Contents
Figures ..............vii
Tables ...............ix
Safety and Environmental notices . . . xi
Safety notices ..............xi
Environmental notices...........xii
About this guide ..........xiii
Who should use this guide .........xiii
Conventions used in this guide .......xiii
DS8000 library and related publications.....xiii
How to order IBM publications .......xvi
Send us your feedback ..........xvi
Summary of changes ........xix
Chapter 1. Introduction to IBM System
Storage DS8000 series ........1
DS8700 overview .............1
DS8700 (Models 941 and 94E)........4
DS8800 overview .............5
DS8800 (Models 951 and 95E)........7
Machine types overview ..........14
Features overview ............14
Limitations ..............19
DS Storage Manager limitations ......20
DS8000 physical footprint .........20
Chapter 2. Hardware and features . . . 23
Storage complexes ............23
IBM System Storage Hardware Management
Console................23
RAID implementation ...........24
RAID 5 overview ...........24
RAID 6 overview ...........25
RAID 10 overview ...........25
DS8000 Interfaces ............25
System Storage DS Storage Manager .....25
Tivoli Storage Productivity Center ......26
DS command-line interface ........27
DS Open Application Programming Interface . . 28
Tivoli Storage Productivity Center for Replication 28
DS8000 hardware specifics .........29
Storage unit structure ..........29
Disk drives .............30
Host attachment overview ........30
Processor memory ...........34
Subsystem device driver for open-systems ....34
Balancing the I/O load ..........34
Storage consolidation ...........35
Count key data .............36
Fixed block ..............36
T10 DIF support ............36
Logical volumes .............37
Allocation, deletion, and modification of volumes 37
LUN calculation .............38
Extended address volumes for CKD ......39
Quick initialization ............40
Chapter 3. Data management features 41
FlashCopy SE feature ...........41
Dynamic volume expansion .........42
Count key data and fixed block volume deletion
prevention...............42
IBM System Storage Easy Tier ........42
Easy Tier: automatic mode ........44
Easy Tier: manual mode .........48
Monitoring volume data .........51
Managing migration processes .......51
IBM System Storage DS8000 Storage Tier Advisor
Tool................52
Easy Tier considerations and limitations ....53
Performance for System z .........54
Copy Services .............55
Thin provisioned and Global Mirror volume
considerations ............63
Disaster recovery using Copy Services ....64
Resource groups for Copy Services scope limiting 65
Comparison of licensed functions .......67
Logical configuration overview ........67
I/O Priority Manager ...........69
Encryption ..............70
Encryption concepts ..........70
Tivoli Key Lifecycle Manager .......71
IBM Security Key Lifecycle Manager for z/OS. . 74
DS8000 disk encryption .........74
Encryption deadlock ..........78
Best practices for encrypting storage
environments.............79
Guidelines and requirements for key server
management .............85
Exporting and importing keys between key
server instances ............85
DS8000 encryption considerations ......86
Virtual private network .........87
Chapter 4. Planning the physical
configuration ............89
Overview of physical configurations ......89
Configuration controls..........90
Determining physical configuration features . . 90
Management console features ........91
Internal and external management consoles . . 91
Management console external power cord . . . 92
Configuration rules for management consoles . . 93
Storage features .............93
Disk drives and disk enclosures ......93
Standby CoD disk sets..........97
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