book

IBM DS8870 Architecture and Implementation (Release 7.5)

by Bertrand Dufrasne, Werner Bauer, Artur Borowicz, Adrian Orben, Robert Tondini, Bob Xiao

July 2015

Intermediate to advanced

474 pages

14h 14m

English

IBM Redbooks

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July 2015, Sixth Edition
1.1 Introduction to the IBM DS88701.1.1 Features of the DS88701.2 DS8870 controller options and frames1.3 DS8870 architecture and functions overview1.3.1 Overall architecture and components1.3.2 Storage capacity1.3.3 Supported environments1.3.4 Configuration flexibility1.3.5 Copy Services functions1.3.6 Service and setup1.3.7 IBM Certified Secure Data Overwrite1.4 Performance features1.4.1 16 Gbps host adapters1.4.2 DS8000 Multi-thread Performance Accelerator1.4.3 Sophisticated caching algorithms1.4.4 Flash storage1.4.5 Multipath Subsystem Device Driver1.4.6 Performance for z Systems1.4.7 Performance enhancements for IBM Power Systems
2.1 Terminology of the DS88702.2 DS8870 configurations and models2.2.1 DS8870 High-Performance All-Flash configuration2.2.2 DS8870 Enterprise Class configuration2.2.3 DS8870 Business Class configuration2.2.4 DS8870 Base Frame (Model 961)2.2.5 DS8870 expansion frames (Model 96E)2.2.6 Scalable upgrades2.2.7 Licensed functions2.3 DS8870 architecture overview2.3.1 IBM POWER7+ processor-based server2.3.2 Processor memory2.3.3 Flexible service processor and system power control network2.3.4 Peripheral Component Interconnect Express Adapters2.4 I/O enclosures and adapters2.4.1 Cross-cluster communication2.4.2 I/O enclosure adapters2.5 Storage enclosures and drives2.5.1 Drive enclosures2.5.2 Standard drive enclosures2.6 Power and cooling2.7 Management Console and network2.7.1 Ethernet switches2.7.2 DS8870 operator panel2.8 Hardware features summary for DS8870 configurations2.9 Capacity on Demand
3.1 DS8870 processor complex features3.1.1 POWER7+ Hypervisor3.1.2 POWER7+ processor3.1.3 AIX operating system3.1.4 Cross-cluster communication3.1.5 Environmental monitoring3.1.6 Resource deconfiguration3.2 CPC failover and failback3.2.1 Dual cluster operation and data protection3.2.2 Failover3.2.3 Failback3.2.4 NVS and power outages3.3 Data flow in DS88703.3.1 I/O enclosures3.3.2 Host connections3.3.3 Metadata checks3.4 RAS on the Management Console3.4.1 Microcode updates3.4.2 Call home and remote support3.5 RAS on the storage subsystem3.5.1 RAID configurations3.5.2 Drive path redundancy3.5.3 Predictive Failure Analysis3.5.4 Disk scrubbing3.5.5 Smart Rebuild3.5.6 RAID 5 overview3.5.7 RAID 6 overview3.5.8 RAID 10 overview3.5.9 Spare creation3.6 RAS on the power subsystem3.6.1 Power components3.6.2 Line power loss3.6.3 Line power fluctuation3.6.4 Power control3.6.5 Unit emergency power off3.7 Other features3.7.1 Internal network3.7.2 Earthquake resistance3.7.3 Secure Data Overwrite
4.1 Virtualization definition4.2 Abstraction layers for drive virtualization4.2.1 Array sites4.2.2 Arrays4.2.3 Ranks4.2.4 Extent pools4.2.5 Logical volumes4.2.6 Space-efficient volumes4.2.7 Allocation, deletion, and modification of LUNs and CKD volumes4.2.8 Logical subsystems4.2.9 Volume access4.2.10 Virtualization hierarchy summary4.3 Benefits of virtualization

5.1 Introduction to Copy Services5.2 FlashCopy and FlashCopy Space Efficient5.2.1 Basic concepts5.2.2 Benefits and use5.2.3 FlashCopy options5.2.4 FlashCopy SE-specific options5.2.5 Remote Pair FlashCopy (Preserve Mirror)5.2.6 Remote Pair FlashCopy with Multiple Target PPRC5.3 Remote Mirror and Copy5.3.1 Metro Mirror5.3.2 Global Copy5.3.3 Global Mirror5.3.4 Metro/Global Mirror5.3.5 Multiple Target PPRC5.3.6 Copy Services full support provided for thin provisioning enhancements in open environments5.3.7 z/OS Global Mirror5.3.8 z/OS Metro/Global Mirror5.3.9 Summary of Remote Mirror and Copy function characteristics5.3.10 Consistency group considerations5.3.11 GDPS on z/OS environments5.3.12 Tivoli Storage Productivity Center for Replication functions5.4 Resource groups for Copy Services
6.1 DS8870 hardware: Performance characteristics6.1.1 Vertical growth and scalability6.1.2 POWER7 and POWER7+6.1.3 The High-Performance Flash Enclosure6.1.4 DS8870 Switched Fibre Channel Arbitrated Loops6.1.5 Fibre Channel device adapter6.1.6 16 Gbps Fibre Channel host adapters6.2 Software performance: Synergy items6.2.1 Synergy with Power Systems6.2.2 Synergy with z Systems6.3 Performance considerations for disk drives6.4 DS8000 superior caching algorithms6.4.1 Sequential Adaptive Replacement Cache6.4.2 Adaptive Multi-stream Prefetching6.4.3 Intelligent Write Caching6.5 Performance considerations for logical configurations6.5.1 Workload characteristics6.5.2 Data placement in the DS80006.6 I/O Priority Manager6.6.1 Performance policies for open systems6.6.2 Performance policies for z Systems6.7 IBM Easy Tier6.7.1 Easy Tier generations6.8 Host performance and sizing considerations6.8.1 Performance and sizing considerations for open systems
7.1 Considerations before installation: Planning for growth7.1.1 Who should be involved7.1.2 What information is required7.2 Planning for the physical installation7.2.1 Delivery and staging area7.2.2 Floor type and loading7.2.3 Overhead cabling features7.2.4 Room space and service clearance7.2.5 Power requirements and operating environment7.2.6 Host interface and cables7.2.7 Host adapter Fibre Channel specifics for open environments7.2.8 FICON specifics on z/OS environment7.2.9 Preferred practice for host adapters7.2.10 WWNN and WWPN determination7.3 Network connectivity planning7.3.1 Hardware Management Console and network access7.3.2 IBM Tivoli Storage Productivity Center7.3.3 DS command-line interface7.3.4 Remote support connection (Internet SSL and embedded AOS)7.3.5 Remote power control7.3.6 Storage area network connection7.3.7 IBM Security Key Lifecycle Manager server for encryption7.3.8 Lightweight Directory Access Protocol server for single sign-on7.4 Remote Mirror and Copy connectivity7.5 Disk capacity considerations7.5.1 Disk sparing7.5.2 Disk capacity7.5.3 DS8000 flash drives (solid-state drives or SSDs): Considerations7.5.4 DS8000 flash drives: Considerations
8.1 Management Console overview8.1.1 Management Console (MC) hardware8.1.2 Private Ethernet networks8.2 Management Console software8.2.1 DS Management GUI8.2.2 DS command-line interface8.2.3 DS Open application programming interface8.2.4 RESTful application programming interface8.2.5 Web-based user interface8.3 Management Console activities8.3.1 Management Console planning tasks8.3.2 Planning for microcode upgrades8.3.3 Time synchronization8.3.4 Monitoring DS8870 with the Management Console8.3.5 Call home and remote support8.4 Management Console and IPv68.5 Management Console user management8.6 External Management Console8.6.1 Management Console redundancy benefits
9.1 IBM DS8870 licensed functions9.1.1 Licensing9.1.2 Licensing: Cost structure9.2 Activating licensed functions9.2.1 Obtaining DS8000 machine information and activating license keys9.2.2 Obtaining activation codes9.2.3 Applying activation codes by using the DS CLI9.3 Licensed scope considerations9.3.1 Why you have a choice9.3.2 Using a feature for which you are not licensed9.3.3 Changing the scope from FB to All9.3.4 Changing the scope from All to FB9.3.5 Applying an insufficient license feature key9.3.6 Calculating how much capacity is used for CKD or FB
10.1 Configuration worksheets10.2 User and role management10.3 Disk encryption10.4 Network security10.5 Configuration flow10.6 General storage configuration guidelines
11.1 Introduction11.2 DS8870 Storage Management GUI: Getting started11.2.1 Accessing the Storage Management GUI11.2.2 Storage Management GUI System Setup Wizard11.2.3 Managing and monitoring the storage system11.2.4 Storage Management help functions11.3 System configuration overview11.3.1 Security settings11.3.2 Easy Tier settings11.3.3 Advanced settings11.4 Logical configuration overview11.5 Logical configuration for fixed block volumes11.5.1 Configuration flow11.5.2 Creating FB pools11.5.3 Creating FB volumes11.5.4 Creating FB host attachments11.5.5 Assigning FB volumes11.6 Logical configuration for count key data volumes11.6.1 Configuration flow11.6.2 Creating CKD storage pools11.6.3 Creating CKD logical subsystems11.6.4 Creating CKD volumes11.6.5 Creating CKD parallel access volumes11.6.6 Setting the I/O port protocols for z Systems attachment11.7 Monitoring system health11.7.1 Hardware components: Status and attributes11.7.2 Monitoring system events11.7.3 Monitoring degraded hardware components11.8 Performance monitoring11.8.1 Performance statistics11.8.2 Working with customized performance graphs11.9 Fibre Channel error rates statistics11.10 Accessing the previous DS GUI
12.1 DS Command-Line Interface overview12.1.1 Supported operating systems for the DS CLI12.1.2 DS CLI version12.1.3 User accounts12.1.4 User management by using the DS CLI12.1.5 DS CLI profile12.1.6 Configuring DS CLI to use a second HMC12.1.7 Command structure12.1.8 Using the DS CLI application12.1.9 Return codes12.1.10 User assistance12.2 Configuring the I/O ports12.3 Configuring the DS8870 storage for fixed block volumes12.3.1 Disk classes12.3.2 Creating arrays12.3.3 Creating ranks12.3.4 Creating extent pools12.3.5 Creating FB volumes12.3.6 Creating volume groups12.3.7 Creating host connections12.3.8 Mapping open systems host disks to storage unit volumes12.4 Configuring DS8870 storage for CKD volumes12.4.1 Creating arrays12.4.2 Ranks and extent pool creation12.4.3 Logical control unit creation12.4.4 Creating CKD volumes12.4.5 Resource groups12.4.6 Performance I/O Priority Manager12.4.7 Easy Tier12.5 Metrics with DS CLI12.6 Private network security commands12.7 Copy Services commands
13.1 How new microcode is released13.2 Bundle installation13.3 Concurrent and non-concurrent updates13.4 Code updates13.5 Host adapter firmware updates13.6 Loading the code bundle13.7 Fast Path Concurrent Code Load13.8 Postinstallation activities13.9 Summary
14.1 SNMP implementation on the DS887014.1.1 Message Information Base (MIB) file14.1.2 Predefined SNMP trap requests14.2 SNMP notifications14.2.1 Serviceable event that uses specific trap 314.2.2 Copy Services event traps14.2.3 I/O Priority Manager SNMP14.2.4 Thin provisioning SNMP14.3 SNMP configuration14.3.1 SNMP preparation14.3.2 SNMP configuration with the HMC14.3.3 SNMP configuration with the DS CLI
15.1 Introduction to remote support15.2 IBM policies for remote support15.3 Remote support advantages15.4 Remote support call home15.4.1 Call home and heartbeat: Outbound15.4.2 Data offload: Outbound15.4.3 Outbound connection types15.5 Remote Support Access (inbound)15.5.1 Assist On-site15.5.2 DS8870 Embedded AOS15.5.3 Inbound VPN15.5.4 Support access management through the DS CLI15.6 Audit logging
16.1 Introducing DS8870 model conversion16.2 Model conversion overview16.2.1 Configuration considerations16.2.2 Hardware considerations16.3 Model conversion phases16.3.1 Planning16.3.2 Prerequisites16.3.3 Mechanical conversion16.3.4 Post conversion operations
A.1 SCSI reserves detection and removalA.2 Querying CKD path groupsA.3 z/OS Soft Fence
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Content preview from IBM DS8870 Architecture and Implementation (Release 7.5)

Concepts and architecture

This part of the book provides an overview of the IBM DS8870 concepts and architecture.

This part covers the following topics:

•Introduction to the IBM DS8870

•IBM DS8870 configurations

•DS8870 hardware components and architecture

•RAS on the IBM DS8870

•Virtualization concepts

•IBM DS8000 Copy Services overview

•Performance by design

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