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Functional and Operational Characteristics 3-1

Hitachi Universal Storage Platform V/VM User and Reference Guide

Functional and Operational

Characteristics

This chapter discusses the functional and operational capabilities of the

Universal Storage Platform V/VM.

 RAID Implementation

 CU Images, LVIs, and LUs

 Storage Navigator

 System Option Modes, Host Modes, and Host Mode Options

 Mainframe Operations

 Open-Systems Operations

 Battery Backup Operations

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 101 102

User and Reference Guide 1
Contents 3
Acronyms and Abbreviations 5
Preface 7
CLASS 1 LASER PRODUCT 8
LASER KLASSE 1 8
Intended Audience 9
Product Version 9
Document Revision Level 9
Changes in this Revision 10
Document Organization 10
Referenced Documents 11
Document Conventions 11
Getting Help 12
Comments 13
Product Overview 15
1-2 Product Overview 16
• Specifications 17
Specifications at a Glance 18
Product Overview 1-5 19
1-6 Product Overview 20
Product Overview 1-7 21
Software Products 22
Product Overview 1-9 23
1-10 Product Overview 24
Product Overview 1-11 25
1-12 Product Overview 26
Architecture and Components 27
Hardware Architecture 28
DKA DKA 29
Storage Clusters 30
Hardware Components 31
Shared Memory 32
Cache Memory 32
Disk Drives and Flash Drives 37
Service Processor 38
Power Supplies 38
Batteries 38
Control Panel 39
Emergency Power-Off Switch 41
RAID-Level Intermix 42
Data Drive Intermix 43
Device Emulation Intermix 43
Functional and Operational 45
Characteristics 45
RAID Implementation 46
Sequential Data Striping 48
Array group 1 (7D+1P) 49
Array group 2 (7D+1P) 49
LDEV Striping 49
CU Images, LVIs, and LUs 51
Logical Units 52
Storage Navigator 53
System Option Modes 54
 Mode 506 = ON (default): 63
 Mode 506 = OFF: 63
 File system is used 74
Mainframe Operations 79
Mainframe Configuration 80
Open-Systems Operations 81
Open-Systems Configuration 83
Battery Backup Operations 84
Destage Mode 85
Backup Mode 85
Troubleshooting 87
General Troubleshooting 88
Service Information Messages 89
4-4 Troubleshooting 90
MK-96RD635-12 102

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