- Notes, cautions, and warnings
- Introduction
- Revision history
- PowerFlex overview
- System requirements and product limits
- Architecture
- System
- MDM cluster
- Virtual IP addresses
- Storage definitions
- Storage pools
- Acceleration pools
- Data layout
- Volumes
- Naming PowerFlex objects
- NVMe over TCP overview
- PowerFlex file services
- Replication
- Replication peer systems
- Storage data replicator
- Journal
- Replication consistency group
- Replication pairs
- Recovery point objective
- Replication I/O flow
- Replication auto-provision
- Replication initial copy
- Activating or terminating a replication consistency group
- Pausing replication
- Using replicated volumes
- Accessing target volumes
- Setting up replication
- Dell APEX Block Storage
- Protection and load balancing
- Cache
- Networking requirements and limitations
- SDC connection monitoring
- SMART hardware monitoring
- Snapshots
- Performance
- Migrating volumes
- Implementing PowerFlex
- Additional functions
- Maintenance
- PowerFlex management
- Configure direct attached storage
Dell PowerFlex 4.6.x Technical Overview
Protection domains
A protection domain is a logical entity that consists of a group of SDSs that back up each other. Protection domains can be added during installation and modified post-installation.
Each SDS belongs to one protection domain, so each protection domain is a unique set of SDSs.
The maximum recommended number of nodes in a protection domain is 128. This enables the following:
- Optimal performance
- Reduction of theoretical mean time between failure issues
- Ability to sustain multiple failures in different protection domains
You can add protection domains during installation. In addition, you can modify protection domains post-installation with all the management clients.
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