action which must be avoided is both illustrated inside the barred circle and written above it (e.g. No Disassembly).

The black "Must Do..." circle indicates actions that must be taken. The required action is both illustrated inside the black disk and written above it (e.g. Unplug).

How Warnings are Presented in This Manual

A message is written beside the symbol indicating the caution level. This message is marked with a vertical ribbon in the left margin, to distinguish this warning from ordinary descriptions.

A display example is shown here.

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Design Guide (Basic)

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1. Function Overview

The ETERNUS DX provides various functions to ensure data integrity, enhance security, reduce cost, and optimize the overall performance of the system.

The ETERNUS DX integrates block data (SAN area) and file data (NAS area) in a single device and also provides advanced functions according to each connection.

These functions enable to respond to problems from various situations. The ETERNUS DX has functions such as the SAN function (supports block data access), the NAS function (supports

file data access), and basic functions that can be used without needing to recognize the SAN or the NAS connection.

For more details about the basic functions, refer to "2. Basic Functions functions that are used for a SAN connection, refer to "3. SAN Functions" (page 112).

Table 1 Basic Functions

Overview Function

Data protection

Functions that ensure data integrity to improve data reliability. It is possible to detect and fix drive failures early.

Resource utilization (virtualization/Automated Storage Tiering)

Functions that deliver effective resource utilization.

Data capacity expansion

•

Functions that expand or relocate a RAID group or a volume in order to flexibly meet any increases in the amount of data.

Guarantee of performance

•

A function that creates a volume that is striped in multiple RAID groups in order to improve performance.

Security measures (data encryption)

Functions that encrypt data in the drive media to prevent the data from being fraudulently decoded.

Security measures (user access management)

Functions to prevent information leakage that are caused by a malicious access.

Environmental burden reduction

Functions that adjust the operating time and the environment of the installation location in order to reduce power consumption.

Operation management (device monitoring)

Function that reduce load on the system administrator, and that improve system stability and increase operating ratio of the system.

Power control

Power control functions that are used to link power-on and power-off operations with servers and perform scheduled operations.

" (page 16). For more details about the

"Data Block Guard" (page 31) "Disk Drive Patrol "Redundant Copy" (page 34) "Rebuild" (page 35) "Fast Recovery" (page 36) "Copyback/Copybackless" (page 37) "Protection (Shield)" (page 39) "Reverse Cabling" (page 41)

"Thin Provisioning" (page 42) "Flexible Tier "Extreme Cache" (page 55) "Extreme Cache Pool" (page 56)

"RAID Migration" (page 59) "Logical Device Expansion "LUN Concatenation" (page 62) "Wide Striping" (page 65)

"Encryption with Self Encrypting Drive (SED)" (page 67) "Firmware Data Encryption" (page 68) "Key Management Server Linkage" (page 69)

"Account Management" (page 72) "User Authentication" (page 74) "Audit Log" (page 76)

"Eco-mode" (page 77) "Power Consumption Visualization

"Operation Management Interface" (page 81) "Performance Information Management "Event Notification" (page 84) "Device Time Synchronization" (page 87)

"Power Synchronized Unit" (page 88) "Remote Power Operation (Wake On LAN)

" (page 33)

" (page 49)

" (page 61)

" (page 80)

" (page 82)

" (page 89)

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1. Function Overview

Overview Function

High-speed backup

•

Continuous business

•

Data can be duplicated at any point without affecting other operations.

Performance tuning

A function that can perform tuning in order to improve performance.

Simple configuration

A wizard that simplifies the configuration of Thin Provisioning.

Table 2 SAN Functions

Overview Function

Operations Optimization (Deduplication/Compression)

A function that eliminates duplicated data and compresses the data to reduce the amount of written data.

Security measures (unauthorized access prevention)

Functions that prevent unintentional storage access.

Stable operation

For stable operation of server connections, the appropriate response action and the processing priority can be specified for each server.

If an error occurs in the storage system during operations, the connected storage system is switched automatically and operations can continue.

Data relocation

A function that migrates data between ETERNUS storage systems.

Non-disruptive data relocation

A function that migrates data between ETERNUS storage systems without stopping the business server.

Information linkage (function linkage with servers)

Functions that cooperate with a server to improve performance in a virtualized environment. Beneficial effects such as centralized management of the entire storage system and a reduction of the load on servers can be realized.

"Backup (SAN)" (page 91)

"Striping Size Expansion" (page 104) "Assigned CMs

"Smart Setup Wizard" (page 106)

"Deduplication/Compression" (page 112)

"Host Affinity" (page 120) "iSCSI Security

"Quality of Service (QoS)" (page 122) "Host Response" (page "Storage Cluster" (page 125)

"Storage Migration" (page 128)

"Non-disruptive Storage Migration" (page 130)

"Oracle VM Linkage" (page 132) "VMware Linkage "Veeam Storage Integration" (page 138) "Microsoft Linkage" (page 141) "OpenStack Linkage" (page 142) "Logical Volume Manager (LVM)" (page 143)

" (page 105)

" (page 122)

124)

" (page 133)

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2. Basic Functions

This chapter describes the functions that control the storage system.

RAID Functions

This section explains the points to note before configuring a system using the ETERNUS DX.

Supported RAID

The ETERNUS DX supports the following RAID levels.

RAID0 (striping)

•

RAID1 (mirroring)

•

RAID1+0 (striping of pairs of drives for mirroring)

•

RAID5 (striping with distributed parity)

•

RAID5+0 (double striping with distributed parity)

•

RAID6 (striping with double distributed parity)

•

RAID6-FR (provides the high speed rebuild function, and striping with double distributed parity)

•

Remember that a RAID0 configuration is not redundant. This means that if a RAID0 drive fails, the data will not be recoverable.

This section explains the concepts and purposes (RAID level selection criteria) of the supported RAID levels.

When Nearline SAS disks that have 6TB or more are used, the available RAID levels are RAID0, RAID1, RAID6, and RAID6-FR.

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A C

B D

Dat

a writing request

Drive#0 Drive#1

A B C D

A B

C D

A B C D

Data writing request

A B

C D

Drive#0 Drive#1

2. Basic Functions RAID Functions

■

RAID Level Concept

A description of each RAID level is shown below.

● RAID0 (Striping)

Data is split in unit of blocks and stored across multiple drives.

Figure 1 RAID0 Concept

● RAID1 (Mirroring)

The data is stored on two duplicated drives at the same time. If one drive fails, other drive continues operation.

Figure 2 RAID1 Concept

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Drive#3

Drive#7

Drive#2

Drive#6

Drive#1

Drive#5

rive#0

Drive#4

Striping (RAID0)

Mir

roring (RAID1)

Data writing request

A B C D

Mirroring

A B C D

Data writing request

B F

P M, N, O, P

P I, J, K, L

P E, F, G, H

Create parity data

P A, B, C, D

A B DC

Drive#0 Drive#1 Drive#2 Drive#3 Drive#4

Parity for data A to D: P A, B, C, D Parity for data E to H: P E, F, G, H Parity for data I to L: P I, J, K, L Parity for data M to P: P M, N, O, P

2. Basic Functions RAID Functions

● RAID1+0 (Striping of Pairs of Drives for Mirroring)

RAID1+0 combines the high I/O performance of RAID0 (striping) with the reliability of RAID1 (mirroring).

Figure 3 RAID1+0 Concept

● RAID5 (Striping with Distributed Parity)

Data is divided into blocks and allocated across multiple drives together with parity information created from the data in order to ensure the redundancy of the data.

Figure 4 RAID5 Concept

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Striping with dis

tributed parity (RAID5)

Striping (RAID0)

P A, B

P M, N

C G H

P C, D

P O, P

Drive#0 Drive#1 Drive#2 Drive#3 Drive#4 Drive#5

P K, L

Striping (RAID0)

Striping with

distributed parity

(RAID5)

P E, F

P I, J

P G, H

RAID5 RAID5

A B

Create parity data

Data writing request

A B

C D

A B C D

2. Basic Functions RAID Functions

● RAID5+0 (Double Striping with Distributed Parity)

Multiple RAID5 volumes are RAID0 striped. For large capacity configurations, RAID5+0 provides better performance, better reliability, and shorter rebuilding times than RAID5.

Figure 5 RAID5+0 Concept

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P2 M, N

, O, P

P2 I, J, K, L

B C D

Data writing request

B F

P1 M, N, O, P

C G

P1 I, J, K, L

P1 E, F, G, H P2 E, F

, G, H

K O

A, B, C, D

A B DC

Create parity data

Drive#0 Drive#1 Drive#2 Drive#3 Drive#4 Drive#5

Parity for data A to D: P1 A, B, C, D and P2 A, B, C, D Parity for data E to H: P1 E, F, G, H and P2 E, F, G, H Parity for data I to L: P1 I, J, K, L and P2 I, J, K, L Parity for data M to P: P1 M, N, O, P and P2 M, N, O, P

2. Basic Functions RAID Functions

● RAID6 (Striping with Double Distributed Parity)

Allocating two different parities on different drives (double parity) makes it possible to recover from up to two drive failures.

Figure 6 RAID6 Concept

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RAID6-FR ((3D+2P) × 2 + 1HS)

FHS

X W

FHS

A B C D

Data writing request

A B C D

Create parity data Create parity data

P1 A, B, C

P1 P, Q, RP2 P, Q, R

P1 V, W, X

P1 M, N, O

P2 M, N, O

P1 D, E, F

P2 J, K, L

P2 D, E, F

P1 J, K, L

P1 S, T, U

P2 G, H, I P1 G, H, I

P2 S, T, U

P2 A, B, C

P2 V, W, X

Drive#0 Drive#1 Drive#2 Drive#3 Drive#4 Drive#5 Drive#6 Drive#7 Drive#8 Drive#9 Drive#10

Parity for data A, B, C: P1 A, B, C and P2 A, B, C Parity for data D, E, F: P1 D, E, F and P2 D, E, F Parity for data G, H, I: P1 G, H, I and P2 G, H, I Parity for data J, K, L: P1 J, K, L and P2 J, K, L Parity for data M, N, O: P1 M, N, O and P2 M, N, O Parity for data P, Q, R: P1 P, Q, R and P2 P, Q, R Parity for data S, T, U: P1 S, T, U and P2 S, T, U Parity for data V, W, X: P1 V, W, X and P2 V, W, X : Fast recovery Hot Spare: FHS

2. Basic Functions RAID Functions

● RAID6-FR (Provides the High Speed Rebuild Function, and Striping with Double Distributed Parity)

Distributing multiple data groups and reserved space equivalent to hot spares to the configuration drives makes it possible to recover from up to two drive failures. RAID6-FR requires less build time than RAID6.

Figure 7 RAID6-FR Concept

■

Reliability, Performance, Capacity for Each RAID Level

Table 3 shows the comparison result of reliability, performance, capacity for each RAID level.

Table 3 RAID Level Comparison

RAID level Reliability Performance (*1) Capacity

RAID0

RAID1

RAID1+0

RAID5

RAID5+0

RAID6 ◎

RAID6-FR ◎

◎ ◎

¡ ¡

¡ ¡ ¡

◎ △

¡ ¡

◎: Very good ¡: Good △: Reasonable ´: Poor

*1: Performance may differ according to the number of drives and the processing method from the host.

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2. Basic Functions RAID Functions

■

Recommended RAID Level

Select the appropriate RAID level according to the usage.

Recommended RAID levels are RAID1, RAID1+0, RAID5, RAID5+0, RAID6, and RAID6-FR.

•

When importance is placed upon read and write performance, a RAID1+0 configuration is recommended.

•

For read only file servers and backup servers, RAID5, RAID5+0, RAID6, or RAID6-FR can also be used for higher

•

efficiency. However, if the drive fails, note that data restoration from parities and rebuilding process may result in a loss in performance.

For SSDs, a RAID5 configuration or a fault tolerant enhanced RAID6 configuration is recommended because

•

SSDs operate much faster than other types of drive. For large capacity SSDs, using a RAID6-FR configuration, which provides excellent performance for the rebuild process, is recommended.

Using a RAID6 or RAID6-FR configuration is recommended when Nearline SAS disks that have 6TB or more are

•

used. For details on the RAID levels that can be configured with Nearline SAS disks that have 6TB or more, refer to "

Supported RAID" (page 16).

User Capacity (Logical Capacity)

User Capacity for Each RAID Level

The user capacity depends on the capacity of drives that configure a RAID group and the RAID level.

Table 4 shows the formula for calculating the user capacity for each RAID level.

Table 4 Formula for Calculating User Capacity for Each RAID Level

RAID level Formula for user capacity computation

RAID0

RAID1

RAID1+0

RAID5

RAID5+0

RAID6

RAID6-FR

*1: "N" is the number of RAID6 configuration sets. For example, if a RAID6 group is configured with "(3D+2P)

´2+1HS", N is "2".

Drive capacity ´ Number of drives

Drive capacity ´ Number of drives ¸ 2

Drive capacity ´ (Number of drives - 1)

Drive capacity ´ (Number of drives - 2)

Drive capacity ´ (Number of drives - (2 ´ N) - Number of hot spares) (*1)

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2. Basic Functions RAID Functions

User Capacity of Drives

Table 5

shows the user capacity for each drive.

The supported drives vary between the ETERNUS DX500 S4/DX600 S4 and the ETERNUS DX500 S3/DX600 S3. For details about drives, refer to "Overview" of the currently used storage systems.

Table 5 User Capacity per Drive

Product name (*1) User capacity

400GB SSD 374,528MB

800GB SSD 750,080MB

960GB SSD 914,432MB

1.6TB SSD 1,501,440MB

1.92TB SSD 1,830,144MB

3.84TB SSD 3,661,568MB

7.68TB SSD 7,324,416MB

15.36TB SSD 14,650,112MB

30.72TB SSD 29,301,504MB

300GB SAS disk 279,040MB

600GB SAS disk 559,104MB

900GB SAS disk 839,168MB

1.2TB SAS disk 1,119,232MB

1.8TB SAS disk 1,679,360MB

2.4TB SAS disk 2,239,744MB

1TB Nearline SAS disk 937,728MB

2TB Nearline SAS disk 1,866,240MB

3TB Nearline SAS disk 2,799,872MB

4TB Nearline SAS disk 3,733,504MB

6TB Nearline SAS disk (*2) 5,601,024MB

8TB Nearline SAS disk (*2) 7,468,288MB

10TB Nearline SAS disk (*2) 9,341,696MB

12TB Nearline SAS disk (*2) 11,210,496MB

14TB Nearline SAS disk (*2) 13,079,296MB

*1: The capacity of the product names for the drives is based on the assumption that 1MB = 1,0002 bytes,

while the user capacity for each drive is based on the assumption that 1MB = 1,0242 bytes. Furthermore, OS file management overhead will reduce the actual usable capacity.

The user capacity is constant regardless of the drive size (2.5"/3.5"), the SSD type (Value SSD and MLC SSD), or the encryption support (SED).

*2: For details on the RAID levels that can be configured with Nearline SAS disks that have 6TB or more, refer

Supported RAID" (page 16).

to "

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2. Basic Functions RAID Functions

RAID Group

This section explains RAID groups. A RAID group is a group of drives. It is a unit that configures RAID. Multiple RAID groups with the same RAID

level or multiple RAID groups with different RAID levels can be set together in the group is created, RAID levels can be changed and drives can be added.

Table 6 RAID Group Types and Usage

ETERNUS DX. After a RAID

Type Usage

RAID group Areas to store normal data. Volumes (Standard, WSV,

SDV, SDPV) for work and Advanced Copy can be created in a RAID group.

REC Disk Buffer Areas that are dedicated for the REC Consistency mode to

temporarily back up copy data.

Thin Provisioning Pool (TPP) (*5)

Flexible Tier Sub Pool (FTSP) (*6)

RAID groups that are used for Thin Provisioning in which the areas are managed as a Thin Provisioning Pool (TPP). Thin Provisioning Volumes (TPVs) can be created in a TPP.

RAID groups that are used for the Flexible Tier function in which the areas are managed as a Flexible Tier Sub Pool (FTSP). Larger pools (Flexible Tier Pools: FTRPs) are comprised by layers of FTSPs. Flexible Tier Volumes (FTVs) can be created in an FTSP.

*1: This value is for a 15.36TB SSD RAID6-FR ([13D+2P]´2+1HS) configuration in the

Maximum capacity

Per RAID group Per storage system

Approximately 363TB (*1)

Approximately 726TB (*2)

Approximately 55TB (*3)

Approximately 111TB (*4)

3,072TB (ETERNUS DX500 S4/DX500 S3) (*7) 8,192TB (ETERNUS DX600 S4/DX600 S3

Depends on the number of installable drives

110TB (*3) 222TB (*4)

) (*7)

ETERNUS DX500 S3/DX600

S3. For details on the number of configuration drives for each RAID level and recommended configurations,

refer to Table 7.

*2: This value is for a 30.72TB SSD RAID6-FR ([13D+2P]´2+1HS) configuration in the

ETERNUS DX500 S4/DX600

S4. For details on the number of configuration drives for each RAID level and recommended configurations,

refer to Table 7.

*3: This value is for a 15.36TB SSD RAID1+0 (4D+4M) configuration in the ETERNUS DX500 S3/DX600 S3. *4: This value is for a 30.72TB SSD RAID1+0 (4D+4M) configuration in the ETERNUS DX500 S4/DX600 S4. *5: For details on the number of configuration drives for each RAID level and recommended configurations,

refer to Table 14.

*6: For details on the number of configuration drives for each RAID level and recommended configurations,

refer to Table 19.

*7: Total of the Thin Provisioning Pool capacity and the FTSP capacity.

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RAID group 1 RAID group 2

SAS

600GB

SAS

600GB

SAS

600GB

SAS

600GB

SSD

400GB

SSD

400GB

SSD

400GB

SSD

400GB

2. Basic Functions RAID Functions

The same size drives (2.5", 3.5") and the same kind of drives (SAS disks, Nearline SAS disks, SSDs, or SEDs) must be used to configure a RAID group.

Figure 8 Example of a RAID Group

SAS disks and Nearline SAS disks can be installed together in the same group. Note that SAS disks and Near-

•

line SAS disks cannot be installed with SSDs or SEDs. Use drives that have the same size, capacity, rotational speed (for disks), Advanced Format support, inter-

•

face speed (for SSDs), and drive enclosure transfer speed (for SSDs) to configure RAID groups.

For details on the RAID levels that can be configured with Nearline SAS disks that have 6TB or more, refer to

•

"Supported RAID

If a RAID group is configured with drives that have different capacities, all the drives in the RAID group are recognized as having the same capacity as the drive with the smallest capacity in the RAID group and the rest of the capacity in the drives that have a larger capacity cannot be used.

If a RAID group is configured with drives that have different rotational speeds, the performance of all of the drives in the RAID group is reduced to that of the drive with the lowest rotational speed.

If a RAID group is configured with SSDs that have different interface speeds, the performance of all of the SSDs in the RAID group is reduced to that of the SSD with the lowest interface speed.

3.5" SAS disks are handled as being the same size type as the drives for high-density drive enclosures. For example, 3.5" Nearline SAS disks and Nearline SAS disks for high-density drive enclosures can exist together in the same RAID group.

When a RAID group is configured with SSDs in both the high-density drive enclosure (6Gbit/s), and the

3.5" type drive enclosure or the high-density drive enclosure (12Gbit/s), because the interface speed of the high-density drive enclosure (6Gbit/s) is 6Gbit/s, all of the SSDs in the RAID group operate at 6Gbit/s.

" (page 16).

Table 7 shows the recommended number of drives that configure a RAID group.

Table 7 Recommended Number of Drives per RAID Group

RAID level

RAID1 2 2(1D+1M)

RAID1+0 4 to 32 4(2D+2M), 6(3D+3M), 8(4D+4M), 10(5D+5M)

RAID5 3 to 16 3(2D+1P), 4(3D+1P), 5(4D+1P), 6(5D+1P)

RAID5+0 6 to 32

RAID6 5 to 16 5(3D+2P), 6(4D+2P), 7(5D+2P)

RAID6-FR 11 to 31

Number of configuration drives

Recommended number of drives (*1)

3(2D+1P) ´ 2,

17 ((6D+2P) ´2+1HS)

4(3D+1P) ´ 2, 5(4D+1P) ´ 2, 6(5D+1P) ´ 2

*1: D = Data, M = Mirror, P = Parity, HS = Hot Spare

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RAID group 1 RAID group 2

Volume 1

Volume 2

Volume 3

2. Basic Functions RAID Functions

Sequential access performance hardly varies with the number of drives for the RAID group.

•

Random access performance tends to be proportional to the number of drives for the RAID group.

•

Use of higher capacity drives will increase the time required for the drive rebuild process to complete.

•

For RAID5, RAID5+0, and RAID6, ensure that a single RAID group is not being configured with too many

•

drives. If the number of drives increases, the time to perform data restoration from parities and Rebuild/Copyback

when a drive fails also increases. For details on the recommended number of drives, refer to Table 7. The RAID level that can be registered in REC Disk Buffers is RAID1+0. The drive configurations that can be

•

registered in REC Disk Buffers is 2D+2M or 4D+4M. For details on the Thin Provisioning function and the RAID configurations that can be registered in Thin Pro-

visioning Pools, refer to "Storage Capacity Virtualization" (page 43 For details on the Flexible Tier functions and the RAID configurations that can be registered in Flexible Tier

Pools, refer to "Automated Storage Tiering" (page 49).

Volume

An assigned CM is allocated to each RAID group. For details, refer to "

Assigned CMs" (page 105).

For the installation locations of the drives that configure the RAID group, refer to "Recommended RAID Group

Configuration" (page 200).

This section explains volumes. Logical drive areas in RAID groups are called volumes. A volume is the basic RAID unit that can be recognized by the server.

Figure 9 Volume Concept

A volume may be up to 128TB. However, the maximum capacity of volume varies depending on the OS of the server.

The maximum number of volumes that can be created in the

ETERNUS DX is 16,384. Volumes can be created

until the combined total for each volume type reaches the maximum number of volumes. A volume can be expanded or moved if required. Multiple volumes can be concatenated and treated as a single

volume. For availability of expansion, displacement, and concatenation for each volume, refer to "Target Vol-

umes of Each Function" (page 212).

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2. Basic Functions RAID Functions

The types of volumes that are listed in the table below can be created in the ETERNUS DX.

Table 8 Volumes That Can Be Created

Type Usage Maximum capacity

Standard (Open) A standard volume is used for normal usage, such as file sys-

Snap Data Volume (SDV) This area is used as the copy destination for SnapOPC/

Snap Data Pool Volume (SDPV) This volume is used to configure the Snap Data Pool (SDP)

Thin Provisioning Volume (TPV) This virtual volume is created in a Thin Provisioning Pool area. 128TB

Flexible Tier Volume (FTV) This volume is a target volume for layering. Data is automati-

Virtual Volumes (VVOLs) A VVOL is a VMware vSphere dedicated capacity virtualization

Deduplication/Compression Volume This volume is a virtual volume that is recognized by the serv-

Wide Striping Volume (WSV) This volume is created by concatenating distributed areas in

ODX Buffer volume An ODX Buffer volume is a dedicated volume that is required

tems and databases. The server recognizes it as a single logical unit.

"Standard" is displayed as the type for this volume in ETERNUS Web GUI/ETERNUS CLI and "Open" is displayed in ETERNUS SF software.

SnapOPC+. There is a SDV for each copy destination.

area. The SDP capacity equals the total capacity of the SDPVs. A volume is supplied from a SDP when the amount of updates exceeds the capacity of the copy destination SDV.

cally redistributed in small block units according to the access frequency. An FTV belongs to a Flexible Tier Pool.

volume. Operations can be simplified by associating VVOLs with virtual disks.

Its volume type is FTV.

er when the Deduplication/Compression function is used. It can be created by enabling the Deduplication/Compression setting for a volume that is to be created. The data is seen by the server as being non-deduplicated and uncompressed.

The volume type is TPV.

from 2 to 64 RAID groups. Processing speed is fast because data access is distributed.

to use the Offloaded Data Transfer (ODX) function of Windows Server 2012 or later. It is used to save the source data when data is updated while a copy is being processed.

It can be created one per ETERNUS DX. Its volume type is Standard, TPV, or FTV.

128TB (*1)

24 [MB] + copy source volume capacity ´ 0.1 [%] (*2)

2TB

128TB

1TB

*1: When multiple volumes are concatenated using the LUN Concatenation function, the maximum capacity is

also

128TB. *2: The capacity differs depending on the copy source volume capacity. After a volume is created, formatting automatically starts. A server can access the volume while it is being for-

matted. Wait for the format to complete if high performance access is required for the volume.

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Hot spare

Failure

RAID group

2. Basic Functions RAID Functions

In the ETERNUS DX

•

parameter. For details about the stripe sizes for each RAID level and the stripe depth parameter values, refer to "ETER-

NUS Web GUI User's Guide". Note that the available user capacity can be fully utilized if an exact multiple of the stripe size is set for the

volume size. If an exact multiple of the stripe size is not set for the volume size, the capacity is not fully utilized and some areas remain unused.

When a Thin Provisioning Pool (TPP) is created, a control volume is created for each RAID group that config-

•

ures the relevant TPP. Therefore, the maximum number of volumes that can be created in the ETERNUS DX decreases by the number of RAID groups that configure a TPP.

When the Flexible Tier function is enabled, 64 work volumes are created. The maximum number of volumes

•

that can be created in the ETERNUS DX decreases by the number of work volumes that are created. When a Flexible Tier Sub Pool (FTSP) is created, a control volume is created for each RAID group that config-

•

ures the relevant FTSP. Therefore, the maximum number of volumes that can be created in the ETERNUS DX decreases by the number of RAID groups that configure an FTSP.

When using the VVOL function, a single volume for the VVOL management information is created the mo-

•

ment a VVOL is created. The maximum number of volumes that can be created in the ETERNUS DX decreases by the number of volumes for the VVOL management information that are created.

Hot Spares

, volumes have different stripe sizes that depend on the RAID level and the stripe depth

Hot spares are used as spare drives for when drives in a RAID group fail, or when drives are in error status.

Figure 10 Hot Spares

When the RAID level is RAID6-FR, data in a failed drive can be restored to a reserved space in a RAID group even when a drive error occurs because a RAID6-FR RAID group retains a reserved space for a whole drive in the RAID group. If the reserved area is in use and an error occurs in another drive (2nd) in the RAID group, then the hot spare is used as a spare.

■

Types of Hot Spares

The following two types of hot spare are available:

Global Hot Spare

•

This is available for any RAID group. When multiple hot spares are installed, the most appropriate drive is automatically selected and incorporated into a RAID group.

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2. Basic Functions RAID Functions

Dedicated Hot Spare

•

This is only available to the specified RAID group (one RAID group). The Dedicated Hot Spare cannot be registered in a RAID group that is registered in TPPs, FTRPs, or REC Disk

Buffers.

Assign "Dedicated Hot Spares" to RAID groups that contain important data, in order to preferentially improve their access to hot spares.

■

Number of Installable Hot Spares

The number of required hot spares is determined by the total number of drives. The following table shows the recommended number of hot spares for each drive type.

Table 9 Hot Spare Installation Conditions

Model

ETERNUS DX500 S4/DX500 S3 1 2 4 6 — —

ETERNUS DX600 S4/DX600 S3 1 2 4 6 8 9

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Types of Drives

If a combination of SAS disks, Nearline SAS disks, SSDs, and SEDs is installed in the ETERNUS DX, each different type of drive requires a corresponding hot spare.

2.5" and 3.5" drive types are available. The drive type for high-density drive enclosures is 3.5". There are two types of rotational speeds for SAS disks; 10,000rpm and 15,000rpm. If a drive error occurs and a

hot spare is configured in a RAID group with different rotational speed drives, the performance of all the drives in the RAID group is determined by the drive with the slowest rotational speed. When using SAS disks with different rotational speeds, prepare hot spares that correspond to the different rotational speed drives if required. Even if a RAID group is configured with SAS disks that have different interface speeds, performance is not affected.

There are two types of interface speeds for SSDs; 6Gbit/s and 12Gbit/s. If a drive error occurs and a hot spare is configured in a RAID group with different interface speed SSDs, the performance of all the SSDs in the RAID group is determined by the SSDs with the slowest interface speed. Preparing SSDs with the same interface speed as the hot spare is recommended.

The capacity of each hot spare must be equal to the largest capacity of the same-type drives.

Total number of drives

Up to 120 Up to 240 Up to 480 Up to 720 Up to 960 Up to 1056

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Selection Criteria

When multiple Global Hot Spares are installed, among the drives that match the selection criteria in the order of priority for Condition 1, drives that match the selection criteria in the order of priority for Condition 2 are automatically selected as a hot spare to replace the failed drive.

If different drive types or capacities are mixed, the recommended action is to install a hot spare for each different drive type or capacity on each path.

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

Design Guide (Basic)

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RAID group

Failure

2. Basic Functions RAID Functions

● Condition 1

Table 10 Hot Spare Selection Criteria (Condition 1)

Selection order

1 A drive enclosure that is located in the same path as the failed drive

2 A drive enclosure that is not located in the same path as the failed drive

Selection criteria

● Condition 2

Table 11 Hot Spare Selection Criteria (Condition 2)

Selection order

1 A hot spare with the same type, same capacity, and same rotational speed (for disks) or same interface speed

2 A hot spare with the same type, and same rotational speed (for disks) or same interface speed (for SSDs) as the

3 A hot spare with the same type and same capacity as the failed drive but with a different rotational speed (for

4 A hot spare with the same type as the failed drive but with a larger capacity and a different rotational speed (for

*1: If multiple drives are applicable, priority is given to the drives in ascending order of the enclosure number

and the drive slot number.

*2: When there are multiple hot spares with a larger capacity than the failed drive, the hot spare with the

smallest capacity among them is used first. The figure below shows an example of a drive search order when a drive failure occurs. First, drives are selected in the order of priority (1 to 4) for Condition 2 among the drives in the drive enclosures

that are located in the same path as the failed drive. If there are no applicable drives in the same path, drives that match Condition 2 are selected in the order of priority (1 to 4) among the drives that match priority order 2 of Condition 1.

Figure 11 Hot Spare Selection Criteria

Selection criteria

(for SSDs) as the failed drive (*1)

failed drive but with a larger capacity (*1) (*2)

disks) or a different interface speed (for SSDs) (*1)

disks) or a different interface speed (for SSDs) (*1) (*2)

Search order (order of priority described in Table 10)

Priority order 1

Priority order 2

FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems

Design Guide (Basic)

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+ 188 hidden pages

Fujitsu ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Design Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

List of Figures

List of Tables

Preface

Trademarks

About This Manual

Intended Audience

Related Information and Documents

Document Conventions

Warning Signs

1. Function Overview

2. Basic Functions

RAID Functions

Supported RAID

User Capacity (Logical Capacity)

RAID Group

Volume

Hot Spares