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by Marco Schwarz, Tom Provost, Steven Pemberton, Dirk Peitzmann, Jeff Lin, Roland T
IBM System Storage N series Hardware Guide
Front cover
Notices
Trademarks
Preface
The team who wrote this book
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Summary of changes
September 2012, Third Edition
Part 1 Introduction to N series hardware
Chapter 1. Introduction to IBM System Storage N series
1.1 Overview
1.2 IBM System Storage N series hardware
1.3 Software licensing structure
1.3.1 Mid-range and high-end
1.3.2 Entry-level
1.4 Data ONTAP 8 supported systems
Chapter 2. Entry-level systems
2.1 Overview
2.2 N3220
2.2.1 N3220 model 2857-A12
2.2.2 N3220 model 2857-A22
2.2.3 N3220 hardware
2.3 N3240
2.3.1 N3240 model 2857-A14
2.3.2 N3240 model 2857-A24
2.3.3 N3240 hardware
2.4 N32x0 common information
2.5 N3400
2.5.1 N3400 model 2859-A11
2.5.2 N3400 model 2859-A21
2.5.3 N3400 hardware
2.6 N3000 technical specifications at a glance
Chapter 3. Mid-range systems
3.1 Overview
3.1.1 Common features
3.1.2 Hardware summary
3.1.3 Functions and features common to all models
3.2 Hardware
3.2.1 N6210 and N6240 and N6240 hardware overview
3.2.2 IBM N62x0 MetroCluster / gateway models
3.2.3 IBM N62x0 series technical specifications
3.3 N62x0 technical specifications at a glance
Chapter 4. High-end systems
4.1 Overview
4.2 Hardware
4.2.1 Base components
4.2.2 IBM N series N7950T slot configuration rules
4.2.3 N7950T hot-pluggable FRUs
4.2.4 N7950T cooling architecture
4.2.5 System-level diagnostic procedures
4.2.6 N7950T supported back-end storage
4.2.7 MetroCluster, Gateway, and FlexCache
4.2.8 N7950T guidelines
4.2.9 N7950T SFP+ modules
4.3 N7950T technical specifications at a glance
Chapter 5. Expansion units
5.1 Shelf technology overview
5.2 Expansion unit EXN3000
5.2.1 Overview
5.2.2 Supported EXN3000 drives
5.2.3 Environmental and technical specification
5.3 Expansion unit EXN3500
5.3.1 Overview
5.3.2 Intermix support
5.3.3 Supported EXN3500 drives
5.3.4 Environmental and technical specification
5.4 Expansion unit EXN4000
5.4.1 Supported EXN4000 drives
5.4.2 Environmental and technical specification
5.5 Self-Encrypting Drive
5.5.1 SED at a glance
5.5.2 SED overview
5.5.3 Threats mitigated by self-encryption
5.5.4 Effect of self-encryption on Data ONTAP features
5.5.5 Mixing drive types
5.5.6 managementKey management
Chapter 6. Cabling expansions
6.1 EXN3000 and EXN3500 disk shelves cabling
6.1.1 Controller-to-shelf connection rules
6.1.2 SAS shelf interconnects
6.1.3 Top connections
6.1.4 Bottom connections
6.1.5 Verifying SAS connections
6.1.6 Connecting the optional ACP cables
6.2 EXN4000 disk shelves cabling
6.2.1 Non-multipath Fibre Channel cabling
6.2.2 Multipath Fibre Channel cabling
6.3 Multipath High-Availability cabling
Chapter 7. Highly Available controller pairs
7.1 HA pair overview
7.1.1 Benefits of HA pairs
7.1.2 Characteristics of nodes in an HA pair
7.1.3 Preferred practices for deploying an HA pair
7.1.4 Comparison of HA pair types
7.2 HA pair types and requirements
7.2.1 Standard HA pairs
7.2.2 Mirrored HA pairs
7.2.3 Stretched MetroCluster
7.2.4 Fabric-attached MetroCluster
7.3 Configuring the HA pair
7.3.1 Configuration variations for standard HA pair configurations
7.3.2 Preferred practices for HA pair configurations
7.3.3 Enabling licenses on the HA pair configuration
7.3.4 Configuring Interface Groups (VIFs)
7.3.5 Configuring interfaces for takeover
7.3.6 Setting options and parameters
7.3.7 Testing takeover and giveback
7.3.8 Eliminating single points of failure with HA pair configurations
7.4 Managing an HA pair configuration
7.4.1 Managing an HA pair configuration
7.4.2 Halting a node without takeover
7.4.3 Basic HA pair configuration management
7.4.4 HA pair configuration failover basic operations
7.4.5 Connectivity during failover
Chapter 8. MetroCluster
8.1 Overview of MetroCluster
8.2 Business continuity solutions
8.3 Stretch MetroCluster
8.3.1 Planning Stretch MetroCluster configurations
8.3.2 Cabling Stretch MetroClusters
8.4 Fabric Attached MetroCluster
8.4.1 Planning Fabric MetroCluster configurations
8.4.2 Cabling Fabric MetroClusters
8.5 Synchronous mirroring with SyncMirror
8.5.1 SyncMirror overview
8.5.2 SyncMirror without MetroCluster
8.6 MetroCluster zoning and TI zones
8.7 Failure scenarios
8.7.1 MetroCluster host failure
8.7.2 N series and expansion unit failure
8.7.3 MetroCluster interconnect failure
8.7.4 MetroCluster site failure
8.7.5 MetroCluster site recovery
Chapter 9. FibreBridge 6500N
9.1 Description
9.2 Architecture
9.3 Administration and management
Chapter 10. Data protection with RAID Double Parity
10.1 Background
10.2 Why use RAID-DP
10.2.1 Single-parity RAID using larger disks
10.2.2 Advantages of RAID-DP data protection
10.3 RAID-DP overview
10.3.1 Protection levels with RAID-DP
10.3.2 Larger versus smaller RAID groups
10.4 RAID-DP and double parity
10.4.1 Internal structure of RAID-DP
10.4.2 RAID 4 horizontal row parity
10.4.3 Adding RAID-DP double-parity stripes
10.4.4 RAID-DP reconstruction
10.4.5 Protection levels with RAID-DP
10.5 Hot spare disks
Chapter 11. Core technologies
11.1 Write Anywhere File Layout (WALF)
11.2 Disk structure
11.3 NVRAM and system memory
11.4 Intelligent caching of write requests
11.4.1 Journaling write requests
11.4.2 NVRAM operation
11.5 N series read caching techniques
11.5.1 Introduction of read caching
11.5.2 Read caching in system memory
Chapter 12. Flash Cache
12.1 About Flash Cache
12.2 Flash Cache module
12.3 How Flash Cache works
12.3.1 Data ONTAP disk read operation
12.3.2 Data ONTAP clearing space in the system memory for more data
12.3.3 Saving useful data in Flash Cache
12.3.4 Reading data from Flash Cache
Chapter 13. Disk sanitization
13.1 Data ONTAP disk sanitization
13.2 Data confidentiality
13.2.1 Background
13.2.2 Data erasure and standards compliance
13.2.3 Technology drivers
13.2.4 Costs and risks
13.3 Data ONTAP sanitization operation
13.4 Disk Sanitization with encrypted disks
Chapter 14. Designing an N series solution
14.1 Primary issues that affect planning
14.1.1 IBM Capacity Magic
14.1.2 IBM Disk Magic
14.2 Performance and throughput
14.2.1 Capacity requirements
14.2.2 Other effects of Snapshot
14.2.3 Capacity overhead versus performance
14.2.4 Processor utilization
14.2.5 Effects of optional features
14.2.6 Future expansion
14.2.7 Application considerations
14.2.8 Backup servers
14.2.9 Backup and recovery
14.2.10 Resiliency to failure
14.3 Summary
Part 2 Installation and administration
Chapter 15. Preparation and installation
15.1 Installation prerequisites
15.1.1 Pre-installation checklist
15.1.2 Before arriving on site
15.2 Configuration worksheet
15.3 Initial hardware setup
15.4 Troubleshooting if the system does not boot
Chapter 16. Basic N series administration
16.1 Administration methods
16.1.1 FilerView interface
16.1.2 Command-line interface
16.1.3 N series System Manager
16.1.4 OnCommand
16.2 Starting, stopping, and rebooting the storage system
16.2.1 Starting the IBM System Storage N series storage system
16.2.2 Stopping the IBM System Storage N series storage system
16.2.3 Rebooting the system
Part 3 Client hardware integration
Chapter 17. Host Utilities Kits
17.1 What Host Utilities Kits are
17.2 The components of a Host Utilities Kit
17.2.1 What is included in the Host Utilities Kit
17.2.2 Current supported operating environments
17.3 Functions provided by Host Utilities
17.3.1 Host configuration
17.3.2 IBM N series controller and LUN configuration
17.4 Windows installation example
17.4.1 Installing and configuring Host Utilities
17.4.2 Preparation
17.4.3 Running the Host Utilities installation program
17.4.4 Host configuration settings
17.4.5 Overview of settings used by the Host Utilities
17.5 Setting up LUNs
17.5.1 LUN overview
17.5.2 Initiator group overview
17.5.3 About mapping LUNs for Windows clusters
17.5.4 Adding iSCSI targets
17.5.5 Accessing LUNs on hosts
Chapter 18. Boot from SAN
18.1 Overview
18.2 Configure SAN boot for IBM System x servers
18.2.1 Configuration limits and preferred configurations
18.2.2 Preferred practices
18.2.3 Basics of the boot process
18.2.4 Configuring SAN booting before installing Windows or Linux systems
18.2.5 Windows 2003 Enterprise SP2 installation
18.2.6 Windows 2008 Enterprise installation
18.2.7 Red Hat Enterprise Linux 5.2 installation
18.3 Boot from SAN and other protocols
18.3.1 Boot from iSCSI SAN
18.3.2 Boot from FCoE
Chapter 19. Host multipathing
19.1 Overview
19.2 Multipathing software options
19.2.1 Third-party multipathing solution
19.2.2 Native multipathing solution
19.2.3 Asymmetric Logical Unit Access (ALUA)
19.2.4 Why ALUA?
Chapter 20. Designing for nondisruptive upgrades
20.1 System NDU
20.1.1 Types of system NDU
20.1.2 Supported Data ONTAP upgrades
20.1.3 System NDU hardware requirements
20.1.4 System NDU software requirements
20.1.5 Prerequisites for a system NDU
20.1.6 Steps for major version upgrades NDU in NAS and SAN environments
20.1.7 System commands compatibility
20.2 Shelf firmware NDU
20.2.1 Types of shelf controller module firmware NDUs supported
20.2.2 Upgrading the shelf firmware
20.2.3 Upgrading the AT-FCX shelf firmware on live systems
20.2.4 Upgrading the AT-FCX shelf firmware during system reboot
20.3 Disk firmware NDU
20.3.1 Overview of disk firmware NDU
20.3.2 Upgrading the disk firmware non-disruptively
20.4 ACP firmware NDU
20.4.1 Upgrading ACP firmware non-disruptively
20.4.2 Upgrading ACP firmware manually
20.5 RLM firmware NDU
Chapter 21. Hardware and software upgrades
21.1 Hardware upgrades
21.1.1 Connecting a new disk shelf
21.1.2 Adding a PCI adapter
21.1.3 Upgrading a storage controller head
21.2 Software upgrades
21.2.1 Upgrading to Data ONTAP 7.3
21.2.2 Upgrading to Data ONTAP 8.1
Part 5 Appendixes
Appendix A. Getting started
Preinstallation planning
Start with the hardware
Power on N series
Data ONTAP update
Obtaining the Data ONTAP software from the IBM NAS website
Installing Data ONTAP system files
Downloading Data ONTAP to the storage system
Setting up the network using console
Changing the IP address
Setting up the DNS
Appendix B. Operating environment
N3000 entry-level systems
N6000 mid-range systems
N7000 high-end systems
N series expansion shelves
Appendix C. Useful resources
N series to NetApp model reference
Interoperability matrix
Related publications
IBM Redbooks
Other publications
Online resources
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