Book description
This IBM® Redbooks® publication presents an overview of implementing N series SnapMirror Async technology, with step-by-step configuration examples and recommendations to assist the reader in designing an optimal SnapMirror solution.
There are several approaches to increasing data availability in the face of hardware, software, or even site failures. Backups provide a way to recover lost data from an archival medium (tape or disk). Redundant hardware technologies also help mitigate the damage caused by hardware issues or failures. Mirroring provides a third mechanism to facilitate data availability and minimize downtime.
SnapMirror offers a fast and flexible enterprise solution for mirroring or replicating data over local area, wide area, and Fibre Channel (FC) networks. SnapMirror can be a key component in implementing enterprise data protection strategies. If a disaster occurs at a source site, businesses can access mission-critical data from a replica on a remote N series storage system for uninterrupted operation.
Table of contents
- Front cover
- Notices
- Preface
- Chapter 1. Introduction to SnapMirror
-
Chapter 2. Overview of SnapMirror
- 2.1 The basics
- 2.2 Control files
- 2.3 Update process
- 2.4 Snapshot copy behavior in SnapMirror
- 2.5 Volume SnapMirror and qtree SnapMirror
- 2.6 SnapMirror volume replication
- 2.7 SnapMirror qtree replication
- 2.8 Support for volume types
- 2.9 Modes of SnapMirror
- 2.10 Configuration files
- 2.11 Multipath support
-
Chapter 3. Operational behaviors
- 3.1 Active-Active configuration
- 3.2 Disk geometry
- 3.3 Cascading
- 3.4 Logging
- 3.5 Data ONTAP versions and resync
- 3.6 Data change rate
- 3.7 SnapMirror and LUNS
- 3.8 Space guarantees
- 3.9 Update failures
- 3.10 Concurrent replication operations
- 3.11 NearStore personality
- 3.12 System-wide throttle
- 3.13 Dynamic throttle
- 3.14 Firewall configuration
- 3.15 Network compression configuration and operation configuration
- 3.16 Enabling and disabling network compression
- 3.17 Reporting the compression ratio
- 3.18 Compression ratio and data sets
- 3.19 64-bit aggregates
- 3.20 SnapMirror over Fibre Channel
-
Chapter 4. Guidelines for SnapMirror
- 4.1 Growing destination volume
- 4.2 SnapMirror window size, network latency, and compression
- 4.3 Replication network configuration
- 4.4 Replication frequency and Snapshot schedules
- 4.5 Destination Qtree names
- 4.6 Many-to-one configuration
- 4.7 Upgrading to flexible volumes
- 4.8 Unicode
- 4.9 High file count environments and Qtree SnapMirror
- 4.10 Read performance on a FlexVol volume SnapMirror destination
- 4.11 Data ONTAP upgrade and revert considerations
- 4.12 SnapMirror network compression considerations
- Chapter 5. Network-free seeding
- Chapter 6. SnapMirror management
- Chapter 7. Use of SnapMirror with other N series products
- Chapter 8. Tips for troubleshooting
- Chapter 9. Examples
- Related publications
- Back cover
Product information
- Title: N series SnapMirror Async Guide
- Author(s):
- Release date: October 2011
- Publisher(s): IBM Redbooks
- ISBN: 9780738436029
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