
Using SANs and NAS
Description
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Content
- Intro
- Table of Contents
- Preface
- Boy, Was This Fun!
- What Is This Book For?
- Conventions Used in This Book
- Comments and Questions
- Acknowledgments
- What Are SANs and NAS?
- From SCSI to SANs
- What Is a SAN?
- Backup and Recovery: Before SANs
- Things Got Better
- Then They Got Worse
- Enter the SAN
- From NFS and SMB to NAS
- SMB/CIFS
- NFS
- NFS and CIFS: Before NAS
- Enter NAS
- SAN Versus NAS: A Summary
- Which Is Right for You?
- The Pros and Cons of NAS
- Pros and Cons of SANs
- It All Depends on Your Environment
- Fibre Channel Architecture
- Fibre Channel: An Ove30
- Why Fibre Channel?
- What Is Fibre Channel?
- Fibre Channel Ports
- Addressing
- Fibre Channel Topologies
- Point-to-Point
- Fabric
- Arbitrated Loop
- FC-AL Versus Fabric
- Arbitration
- Address selection
- Combining Fabric and Arbitrated Loop Topologies
- SAN Building Blocks
- Servers
- Host Bus Adapters (HBAs)
- Switches
- Hubs
- Hub Switches
- Routers and Bridges
- Disk Systems
- Cabling
- Software
- Fibre Channel and SANs: A Summary
- Managing a SAN
- The Different Uses for SANs
- Large, High-Performance Databases
- Filesystems with Many, Many Files
- Databases Requiring Raw Device Access
- Vendors That Don't (or Won't) Support NAS
- SAN Issues to Be Managed
- Multiple Paths to a Single Device
- Multiple Servers Accessing the Same Device
- Storage Devices with Changing Addresses
- Lack of Interoperability
- Access to Storage Resources
- Storage Virtualization
- Slicing
- Striping/RAID
- Implementations of Virtualization
- Controller-based implementation
- Software-based implementation
- Zoning
- Creating zones
- Hard zones
- Soft zones
- Broadcast zones
- Naming your zones
- LUN Masking
- Designing Your SAN for Availability
- Multipathing
- Automatic failover
- Load balancing
- Preventing thrashing
- Persistent Binding
- Ongoing Maintenance
- Managing (Storage Resource Management)
- Monitoring
- Maintenance
- Using SANs to Maximize Your Storage
- Online Storage Maximization
- Is This for Real?
- Offline Storage Maximization
- Online and Offline Storage Maximization Combined
- Truly Highly Available Systems
- Summary
- SAN Backup and Recovery
- Overview
- LAN-Free Backups
- How Does This Work?
- SCSI reserve/release
- Third-party queuing system
- Levels of Drive Sharing
- Restores
- Other Ways to Share Tape Drives
- NDMP libraries
- SCSI over IP
- Shared SCSI
- A Variation on the Theme
- What is a snapshot?
- Problem solved
- Problems with LAN-Free Backups
- Application impact
- Recovery speed
- No other way?
- Client-Free Backups
- How Client-Free Backups Work
- Backing Up the Backup Mirror
- Setup
- Back up the transaction logs
- Back up the datafiles
- Client-Free Recovery
- Recovering from complete destruction of the storage array
- Restore backup mirror from tape
- Recovering after a tape recovery or if you lose the primary disk set and not the backup mirror
- Restore primary disk set from the backup mirror
- Replay transaction logs
- Bring the database online
- Other Variations on the Theme
- Recovery of a snapshot
- A valid option
- Server-Free Backups
- Look, Ma, No Server
- Getting a static view of the data
- Logically mapping the disk to the filesystem
- Transferring the data directly from disk to tape
- Server-Free Restores
- Image-level server-free restores
- File-level server-free restores
- Advantages and Disadvantages
- LAN-Free, Client-Free, or Server-Free?
- NAS Architecture
- What's Wrong with Standard NFS and CIFS?
- Usability
- Manageability
- Performance
- Availability
- Scalability
- Enter Network Attached Storage
- NFS and CIFS Advances
- Advances in NFS
- CIFS Advances
- System Architecture Advances
- Streamlining the Process
- Making It Even Better
- High Availability and Scalability
- Low Total Cost of Ownership (TCO)
- Low Individual Component Cost
- Single Server for NFS, CIFS, and HTTP Services
- Ease of Maintenance
- Multiprotocol Servers
- Simplified Management
- Simplified Physical Architecture
- Ease of Use
- Managing NAS
- The Different Uses for NAS
- Data Consolidation
- Internet Applications
- Business Applications
- Installing a Filer
- Network Setup
- Operating System Installation
- Proprietary operating systems
- Linux-based operating systems
- Embedded Windows
- Configuring a Filer
- Configuration Interfaces
- Console
- Command-line interface (CLI)
- Remote shell: rsh
- Secure shell: ssh
- HTTP
- Configuration Files and Scripting
- Configuration Security
- Configuring the Storage
- Disk space allocation
- User space allocation: quotas
- Configuring the Network Interfaces
- Configuring the Network Protocols
- NFS
- CIFS
- HTTP
- FTP
- Emerging protocols
- Language support
- Configuring Authentication/Directory Services
- Local password databases
- Network Information Service (NIS)
- Microsoft
- User mapping
- Applications
- Home Directories
- Databases
- Data Migration
- Migration from Distributed Local Storage to NAS
- Migration methods and tools
- Migration issues
- Migration Between Filers
- Maintenance
- Hardware Failure
- Hardware Upgrades
- Onsite Spares
- Software Failure
- Software Upgrade
- Monitoring, Analyzing, and Reporting
- Monitoring: Built-in Tools
- Network Management Tools: Vendor-Supplied
- Network Management Tools: Generic
- Storage Resource Management (SRM)
- Performance Tuning
- Measuring Performance
- Measurement Tools
- NAS Backup and Recovery
- Snapshots and Mirroring
- Snapshots
- Server-to-Server Mirroring
- They Work Together
- Native Utilities
- NFS/CIFS
- Issues with NFS/CIFS Backups of Filers
- Reduced performance
- Unicode names
- CIFS ACLs
- Windows alternate data streams
- Push Agent Software
- NDMP
- The History of NDMP
- What Is NDMP?
- Definition of Terms
- NDMP configurations
- NDMP backups aren't portable
- Versions
- Using NDMP
- Robotic support
- Filer to library support
- Filer to server support
- Direct access restore support
- What About LAN-Free, Client-Free, and Server-Free Backup?
- Database Backup and Recovery
- Benefits Summary
- Disruptive Technologies
- DAFS: Direct Access File System
- VI: Virtual Interface
- InfiniBand
- iSCSI
- RAID Levels
- RAID 0
- RAID 1
- RAID 0+1
- RAID 1+0 (RAID 10)
- RAID 2
- RAID 3
- RAID 4 and RAID 5
- Index
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