Introduction to Active File Management |
Introduction to Active File Management (AFM) |
An overview of AFM and description of the concepts
- Cache and Home
- Communication between cache and home
- The backend protocol - NFS versus NSD
- Primary gateway
- Global namespace
- Caching modes
- Revalidation
- Cached and uncached files
- Synchronous or asynchronous operations
- Asynchronous delay
- Operations with AFM modes
- Fileset to the same home target
- Conversion of mode
- Internal AFM Directories
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Overview and concepts
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Features of AFM
- AFM NFSv4 support
- Data migration
- Fast create
- Support of linking GPFS dependent fileset
- Force flushing contents before Async Delay
- Parallel data transfers
- Parallel data transfer using multiple remote mounts
- Partial file caching
- Prefetch
- Peer snapshot -psnap
- Gateway node failure and recovery
- Cache eviction
- Operation with disconnected home
- Expiring a disconnected RO cache
- Viewing snapshots at home
- Failover
- Resync on SW filesets
- AFM resync version 2
- Using IBM Spectrum Protect for Space Management (HSM)
- Performing a planned maintenance by using the IW cache
- Handling IW cache disaster
- Using AFM with encryption
- Using mmbackup
- Disabling AFM
- Stop and start replication on a fileset
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Active File Management (AFM) features
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AFM limitations |
AFM limitations |
To know how to plan for AFM
- Requirements for UID and GID on the cache and home clusters
- Recommended worker1threads on cache cluster
- Inode limits to set at cache and home
- AFM gateway nodes
- Recommendations for AFM gateway node configuration
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Planning for AFM
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To know how to install AFM |
Installation of Active File Management (AFM) |
To know how to upgrade AFM |
Upgrading AFM and AFM DR |
To know how to configure AFM
- Configuration parameters for AFM
- Configuration changes in an existing AFM relationship
- Enabling AFM NFSv4
- Mapping IDs with the AFM Network File System version 4
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Configuring Active File Management
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To know how to tune for NFS backend |
Tuning for Kernel NFS backend on AFM and AFM DR |
To know how to monitor AFM filesets
- Fileset states for AFM
- Monitor with mmhealth
- Callback events for AFM
- Commands for monitoring AFM and AFM DR
- Monitor with mmperfmon
- Monitor prefetch
- Monitor with mmdiag
- Policies used for monitoring AFM
- Monitor using GUI
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Monitoring AFM and AFM DR
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To know how to administer AFM
- Creating an AFM relationship by using the NFS protocol
- Creating an AFM relationship by using GPFS protocol
- Checking synchronization status of an AFM fileset
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Administering AFM
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Common questions with their resolutions |
AFM issues |
To know how AFM is deployed effectively (Use cases) |
Active File Management (AFM) |
Commands |
mmafmctl command
mmafmlocal command
mmafmconfig command
mmpsnap command
mmchfileset command
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